CHANGELOG for Apollo Server v0, v1, v2, and v3

This file describes the history of Apollo Server up to v3. The version headers in this history reflect the versions of Apollo Server itself. Versions of other packages (e.g., those which are not actual HTTP integrations; packages not prefixed with "apollo-server", or just supporting packages) may use different versions.

Starting with Apollo Server v4, this single monorepo CHANGELOG file is no longer maintained; see the CHANGELOG.md file in each package directory (such as packages/server/CHANGELOG.md) instead.

v3.10.3

apollo-server-core: Fix memory leak in usage reporting plugin. Issue #6983 [PR #6999](https://github.com/apollographql/apollo-server/[Issue #6983](#6983)

v3.10.2

apollo-server-fastify: Use return reply.send in handlers to match the pattern encouraged by Fastify 4 (although apollo-server-fastify@3 only works with Fastify 3). PR #6798
apollo-datasource-rest@3.7.0: Add option memoizeGetRequests to disable GET cache PR #6650 and PR #6834

v3.10.1

⚠️ SECURITY: The default landing page contained HTML to display a sample curl command which is made visible if the full landing page bundle could not be fetched from Apollo's CDN. The server's URL is directly interpolated into this command inside the browser from window.location.href. On some older browsers such as IE11, this value is not URI-encoded. On such browsers, opening a malicious URL pointing at an Apollo Router could cause execution of attacker-controlled JavaScript. In this release, the fallback page does not display a curl command. More details are available at the security advisory.
Improve error message when both a graph ref and a graph variant are specified. PR #6709
Fix the TypeScript declaration of the fieldLevelInstrumentation option to ApolloServerPluginUsageReporting to show that the function may return a number in addition to a boolean. This now matches the implementation and docs. PR #6763

v3.10.0

Add document, variables, headers as an option in the ApolloServerPluginLandingPageLocalDefault plugins. The embedded version of Apollo Sandbox can now use these options as an initial state. PR #6628
Add generateCacheKey to ApolloServerPluginResponseCache to allow for custom cache keys. PR #6655

v3.9.0

⚠️ SECURITY apollo-server-core: The default configuration of Apollo Server is vulnerable to denial of service attacks via memory exhaustion. If you do not currently specify the cache option to new ApolloServer(), we strongly recommend you specify cache: 'bounded', which replaces the default in-memory unbounded cache with a 30MB in-memory cache, or disable automatic persisted queries with persistedQueries: false. Apollo Server now logs a warning in production if you do not configure the cache or disable APQs. See the docs for more details.
The apollo-server-caching package is no longer published. The TypeScript types KeyValueCache and KeyValueCacheSetOptions and the classes PrefixingKeyValueCache and InMemoryLRUCache can be imported from @apollo/utils.keyvaluecache instead. The first three exports are identical; InMemoryLRUCache is based on lru-cache v7 instead of v6, and no longer supports creating unbounded caches (which was the default behavior for apollo-server-caching's InMemoryLRUCache). PR #6522
The apollo-server-cache-redis and apollo-server-cache-memcached packages are no longer published (though previous versions continue to work). We recommend that users of these packages migrate to @apollo/utils.keyvadapter, which lets you connect to Redis, Memcached, or any other backend supported by the Keyv project. See the new cache backend docs for more details. PR #6541
Avoid unhandled rejection errors if the end hook from a parsingDidStart plugin method rejects. Issue #6567 PR #6559

v3.8.2

apollo-server-core: Fix usage reporting plugin "willResolveField called after stopTiming!" error caused by a race condition related to null bubbling. Issue #4472 PR #6398

v3.8.1

This is a patch release strictly for republishing over what appears to be a hiccup in NPMs service. Issue #6469

v3.8.0

Add embed as an option in the ApolloServerPluginLandingPageLocalDefault and ApolloServerPluginLandingPageProductionDefault plugins. If you pass the embed option to ApolloServerPluginLandingPageLocalDefault, the Apollo Studio Sandbox will be embedded on your Apollo Server endpoint. If you pass the embed option to ApolloServerPluginLandingPageProductionDefault, the Apollo Studio embedded Explorer will be embedded on your Apollo Server endpoint. In both cases, users can use the embedded app to run GraphQL operations without any special CORS setup.
Add a few missing dependencies to packages. PR #6393
Factor out some usage reporting code to a shared package in the apollo-utils repository. Should not be a visible change. PR #6449

v3.7.0

⚠️ SECURITY apollo-server-core: Apollo Server now includes protection against CSRF and XS-Search attacks. We highly recommend enabling this feature by passing csrfPrevention: true to new ApolloServer(). If you rely on the ability to execute GraphQL operations via HTTP GET requests using a client other than Apollo Client Web, Apollo iOS, or Apollo Kotlin (formerly Apollo Android), you may need to first change the configuration of that client. See the CSRF prevention docs for more details. This vulnerability was reported by Jeffrey Hofmann; the feature was designed with advice from Luca Carettoni of Doyensec.

v3.6.8

apollo-server-fastify: This package now depends on the @fastify/accepts and @fastify/cors packages rather than their older deprecated names fastify-accepts and fastify-cors. There is no behavior change (except that you will no longer see deprecation messages). PR #6366
apollo-server-types: The Logger TypeScript interface is now re-exported from the new @apollo/utils.logger package instead of defined directly in this package; other packages import it from the new package. There should be no observable change. PR #6229

v3.6.7

apollo-server-core: Update @apollographql/apollo-tools dependency to the latest version which now properly lists its peer dependencies. This fixes a problem with using Yarn3 PnP PR #6273

v3.6.6

⚠️ SECURITY apollo-server-core: Apollo Server 3.4.0 introduced a new documentStore constructor option (replacing the experimental_approximateDocumentStoreMiB option) which allows you to customize an internal cache used by ApolloServer to memoize the results of parsing and validating GraphQL operations. When this option was combined with the gateway option, it was possible for Apollo Server to attempt to execute invalid GraphQL operations. Specifically, if a server processed an operation and then its schema was updated with a change that made that operation no longer valid, the server could still attempt to execute the operation again without re-validating it against the new schema. The problem only lasts until the server is restarted. This release changes the semantics of the documentStore option so that a different key prefix is used each time the schema is updated. (As a side effect, you no longer have to be careful to avoid sharing a documentStore between multiple ApolloServer objects.) This update is highly recommended for any users that specify both documentStore and gateway in new ApolloServer().

v3.6.5

apollo-server-plugin-usage-reporting: Stop distributing unnecessary generated/reports.proto file. Count executable operations. PR #6239

v3.6.4

apollo-server-core: Fixes a regression in v3.6.0 where usage reporting would never send traces for unexecutable operations (parse errors, validation errors, and unknown operation name errors). While "traces" for these operations won't actually contain an execution tree, they can contain interesting errors. Issue #6193 PR #6194

v3.6.3

apollo-server-core: The inline trace plugin will now include the full query plan and subgraph traces if manually installed in an Apollo Gateway. (Previously, you technically could install this plugin in a Gateway but it would not have any real trace data.) This is recommended for development use only and not in production servers. PR #6017
apollo-server-core: The default landing page plugins now take an includeCookies option which allows you to specify that Explorer should send cookies to your server. PR #6014
apollo-server-core: Apollo Server has a heuristic added in v2.23.0 and improved in v3.1.0 which tries to detect execution errors that come from the graphql-js variable value validation phase and report them with an extensions.code of BAD_USER_INPUT rather than INTERNAL_SERVER_ERROR. In this release, the heuristic is improved to include some cases including variables that are non-null lists. PR #6066

v3.6.2

⚠️ SECURITY apollo-server-env: Update dependency on node-fetch to require v2.6.7 rather than v2.6.1. This includes the fix to CVE-2022-0235, a vulnerability where credentials sent along with a request could be sent to a different origin if the fetched URL responds with an attacker-controlled HTTP redirect. This is the default fetcher used by apollo-datasource-rest, usage reporting, schema reporting, and @apollo/gateway in versions prior to v0.46.0. We do not believe that the way that this is used by usage reporting or schema reporting is vulnerable to the exploit, but if you use apollo-datasource-rest in such a way that the servers you talk to might serve a surprising redirect, this upgrade would be helpful. Note that to ensure you're using the appropriate version of apollo-server-env with apollo-datasource-rest, you need to be using v3.5.1 of that package. (We plan to separate the release process of apollo-datasource-rest from Apollo Server soon so that it can have a more reasonable changelog.) If upgrading to this version is challenging, you can also work around this by ensuring that node-fetch@2.6.7 is the version used in your project, or by specifying a fetcher explicitly to your older Gateway, REST datasource, etc.
apollo-server-core: The typeDefs, resolvers, and parseOptions constructor arguments are passed directly through to makeExecutableSchema from @graphql-tools/schema if provided. Now their TypeScript type definitions come directly from that package so that any types accepted by that package can be provided. PR #5978
apollo-server-fastify: Drop dependency on fast-json-stringify. PR #5988
apollo-server-azure-functions: Update TypeScript types package @azure/functions from v1 to v3 and change it to a dev dependency. (We were advised to change it to a dev dependency by the authors of the package; if this turns out to be problematic we can revert this part of the change. They also do not believe this is a backwards-incompatible change despite the major version bump; this package does a major version bump when the underlying Azure Functions runtime has a major version bump.) PR #5919

v3.6.1

Correctly remove dependency on apollo-graphql as intended in v3.6.0. Issue #5981 PR #5981

v3.6.0

apollo-server-core: Studio usage reporting now reports "referenced operations" for fields in addition to "field executions", which can be seen on the Studio Fields page. This new statistic provides visibility into uses of fields that are not executed. It is also more efficient to generate and (for Apollo Gateways) does not require subgraphs to support federated tracing. Additionally, the new fieldLevelInstrumentation option to ApolloServerPluginUsageReporting allows you to disable field-level tracing on a per-operation basis, and to report weights for operations to allow for estimates of the field execution count even when not all operations are instrumented. Note that the semantics of the requestContext.metrics.captureTraces field have changed. See the Studio Fields page docs and the fieldLevelInstrumentation docs for more details. Issue #5708 PR #5956 PR #5963
apollo-server-core: Usage reporting no longer sends a "client reference ID" to Apollo Studio (along with the client name and client version). This little-used feature has not been documented since 2019 and is currently entirely ignored by Apollo Studio. This is technically incompatible as the interface ClientInfo no longer has the field clientReferenceId; if you were one of the few users who explicitly set this field and you get a TypeScript compilation failure upon upgrading to v3.6.0, just stop using the field. PR #5890
apollo-server-core: Remove dependency on apollo-graphql package (by inlining the code which generates usage reporting signatures). That package has not yet been published with a graphql@16 peer dependency, so Apollo Server v3.5 did not fully support graphql@16 without overriding peer dependencies. Issue #5941 PR #5955

v3.5.0

Apollo Server now supports graphql@16. (There is a very small backwards incompatibility: ApolloError.originalError can no longer be null, matching the type of GraphQLError.originalError. Use undefined instead. If this causes challenges, let us know and we can try to adapt.) PR #5857 - apollo-server-core: Fix build error when building with @rollup/plugin-commonjs. PR #5797
apollo-server-plugin-response-cache: Add missing dependency on apollo-server-types (broken since v3.0.0). Issue #5804 PR #5816
apollo-server-core: The default landing page plugins now take document, variables, and headers arguments which fill in default values if you click through to Explorer. PR #5711
apollo-server-core: Support for HTTP request batching can now be disabled by passing allowBatchedHttpRequests: false to new ApolloServer. PR #5778 Issue #5686

v3.4.1

⚠️ SECURITY apollo-server-core: Update default version of the GraphQL Playground React app loaded from the CDN to be @apollographql/graphql-playground-react@1.7.42. This patches an XSS vulnerability. Note that if you are pinning the Playground React app version in your app with new ApolloServer({plugins: [ApolloServerPluginLandingPageGraphQLPlayground({version: 'some version'})]}), you will need to update the specified version to 1.7.42 or later to avoid this vulnerability. If you do not explicitly enable GraphQL Playground via the ApolloServerPluginLandingPageGraphQLPlayground plugin, this vulnerability does not affect you. See advisory GHSA-qm7x-rc44-rrqw for more details.

v3.4.0

apollo-server-core: You can now specify your own DocumentStore (a KeyValueStore<DocumentNode>) for Apollo Server's cache of parsed and validated GraphQL operation abstract syntax trees via the new documentStore constructor option. This replaces the experimental_approximateDocumentStoreMiB option. You can replace new ApolloServer({experimental_approximateDocumentStoreMiB: approximateDocumentStoreMiB, ...moreOptions}) with:
```
import { InMemoryLRUCache } from 'apollo-server-caching';
import type { DocumentNode } from 'graphql';
new ApolloServer({
  documentStore: new InMemoryLRUCache<DocumentNode>({
    maxSize: Math.pow(2, 20) * approximateDocumentStoreMiB,
    sizeCalculator: InMemoryLRUCache.jsonBytesSizeCalculator,
  }),
  ...moreOptions,
})
```
PR #5644 Issue #5634
apollo-server-core: For ease of testing, you can specify the node environment via new ApolloServer({nodeEnv}) in addition to via the NODE_ENV environment variable. The environment variable is now only read during server startup (and in some error cases) rather than on every request. PR #5657
apollo-server-koa: The peer dependency on koa (added in v3.0.0) should be a ^ range dependency rather than depending on exactly one version, and it should not be automatically increased when new versions of koa are released. PR #5759
apollo-server-fastify: Export ApolloServerFastifyConfig and FastifyContext TypeScript types. PR #5743
apollo-server-core: Only generate the schema hash once on startup rather than twice. PR #5757
apollo-datasource-rest@3.3.0: When choosing whether or not to parse a response as JSON, treat any content-type ending in +json as JSON rather than just application/hal+json (in addition to application/json). PR #5737
apollo-server: You can now configure the health check URL path with the healthCheckPath constructor option, or disable serving health checks by passing null for this option. (This option is specific to the batteries-included apollo-server package; if you're using a framework integration package and want to serve a health check at a different path, just use your web framework directly.) PR #5270 Issue #3577
apollo-server-azure-functions: This package now supports health checks like all of the other supported Apollo Server packages; they are on by default and can be customized with disableHealthCheck and onHealthCheck. [PR #5003](https:// github.com//pull/5003) Issue #4925
Tests are no longer distributed inside published npm modules. PR #5799 Issue #5781

v3.3.0

apollo-server-core: Error handling when a serverWillStop callback invoked by server.stop() (or gateway.stop()) throws is now consistent: the original call to server.stop() throws the error, and any concurrent and subsequent calls to server.stop() throw the same error. Prior to Apollo Server v2.22.0, the original call threw the error and the behavior of concurrent and subsequent calls was undefined (in practice, it would call shutdown handlers a second time). Apollo Server v2.22.0 intended to put these semantics into place where all three kinds of calls would throw, but due to bugs, the original call would return without error and concurrent calls would hang. (Subsequent calls would correctly throw the error.) In addition, errors thrown by the drainServer hook introduced in Apollo Server v3.2.0 are now handled in the same way. Issue #5649 PR #5653

v3.2.0

If you're using apollo-server-express or another framework integration, we highly recommend that you enable the new graceful shutdown feature after upgrading to 3.2.0. See the docs for ApolloServerPluginDrainHttpServer or the basic usage for your integration of choice.

apollo-server-core: Previously, only the batteries-included apollo-server package supported a graceful shutdown. Now the integrations support it as well, if you tell your ApolloServer which HTTP server to drain with the new ApolloServerPluginDrainHttpServer plugin. This plugin implements a new drainServer plugin hook. For apollo-server-hapi you can use ApolloServerPluginStopHapiServer instead. PR #5635
apollo-server-core: Fix experimental_approximateDocumentStoreMiB option, which seems to have never worked before. PR #5629
apollo-server-core: Only register SIGINT and SIGTERM handlers once the server successfully starts up; trying to call stop on a server that hasn't successfully started had undefined behavior. By default, don't register the handlers in serverless integrations, which don't have the same lifecycle as non-serverless integrations (eg, there's no explicit start call); you can still explicitly set stopOnTerminationSignals to override this default. PR #5639

v3.1.2

apollo-server-core: Update versions of @graphql-tools/schema and @graphql-tools/utils from v7 to v8. While there is no change in behavior in these versions, a recently-released version of @graphql-tools/mock depends on them, and so without this change, you typically end up with two copies of them installed.

v3.1.1

apollo-server-env: Update Headers.values() type to match what node-fetch actually does and what the Fetch spec says it should be, and what @types/node-fetch finally gets correct. PR #5537

v3.1.0

apollo-server-core: If a client does not provide a value or provides null for a variable declared to be non-null, this is now reported as an error with an extensions.code of BAD_USER_INPUT rather than INTERNAL_SERVER_ERROR. (This is similar to a change we made in v2.23.0 for variables that are sent as the wrong type.) PR #5508 Issue #5353
apollo-server-core/apollo-server-plugin-base: Add support for schemaDidLoadOrUpdate event hooks, to be specified by the serverWillStart event hook. Plugins listening for this event will receive the API schema (and core schema for gateways) when the server's schema is initially loaded and when the server's schema is updated. For more information about this plugin event, see the plugin event reference documentation. PR #5187
apollo-server-core: Add support for schema reporting when using Apollo Gateway. At the time of this package's release, Apollo Studio does not yet support schema reporting from gateways, so you should not use this feature yet for gateways (unless instructed otherwise by Apollo staff or by the Studio docs). If you do enable schema reporting for a gateway, the version of @apollo/gateway must be at least 0.35.0 , or else start() will error. PR #5187
apollo-server-core: Support gateways without executors, to help with mocking gateways. Note that if you have a custom GatewayInterface implementation, Apollo Server will now honor the executor returned from load and will ignore the executor method on the gateway itself. See the PR for details. PR #5539
apollo-server-plugin-response-cache, apollo-server-plugin-operation-registry: Change how the default export from the package is set up to fix errors with some build tools. PR #5542

v3.0.2

apollo-server-types: TypeScript typings for info.cacheControl are now added to GraphQLResolveInfo as part of apollo-server-types rather than a nested file in apollo-server-core, and the field now has a named type, ResolveInfoCacheControl. PR #5512
apollo-server-micro: Like the other framework integrations, only serve landing pages from the GraphQL path (/graphql by default, configurable via the path option to createHandler). PR #5516
apollo-server-env: Remove polyfills of Object.values, Object.entries, and util.promisify which were only required for Node 6 support. Remove ValueOrPromise and WithRequired TypeScript types that are also provided by apollo-server-types. PR #5515

v3.0.1

apollo-server-core: The default maxAge (which defaults to 0) for a field should only be applied if no dynamic cache control hint is set. Specifically, if you call the (new in 3.0.0) function info.cacheControl.cacheHint.restrict({ maxAge: 60 }), it should set maxAge to 60 even if the default max age is lower. (This bug fix is the behavior that was intended for 3.0.0, and primarily affects the behavior of functions added in Apollo Server 3. This does mean that checking info.cacheControl.cacheHint now only shows explicitly-set maxAge and not the default, but this seems like it will be helpful since it lets you differentiate between the two similar circumstances.) PR #5492
apollo-server-lambda: Fix TypeScript types for context function. (In 3.0.0, the TS types for the context function were accidentally inherited from apollo-server-express instead of using the correct Lambda-specific types). PR #5481
apollo-server-lambda, apollo-server-cloud-functions: Make the default URL path for handling GraphQL be / (ie, handle all requests). This is similar to how these packages work in Apollo Server 2. After this change, apollo-server and the serverless integrations have a default URL path of / (or ignore the path entirely, in the case of apollo-server-azure-functions), and the framework integrations have a default URL path of /graphql. This is a backwards-incompatible change from 3.0.1 but minimizes the changes from Apollo Server 2 (and this AS3 change was not intended or documented). PR #5497 Issue #5462

v3.0.0

BREAKING CHANGES

Apollo Server 3 contains quite a few breaking changes. Read our migration guide for more details on how to update your app.

Bumped dependencies

The minimum versions of these dependencies have been bumped to provide an improved foundation for the development of future features.

Dropped support for Node.js v6, v8 and v10. Apollo Server 3.x is being compiled to ES2020, which maps to Node.js 12+.
- Note also that we only test Apollo Server on even-numbered versions of Node.js, and we only aim to support Node.js versions that are under long-term support from the Node.js Foundation.
Dropped support for versions of the graphql library prior to 15.3.0.
The mocks option of the ApolloServer constructor now uses @graphql-tools/mock v7 instead of graphql-tools v4, which causes some breaking changes.
- For example, mock functions no longer receive arguments and cannot return Promises.
- Note that some parts of the v7 migration guide suggest using the resolvers argument to addMocksToSchema. Apollo Server does not support this option, but you can call addMocksToSchema yourself and pass the result to the schema option of the ApolloServer constructor.

Removed functionality

Certain undersupported and underused Apollo Server features have been removed in favor of current or future methods for achieving similar functionality. Many of these features can be manually re-enabled, as listed below.

Dropped built-in partial support for subscriptions via the subscriptions-transport-ws package.
- This integration did not support many Apollo Server features, and subscriptions-transport-ws has not been actively maintained.
- To re-enable subscriptions in Apollo Server 3 as they're supported in v2, see the migration guide.
- We hope to provide more deeply integrated subscription support in a future release.
Dropped built-in support for file uploads via the graphql-upload package.
- To re-enable file uploads in Apollo Server 3 as they're supported in v2, see the migration guide.
Dropped support for the graphql-extensions API (e.g., GraphQLExtensions, extensions) in favor of the Apollo Server plugins API.
Dropped support for passing the schemaDirectives option to the ApolloServer constructor.
- This option was passed directly to the graphql-tools function makeExecutableSchema. To continue using it, you can import makeExecutableSchema from @graphql-tools/schema and call it yourself:
```
new ApolloServer({
  schema: makeExecutableSchema({
    typeDefs,
    resolvers,
    schemaDirectives
  })
})
```
  Note that graphql-tools calls this feature "legacy" schema directives, and you might want to consider the newer schemaTransforms option instead.
Removed the deprecated ApolloServer.schema field, which never worked with federated gateways.
- To extract your schema from your server, you can make a plugin with serverWillStart or register onSchemaChange on your gateway.
apollo-datasource-rest: We no longer officially support overriding the baseURL property with a getter, because TypeScript 4 does not allow you to do so.
Removed the automatic addition of the @cacheControl directive to schemas.
- This directive was added in some circumstances but not in others, which caused confusion.
- If you use @cacheControl, you can define it in your schema as shown in the docs.
Removed the tracing option passed to the ApolloServer constructor. The corresponding apollo-tracing package has been deprecated and is no longer being published.
- This package implemented an inefficient JSON format for execution traces returned via the tracing GraphQL response extension. This format was only consumed by the deprecated engineproxy and GraphQL Playground.
- If you rely on this trace format, the old version of apollo-tracing should still work:
```
new ApolloServer({
  plugins: [
    require('apollo-tracing').plugin()
  ]
});
```
Removed a redundant mechanism for applying extensions to an ApolloError.
- Applied extensions are now available only on error.extensions, and are not also available on error itself.
- For details, see #5294.
- Relatedly, the ForbiddenError and AuthenticationError constructors now allow you to pass additional extensions.
Removed the cacheControl option passed to the ApolloServer constructor.
- By default, Apollo Server continues to calculate an overall cache policy for each operation and sets the Cache-Control HTTP header. However, this is now implemented directly inside apollo-server-core instead of inside a separate apollo-cache-control package (this package has been deprecated and is no longer being published).
- Setting cache control options like defaultMaxAge is now done via the newly exported ApolloServerPluginCacheControl plugin, instead of as a top-level constructor option. This follows the same pattern as other built-in plugins like usage reporting.
- The CacheHint and CacheScope types are now exported from apollo-server-types. The info.cacheControl.cacheHint object now has additional methods (replace, restrict, and policyIfCacheable), and its fields update when those methods or setCacheHint are called. These methods also exist on requestContext.overallCachePolicy, which is always defined and which should not be overwritten (use replace instead). There is also a new function info.cacheControl.cacheHintFromType available.
- @cacheControl directives on type extensions are no longer ignored. Fields returning union types are now treated similarly to fields returning object and interface types (@cacheControl directives on the type are honored, the default maxAge is applied to them).
- New feature: @cacheControl(inheritMaxAge: true) when applied to a composite type or a field returning a composite type means that the default maxAge is not applied to that field (unless it is a root field).
Due to conflicts with same/similar globals provided by @types/supertest (which we use in our testing), some global TypeScript definitions have been removed from apollo-server-env including that of, e.g., fetch, RequestInfo, Headers, Request, Response, ResponseInit, and more. See the full list prior to removal here. Internally in the Apollo Server tests, for the time-being, we are relying on the same-named types from TypeScript's lib.dom.d.ts — e.g., its RequestInfo type definition. For more details, see PR #5165.
Top-level exports have changed. For example:
- We no longer re-export the entirety of graphql-tools (including makeExecutableSchema) from all Apollo Server packages. To continue using them, install graphql-tools or one of its sub-packages yourself.
- The Upload scalar is no longer exported as part of dropping built-in support for file uploads.
Stopped publishing the deprecated apollo-server-testing package. This package is just a wrapper around server.executeOperation, which you can use directly.
apollo-server-caching: The test suite helper works differently, and the TestableKeyValueCache interface is removed.
The engine constructor option, ENGINE_API_KEY environment variable, and ENGINE_SCHEMA_TAG environment variables are no longer supported. Use the apollo constructor option, APOLLO_KEY environment variable, and APOLLO_GRAPH_VARIANT environment variable instead, as described in [the engine option migration guide from v2.18)[https://www.apollographql.com/docs/apollo-server/v2/migration-engine-plugins/].
When you supply an Apollo API key via the APOLLO_KEY environment variable or new ApolloServer({apollo: {key}}), Apollo Server 3 no longer parses the key to guess your Studio graph ID. You must specify it yourself, either via the APOLLO_GRAPH_ID environment variable (or new ApolloServer({apollo: {graphId}})), or as a graph ref along with the variant (e.g., your-graph-id@your-graph-variant) in the APOLLO_GRAPH_REF environment variable (or new ApolloServer({apollo: {graphRef}})).

Modified functionality

With one exception, all Apollo Server plugin methods (requestDidStart, didResolveOperation, etc.) are now async.
- Previously, some of these methods were synchronous, others were async, and some were "sometimes-async" by returning a ValueOrPromise.
- The exception is willResolveField, which remains synchronous. This method is called much more often than any other plugin method, and converting it to async might affect performance.
- In a future release, willResolveField might become "sometimes-async" by returning a ValueOrPromise.
Apollo Server now always fires the willSendResponse plugin lifecycle event after firing didEncounterError.
- In certain error cases (mostly related to automated persisted queries), Apollo Server 2 skips firing willSendResponse.
The executionDidStart event can no longer return a function as an "end hook". The "end hook" for this event now must be provided as an async function property called executionDidEnd on an object.
Renamed the GraphQLService interface to GatewayInterface.
- This interface is the type used to provide a federated gateway instance to Apollo Server. Its name has been changed to reduce ambiguity.
- The previous name is still exported for backward compatibility purposes.
Added support for serving a custom landing page at Apollo Server's base URL.
- Plugins can define a new renderLandingPage hook that returns an HTML page to serve to browsers.
- New plugins (ApolloServerPluginLandingPageProductionDefault and ApolloServerPluginLandingPageLocalDefault) are installed by default (the former when NODE_ENV is production, the latter otherwise) with instructions on how to communicate with the server, links to Apollo Sandbox, etc.
- A new ApolloServerPluginLandingPageGraphQLPlayground plugin can be installed instead to continue to use GraphQL Playground instead. The playground option provided to the ApolloServer constructor has been removed; to customize GraphQL Playground you can provide an argument to the new playground plugin. By default, no GraphQL Playground settings are overridden, including the endpoint, which now defaults to window.location.href (with most query parameters removed). This means you typically don't have to manually configure the endpoint when using GraphQL Playground.
- To disable all landing pages, install the new ApolloServerPluginLandingPageDisabled plugin.
- Apollo Server packages no longer export defaultPlaygroundOptions, PlaygroundConfig, or PlaygroundRenderPageOptions.
Bad request errors (invalid JSON, missing body, etc) are more consistent across integrations and consistently return 4xx status codes instead of sometimes returning 5xx status codes.
Setting requestContext.response.http.status now affects successful GraphQL responses, not just errors.

Changes to Node.js framework integrations

When using a non-serverless framework integration (Express, Fastify, Hapi, Koa, Micro, or Cloudflare), you now must call await server.start() before attaching the server to your framework.
- This method was introduced in v2.22 but was optional prior to Apollo Server 3.
- This requirement does not apply to the apollo-server library or to serverless framework integrations.
apollo-server-express no longer officially supports using with the connect framework.
- We have not actively removed any connect compatibility code, and we do still test that it works with connect. However, we reserve the right to break that compatibility without a major version bump of this package (we will certainly note in this changelog if we do so).
apollo-server-lambda: This package is now implemented as a wrapper around apollo-server-express. createHandler's argument now has different options:
- expressGetMiddlewareOptions, which includes options like cors and is passed through to apollo-server-express's getMiddleware
- expressAppFromMiddleware, which lets you customize HTTP processing
Also, the context function now receives an express: { req, res } option in addition to event and context
apollo-server-lambda: The handler returned by createHandler can now only be called as an async function returning a Promise (it no longer optionally accepts a callback as the third argument).
- All current Lambda Node runtimes support this invocation mode (so exports.handler = server.createHandler() will keep working without any changes).
- If you've written your own handler that calls the handler returned by createHandler with a callback, you'll need to handle its Promise return value instead.
apollo-server-lambda: Improved support for running behind an Application Load Balancer (ALB).
apollo-server-fastify is now compatible with Fastify v3 instead of Fastify v2.
apollo-server-hapi is now only tested with Hapi v20.1.2 and higher (the minimum version that supports Node 16).
The non-serverless integrations now depend on their corresponding web frameworks via peer dependencies rather than direct dependencies.
All integrations that allow CORS headers to be customized now default to access-control-allow-origin: *. This was already the case for apollo-server, Express, Fastify, and Hapi; it is now also the same for Koa (which previously reflected the request's origin), Lambda, Cloud Functions, and Azure Functions as well (which did not set CORS by default). Micro and CloudFlare do not have a built-in way of setting CORS headers.

v2.25.3

⚠️ SECURITY apollo-server-core: Update default version of the GraphQL Playground React app loaded from the CDN to be @apollographql/graphql-playground-react@1.7.42. This patches an XSS vulnerability. Note that if you are pinning the Playground React app version in your app with new ApolloServer({playground: {version: 'some version'}}), you will need to update the specified version to 1.7.42 or later to avoid this vulnerability. If you disable GraphQL Playground with new ApolloServer({playground: false}), this vulnerability does not affect you. See advisory GHSA-qm7x-rc44-rrqw for more details.

v2.25.2

apollo-server-express: Update dependencies on @types/express and @types/express-serve-static-core. PR #5352

v2.25.1

apollo-server-core, apollo-server-express: Upgrade subscriptions-transport-ws dependency and remove unneeded runtime dependency on ws. This should enable you to install Apollo Server without depending on versions of ws vulnerable to CVE-2021-32640. Note that the superficial integration of the unmaintained subscriptions-transport-ws package will be removed in Apollo Server 3; you can also avoid this vulnerability by disabling the built-in subscription support with new ApolloServer({subscriptions: false}) and using a maintained package such as graphql-ws instead. (Instead of taking this upgrade, you can also upgrade ws to 5.2.3, which was just released.)

v2.25.0

apollo-server-core: You may now specify your Studio graph as a graph ref (id@variant) via the APOLLO_GRAPH_REF environment variable or new ApolloServer({apollo: {graphRef}}) instead of specifying graph ID and graph variant separately. The apollo object passed to plugin serverWillStart and to gateway load now contains a graphRef field.
apollo-server-core: Fix a race condition where schema reporting could lead to a delay at process shutdown. PR #5222
apollo-server-core: Allow the Fetch API implementation to be overridden for the schema reporting and usage reporting plugins via a new fetcher option. PR #5179
apollo-server-core: The server.executeOperation method (designed for testing) can now take its query as a DocumentNode (eg, a gql-tagged string) in addition to as a string. (This matches the behavior of the apollo-server-testing createTestClient function which is now deprecated.) We now recommend this method instead of apollo-server-testing in our docs. Issue #4952
apollo-server-testing: Replace README with a deprecation notice explaining how to use server.executeOperation instead. Issue #4952

v2.24.1

apollo-server-core: Fix a typo that could lead to TypeScript compilation when combined with a recent version of @types/node. (This bug had no runtime effect.) PR #5149

v2.24.0

apollo-server-core: Apollo Studio usage reporting uses a more efficient format which sends fewer detailed traces to Apollo's server. This change should not have a major effect on the experience of using Apollo Studio. This also fixes a bug in all prior versions where all operations were reported to Studio as "uncached". PR #4142

v2.23.0

apollo-server-core: Add optional argument to ApolloServer.executeOperation allowing the caller to manually specify an argument to the config function analogous to that provided by integration packages. PR #4166 Issue #2886
apollo-server-cache-redis@1.4.0: New BaseRedisCache class which takes an ioredis-compatible Redis client as an argument. The existing classes RedisCache and RedisClusterCache (which pass their arguments to ioredis constructors) are now implemented in terms of this class. This allows you to use any of the ioredis constructor forms rather than just the ones recognized by our classes. This also fixes a long-standing bug where the Redis cache implementations returned a number from delete(); it now returns a number, matching what the KeyValueCache interface and the TypeScript types expect. PR #5034 PR #5088 Issue #4870 Issue #5006
apollo-server-core: Fix type for formatResponse function. It never is called with a null argument, and is allowed to return null. Issue #5009 PR #5089
apollo-server-lambda: Fix regression in v2.21.2 where thrown errors were replaced by throwing the JS Error class itself. PR #5085
apollo-server-core: If a client sends a variable of the wrong type, this is now reported as an error with an extensions.code of BAD_USER_INPUT rather than INTERNAL_SERVER_ERROR. PR #5091 Issue #3498
apollo-server-lambda: Explicitly support API Gateway payloadFormatVersion 2.0. Previously some codepaths did appropriate checks to partially support 2.0 and other codepaths could lead to errors like event.path.endsWith is not a function (especially since v2.21.1). Note that this changes the TypeScript typing of the onHealthCheck callback passed to createHandler to indicate that it can receive either type of event. If you are using TypeScript and care about having a precise typing for the argument to your onHealthCheck callback, you should determine which payload format you want to support and write new ApolloServer<APIGatewayProxyEvent>(...) or new ApolloServer<APIGatewayProxyEventV2>(...) (importing these types from aws-lambda), or differentiate between the two formats by checking to see if 'path' in event. Issue #5084 Issue #5016

v2.22.2

apollo-server-core: Fix a regression in v2.22.0 where combining apollo-server-core v2.22 with an older version of an integration package could lead to startup errors like called start() with surprising state invoking serverWillStart. The fix involves changing the semantics of the protected willStart method (which is left in only for backwards compatibility). Issue #5065 Issue #5066 PR #5073

v2.22.1

apollo-server-core: Fix a regression in v2.22.0 where startup errors could be thrown as part of the GraphQL response instead of redacted in one edge case. PR #5064

v2.22.0

Improve startup error handling by ensuring that your server has loaded its schema and executed its serverWillStart handlers successfully before starting an HTTP server. If you're using the apollo-server package, no code changes are necessary. If you're using an integration such as apollo-server-express that is not a "serverless framework", you can insert await server.start() between server = new ApolloServer() and server.applyMiddleware. (If you don't call server.start() yourself, your server will still work, but the previous behavior of starting a web server that may fail to load its schema still applies.) The serverless framework integrations (Lambda, Azure Functions, and Cloud Functions) do not support this functionality. While the protected method willStart still exists for backwards compatibility, you should replace calls to it with start or the new protected method ensureStarting. PR #4981

v2.21.2

apollo-server-core: The SIGINT and SIGTERM signal handlers installed by default (when not disabled by stopOnTerminationSignals: false) now stay active (preventing process termination) while the server shuts down, instead of letting a second signal terminate the process. The handlers still re-signal the process after this.stop() concludes. Also, if this.stop() throws, the signal handlers will now log and exit 1 instead of throwing an uncaught exception. Issue #4931
apollo-server-lambda: Refactor the handler returned by server.createHandler so that if it is not passed a callback, it acts as an async handler instead of a non-async handler. This means you can wrap it in your own async handler without having to create a callback, and makes the code more maintainable. Issue #1989 PR #5004

v2.21.1

apollo-server-lambda: The onHealthCheck option did not previously work. Additionally, health checks (with onHealthCheck or without) didn't work in all Lambda contexts, such as behind Custom Domains; the path check is now more flexible. Issue #3999 PR #4969 Issue #4891 PR #4892
The debug option to new ApolloServer (which adds stack traces to errors) now affects errors that come from requests executed with server.executeOperation (and its wrapper apollo-server-testing), instead of just errors that come from requests executed over HTTP. Issue #4107 PR #4948
Bump version of @apollographql/graphql-playground-html to v1.6.27 and @apollographql/graphql-playground-react to v1.7.39 to resolve incorrectly rendered CDN URL when Playground version was false-y. PR #4932 PR #4955 Issue #4937

v2.21.0

Apollo Server can now be installed with graphql@15 without causing peer dependency errors or warnings. (Apollo Server has a file upload feature which was implemented as a wrapper around the graphql-upload package. We have been unable to upgrade our dependency on that package due to backwards-incompatible changes in later versions, and the version we were stuck on did not allow graphql@15 as a peer dependency. We have now switched to a fork of that old version called @apollographql/graphql-upload-8-fork that allows graphql@15.) Also bump the graphql-tools dependency from 4.0.0 to 4.0.8 for graphql@15 support. Issue #4865

v2.20.0

apollo-server: Previously, ApolloServer.stop() functioned like net.Server.close() in that it did not close idle connections or close active connections after a grace period. This meant that trying to await ApolloServer.stop() could hang indefinitely if there are open connections. Now, this method closes idle connections, and closes active connections after 10 seconds. The grace period can be adjusted by passing the new stopGracePeriodMillis option to new ApolloServer, or disabled by passing Infinity (though it will still close idle connections). Note that this only applies to the "batteries-included" ApolloServer in the apollo-server package with its own built-in Express and HTTP servers. PR #4908 Issue #4097
apollo-server-core: When used with ApolloGateway, ApolloServer.stop now invokes ApolloGateway.stop. (This makes sense because ApolloServer already invokes ApolloGateway.load which is what starts the behavior stopped by ApolloGateway.stop.) Note that @apollo/gateway 0.23 will expect to be stopped in order for natural program shutdown to occur. PR #4907 Issue #4428
apollo-server-core: Avoid instrumenting schemas for the old graphql-extensions library unless extensions are provided. PR #4893 Issue #4889
apollo-server-plugin-response-cache@0.6.0: The shouldReadFromCache and shouldWriteToCache hooks were always documented as returning ValueOrPromise<boolean> (ie, that they could be either sync or async), but they actually only worked if they returned a bool. Now they can be either sync or async as intended. PR #4890 Issue #4886
apollo-datasource-rest@0.10.0: The RESTDataSource.trace method is now protected instead of private to allow more control over logging and metrics. PR #3940

v2.19.2

apollo-server-express: types: Export ExpressContext from main module. PR #4821 Issue #3699
apollo-server-env: types: The first parameter to fetch is now marked as required, as intended and in accordance with the Fetch API specification. PR #4822 Issue #4741
apollo-server-core: Update graphql-tag package to latest, now with its graphql-js peerDependencies expanded to include ^15.0.0 PR #4833

v2.19.1

apollo-server-core: The debugPrintReports option to ApolloServerPluginUsageReporting now prints traces as well. PR #4805

v2.19.0

apollo-server-testing: types: Allow generic variables usage of query and mutate functions. PR #4383
apollo-server-express: Export the GetMiddlewareOptions type. PR #4599
apollo-server-lambda: Fix file uploads - ignore base64 decoding for multipart queries. PR #4506
apollo-server-core: Do not send operation documents that cannot be executed to Apollo Studio. Instead, information about these operations will be combined into one "operation" for parse failures, one for validation failures, and one for unknown operation names.

v2.18.2

apollo-server-core: Explicitly include lru-cache dependency in apollo-server-core's dependencies. PR #4600

v2.18.1

apollo-server-core: Fix support for legacy option engine: {logger}, broken in v2.18.0. PR #4588
apollo-server-plugin-base: The ApolloServerPlugin TypeScript type does not need to extend AnyFunctionMap, which was an unnecessary change in v2.18.0. PR #4588
apollo-server-core: Improve a usage reporting error which occurs when you use Apollo Server in an unsupported way. PR #4588
apollo-server-core: Fix typo in error message for unparsable/invalid schemas provided via overrideReportedSchema. PR #4581

v2.18.0

apollo-server-core: When Apollo Server is configured with an Apollo API key, the URLs it uses to connect to Apollo's servers have changed. If the environment in which you run your servers requires you to explicitly allow connections by domain, you will need to add the new domain names. Usage reporting previously connected to https://engine-report.apollodata.com/ and now connects to https://usage-reporting.api.apollographql.com/; schema reporting previously connected to https://edge-server-reporting.api.apollographql.com/ and now connects to https://schema-reporting.api.apollographql.com/ . PR #4453
Apollo Server's support for communicating with Apollo’s commercial products has been refactored into three separate plugins exported from apollo-server-core (for usage reporting, schema reporting, and inline tracing), configured using the standard plugins option. The engine option continues to work for backwards compatibility in the 2.x series; support for engine will be deprecated in Apollo Server 3.x. Full details are available in the migration guide. PR #4453
To consistently support tracing, inline tracing is enabled by default on federated implementing services, even when an Apollo API key is provided. Previously it was not enabled when an API key was provided. You can disable it with ApolloServerPluginInlineTraceDisabled. PR #4453
The apollo-engine-reporting npm package has been obsoleted and will no longer receive updates. PR #4453
The apollo-engine-reporting-protobuf package has been renamed to apollo-reporting-protobuf. No new versions of the old package will be published. PR #4453
Implementations of ApolloServer for serverless frameworks such as Lambda now override the serverlessFramework() method to return true. We have changed our own integrations, but other implementations that extend ApolloServer which need this behavior should do the same. Support for engine.sendReportsImmediately will be dropped in Apollo Server 3.x. PR #4453
The GraphQLServiceContext type passed to the plugin serverWillStart method now contains apollo and serverlessFramework values. PR #4453
apollo-server-core / apollo-server-plugin-base: The request pipeline plugin API now supports a serverWillStop lifecycle hook. PR #4453
apollo-server-core: Previously, the usage reporting functionality registered one-shot handlers for the SIGINT and SIGTERM signals, which it used to send one final usage report before re-sending the signal to itself to continue shutdown. These signals handlers were installed by default if you enabled usage or schema reporting, and could be disabled by passing engine.handleSignals: false. Now, termination signal handling is the responsibility of Apollo Server as a whole rather than something specific to usage reporting. Apollo Server itself now registers these one-shot signal handlers, which trigger ApolloServer.stop(). This allows any plugin that implements the new serverWillStop callback to hook into shutdown logic, not just the usage reporting code. Similarly to before, these signal handlers are registered by default but can be disabled by via an option. We've changed the option name to stopOnTerminationSignals: false as it is more explicit about the behavior. PR #4453
apollo-server-core: The default logger implementation (if you don't specify your own logger or specify debug) now logs at the INFO level instead of the WARN level. The main effect is on a few built-in plugins which log one INFO message at startup; if a custom plugin logs at the INFO level then those messages will be visible by default as well. PR #4453
apollo-server-core: Parse and validate any schema passed via overrideReportedSchema to the schema reporting plugin, and throw accordingly on unparsable or invalid schemas.
Using Apollo Server from TypeScript now requires TypeScript 3.8 due to the use of the import type and export type directives. (If this proves to be a major problem we can revert this choice, but it makes it easier for us to ensure that certain large dependencies are only loaded when needed.) PR #4453
Updated @apollographql/graphql-playground-react to 1.7.33 to include an upstream fix. PR #4550

v2.17.0

subscriptions: Fix bug which prevented installSubscriptionHandlers from accepting a websocket.Server (as intended in PR #1966) and also added support for other http.Server variations (e.g., Tls). Issue #4198 PR #4200

v2.16.1

This release only includes patch updates to dependencies.

v2.16.0

apollo-server-fastify: Pass Fastify's request and reply objects into the context function, which previously had been receiving nothing. Issue #3156 [PR #3895(#3895)
apollo-server-lambda: Automatically decode payloads which are Base64-encoded when the isBase64Encoded boolean is present on Lambda event payloads. PR #4311

v2.15.1

The default branch of the repository has been changed to main. As this changed a number of references in the repository's package.json and README.md files (e.g., for badges, links, etc.), this necessitates a release to publish those changes to npm. PR #4302

v2.15.0

apollo-engine-reporting: Added a reportTiming API to allow trace reporting to be enabled or disabled on a per request basis. The option takes either a boolean or a predicate function that takes a GraphQLRequestContextDidResolveOperation or GraphQLRequestContextDidEncounterErrors and returns a boolean. If the boolean is false the request will not be instrumented for tracing and no trace will be sent to Apollo Graph Manager. The default is true so all traces will get instrumented and sent, which is the same as the previous default behavior. PR #3918
apollo-engine-reporting: Removed GraphQLServerOptions.reporting. It isn't known whether a trace will be reported at the beginning of the request because of the above change. We believe this field was only used internally within Apollo Server; let us know if this is a problem and we can suggest alternatives. Additionally, the field requestContext.metrics.captureTraces is now initialized later in the request pipeline. PR #3918
apollo-engine-reporting: Make Apollo Server throw if schema reporting is enabled for a gateway or federated service. PR #4246
apollo-engine-reporting: Remove the experimental_ prefix from schema reporting options, and specifically rename experimental_schemaReporting option name to reportSchema. (The old option names remain functional, but are deprecated.) PR #4236

v2.14.5

apollo-engine-reporting: Make Apollo Server throw if schema reporting is enabled for a gateway or federated service. PR #4246

v2.14.4

apollo-engine-reporting: Add environment variable APOLLO_SCHEMA_REPORTING that can enable schema reporting. If experimental__schemaReporting is set it will override the environment variable. PR #4206
apollo-engine-reporting: The schema reporting URL has been changed to use the new dedicated sub-domain https://edge-server-reporting.api.apollographql.com. PR #4232
apollo-server-core: Though Apollo Server is not affected due to the way it is integrated, in response to an upstream security advisory for GraphQL Playground we have published the same patch on our @apollographql/graphql-playground-html fork and bumped Apollo Server to use it. Again, this was done out of an abundance of caution since the way that Apollo Server utilizes renderPlaygroundPage is not vulnerable as it does not allow per-request Playground configuration that could allow interpolation of user-input. PR #4231

v2.14.3

This release only includes patch updates to dependencies.

v2.14.2

⚠️ SECURITY: Pass all schema validation rules to the subscription server, including validation rules that restrict introspection when introspection is meant to be disabled. Read the full GitHub Security Advisory for details.

v2.14.1

apollo-server-testing: Ensure that user-provided context is cloned when using createTestClient, per the instructions in the integration testing section of the Apollo Server documentation. Issue #4170 PR #4175

v2.14.0

apollo-server-core / apollo-server-plugin-base: Add support for willResolveField and corresponding end-handler within executionDidStart. This brings the remaining bit of functionality that was previously only available from graphql-extensions to the new plugin API. The graphql-extensions API (which was never documented) will be deprecated in Apollo Server 3.x. To see the documentation for the request pipeline API, see its documentation. For more details, see the attached PR. PR #3988
apollo-server-core: Deprecate graphql-extensions. All internal usages of the graphql-extensions API have been migrated to the request pipeline plugin API. For any implementor-supplied extensions, a deprecation warning will be printed once per-extension, per-server-startup, notifying of the intention to deprecate. Extensions should migrate to the plugin API, which is outlined in its documentation. PR #4135
apollo-engine-reporting: Currently only for non-federated graphs. Added an experimental schema reporting option, experimental_schemaReporting, for Apollo Graph Manager users. During this experiment, we'd appreciate testing and feedback from current and new users of the schema registry!

Prior to the introduction of this feature, the only way to get schemas into the schema registry in Apollo Graph Manager was to use the CLI and run apollo schema:push. Apollo schema reporting protocol is a new specification for GraphQL servers to automatically report schemas to the Apollo Graph Manager schema registry.

To enable schema reporting, provide a Graph Manager API key (available free from Apollo Graph Manager) in the APOLLO_KEY environment variable and set the experimental_schemaReporting option to true in the Apollo Server constructor options, like so:
```
const server = new ApolloServer({
  typeDefs,
  resolvers,
  engine: {
    experimental_schemaReporting: true,
    /* Other existing options can remain the same. */
  },
});
```
When enabled, a schema reporter is initiated by the apollo-engine-reporting agent. It will loop until the ApolloServer instance is stopped, periodically calling back to Apollo Graph Manager to send information. The life-cycle of this reporter is managed by the agent.

For more details on the implementation of this new protocol, see the PR which introduced it to Apollo Server and the preview documentation.

PR #4084
apollo-engine-reporting: The underlying integration of this plugin, which instruments and traces the graph's resolver performance and transmits these metrics to Apollo Graph Manager, has been changed from the (soon to be deprecated) graphql-extensions API to the new request pipeline plugins API. PR #3998

This change should be purely an implementation detail for a majority of users. There are, however, some special considerations which are worth noting:
- The federated tracing plugin's ftv1 response on extensions (which is present on the response from an implementing service to the gateway) is now placed on the extensions after the formatResponse hook. Anyone leveraging the extensions.ftv1 data from the formatResponse hook will find that it is no longer present at that phase.
apollo-tracing: This package's internal integration with Apollo Server has been switched from using the soon-to-be-deprecated graphql-extensions API to using the request pipeline plugin API. Behavior should remain otherwise the same. PR #3991
apollo-cache-control: This package's internal integration with Apollo Server has been switched from using the soon-to-be-deprecated graphql-extensions API to using the request pipeline plugin API. Behavior should remain otherwise the same. PR #3997

v2.13.0

Allow passing a WebSocket.Server to ApolloServer.installSubscriptionHandlers. PR #2314
apollo-server-lambda: Support file uploads on AWS Lambda Issue #1419 Issue #1703 PR #3926
apollo-engine-reporting: Fix inadvertent conditional formatting which prevented automated persisted query (APQ) hits and misses from being reported to Apollo Graph Manager. PR #3986
apollo-engine-reporting: Deprecate the ENGINE_API_KEY environment variable in favor of its new name, APOLLO_KEY. Continued use of ENGINE_API_KEY will result in deprecation warnings and support for it will be removed in a future major version. #3923
apollo-engine-reporting: Deprecated the APOLLO_SCHEMA_TAG environment variable in favor of its new name, APOLLO_GRAPH_VARIANT. Similarly, within the engine configuration object, the schemaTag property has been renamed graphVariant. The functionality remains otherwise unchanged, but their new names mirror the name used within Apollo Graph Manager. Continued use of the now-deprecated names will result in deprecation warnings and support will be dropped completely in the next "major" update. To avoid misconfiguration, a runtime error will be thrown if both new and deprecated names are set. PR #3855
apollo-engine-reporting-protobuf: (This is a breaking change only if you directly depend on apollo-engine-reporting-protobuf.) Drop legacy fields that were never used by apollo-engine-reporting. Added new fields StatsContext to allow apollo-server to send summary stats instead of full traces, and renamed FullTracesReport to Report and Traces to TracesAndStats since reports now can include stats as well as traces.

v2.12.0

apollo-server-core: Support providing a custom logger implementation (e.g. winston, bunyan, etc.) to capture server console messages. Though there has historically been limited output from Apollo Server, some messages are important to capture in the larger context of production logging facilities or can benefit from using more advanced structure, like JSON-based logging. This also introduces a logger property to the GraphQLRequestContext that is exposed to plugins, making it possible for plugins to leverage the same server-level logger, and allowing implementors to create request-specific log contexts, if desired. When not provided, these will still output to console. PR #3894
apollo-server-core: When operating in gateway mode using the gateway property of the Apollo Server constructor options, the failure to initialize a schema during initial start-up, e.g. connectivity problems, will no longer result in the federated executor from being assigned when the schema eventually becomes available. This precludes a state where the gateway may never become available to serve federated requests, even when failure conditions are no longer present. PR #3811
apollo-server-core: Prevent a condition which prefixed an error message on each request when the initial gateway initialization resulted in a Promise-rejection which was memoized and re-prepended with Invalid options provided to ApolloServer: on each request. PR #3811
apollo-server-express: Disable the automatic inclusion of the x-powered-by: express header. PR #3821
apollo-engine-reporting: Avoid creating new arrays when building trace trees. PR #3479
apollo-server-core: Bump graphql peerDependencies range to include ^15.0.0. PR #3944

v2.11.0

The range of accepted peerDependencies versions for graphql has been widened to include graphql@^15.0.0-rc.2 so as to accommodate the latest release-candidate of the graphql@15 package, and an intention to support it when it is finally released on the latest npm tag. While this change will subdue peer dependency warnings for Apollo Server packages, many dependencies from outside of this repository will continue to raise similar warnings until those packages own peerDependencies are updated. It is unlikely that all of those packages will update their ranges prior to the final version of graphql@15 being released, but if everything is working as expected, the warnings can be safely ignored. PR #3825

v2.10.1

apollo-server-core: Update GraphQL Playground to latest version to remove a rogue curly-brace appearing in the top-right corner of the interface under certain conditions. PR #3702 Playground PR
apollo-server-core: Typings: Allow the cache property inside persistedQueries to be optional. This was already optional at runtime where it defaults to the top-level global cache when unspecified, but with the introduction of the ttl property, it now makes sense that one may be provided without the other. #3671

v2.10.0

apollo-server-express: Support CorsOptionsDelegate type on cors parameter to applyMiddleware, to align with the supported type of the underlying cors middleware itself. #3613
apollo-server-core: Allow asynchronous initialization of datasources: the initialize method on datasources may now return a Promise, which will be settled before any resolvers are called. #3639
apollo-server-core: experimental: Allow configuration of the parsed/validated document store by introducing an experimental_approximateDocumentStoreMiB property to the ApolloServer constructor options which overrides the default cache size of 30MiB. #3755

v2.9.16

apollo-server-core: Update apollo-tooling dependencies, resolve TS build error (missing types for node-fetch) #3662

v2.9.15

apollo-engine-reporting: Fix regression introduced by #3614 which caused PersistedQueryNotFoundError, PersistedQueryNotSupportedError and InvalidGraphQLRequestError errors to be triggered before the requestDidStart handler triggered treeBuilder's startTiming method. This fix preserves the existing behavior by special-casing these specific errors. #3638 fixes #3627
apollo-server-cloud-functions: Transmit CORS headers on OPTIONS request. #3557
apollo-server-caching: De-compose options interface for KeyValueCache.prototype.set to accommodate better TSDoc annotations for its properties (e.g. to specify that ttl is defined in seconds). #3619
apollo-server-core, apollo-server-caching: Introduce a ttl property, specified in seconds, on the options for automated persisted queries (APQ) which applies specific TTL settings to the cache sets during APQ registration. Previously, all APQ cache records were set to 300 seconds. Additionally, this adds support (to the underlying apollo-server-caching mechanisms) for a time-to-live (TTL) value of null which, when supported by the cache implementation, skips the assignment of a TTL value altogether. This allows the cache's controller to determine when eviction happens (e.g. cache forever, and purge least recently used when the cache is full), which may be desireable for network cache stores (e.g. Memcached, Redis). #3623
apollo-server-core: Upgrade TS to 3.7.3 #3618

v2.9.14

apollo-server-core: Ensure that plugin's didEncounterErrors hooks are invoked for known automated persisted query (APQ) errors. #3614
apollo-server-plugin-base: Move TContext generic from requestDidStart method to ApolloServerPlugin Interface. #3525

v2.9.13

@apollo/gateway: Add @types/node-fetch as a regular dependency to avoid missing dependency for TypeScript consumers. #3546 fixes #3471
apollo-engine-reporting: Declare acceptable graphql versions ranges in peerDependencies rather than allowing it to occur implicitly (and less ideally) via its consumers (e.g. most apollo-server-* packages). #3496

v2.9.12

Reinstate #3530 via #3539 - after a patch release of the @apollo/protobufjs fork, the build issue for consumers should be resolved.

v2.9.11

Revert #3530 via #3535- the introduction of the @apollo/protobufjs fork is causing TS errors in consumer projects. Reverting this change for now, and will reintroduce it after the issue is resolved within the forked package.

v2.9.10

apollo-engine-reporting: Swap usage of protobufjs for a newly published fork located at @apollo/protobufjs. This is to account for the relative uncertainty into the continued on-going maintenance of the official protobuf.js project. This should immediately resolve a bug that affected Long types in apollo-engine-reporting and other non-Apollo projects that rely on protobuf.js's Long type. #3530

v2.9.9

apollo-server-core: Don't try parsing variables and extensions as JSON if they are defined but empty strings. #3501
apollo-server-lambda: Introduce onHealthCheck on createHandler in the same fashion as implemented in other integrations. #3458
apollo-server-core: Use graphql's isSchema to more defensively check the user-specified schema's type at runtime and prevent unexpected errors. #3462

v2.9.8

apollo-server-core: Provide accurate type for formatResponse rather than generic Function type. #3431
apollo-server-core: Pass complete request context to formatResponse, rather than just context. #3431

v2.9.7

apollo-server-errors: Fix ApolloError bug and GraphQLError spec compliance #3408

v2.9.6

@apollo/gateway, @apollo/federation, apollo-engine-reporting: Update apollo-graphql dependency to bring in apollo-tooling's #1551 which resolve runtime errors when its source is minified. While this fixes a particular minification bug when Apollo Server packages are minified, we do not recommend minification of server code in most cases. #3387 fixes #3335
apollo-server-koa: Correctly declare dependency on koa-compose. #3356
apollo-server-core: Preserve any extensions that have been placed on the response when pre-execution errors occur. #3394

v2.9.3

apollo-server-express: Add direct dependency on express to allow for usage of express.Router for getMiddleware functionality (from #2435). Previously, unlike other server integration packages, apollo-server-express did not directly need express as a dependency since it only relied on express for TypeScript typings. #3239 fixes #3238
apollo-server-lambda: Add @types/aws-lambda as a direct dependency to apollo-server-express to allow usage of its typings without needing to separately install it. #3242 fixes #2351

v2.9.2

apollo-server-koa: Drop support for Node.js v6 within the Apollo Server Koa integration in order to update koa-bodyparser dependency from v3.0.0 to v4.2.1. #3229 fixes #3050
apollo-server-express: Use explicit return type for new getMiddleware method. #3230 (hopefully) fixes #3222

v2.9.1

apollo-server-core: Make formatError available to subscriptions in the same spirit as the existing formatResponse. #2942
apollo-engine-reporting: The behavior of the engine.maxAttempts parameter previously did not match its documentation. It is documented as being the max number of attempts including the initial attempt, but until this release it was actually the number of retries excluding the initial attempt. The behavior has been changed to match the documentation (and the literal reading of the option name). #3218
apollo-engine-reporting: When sending the report fails with a server-side 5xx error, include the full error from the server in the logs. #3218
apollo-server-core: Fix regression which prevented the resizing of the schema panel in GraphQL Playground. #3224 and upstream

v2.9.0

apollo-server-express, apollo-server-koa: A new getMiddleware method has been introduced, which accepts the same parameters as applyMiddleware with the exception of the app property. This allows implementors to obtain the middleware directly and "use" it within an existing app. In the near-term, this should ease some of the pain points with the previous technique. Longer-term, we are exploring what we consider to be a much more natural approach by introducing an "HTTP transport" in Apollo Server 3.x. See this proposal issue for more information. #2435
@apollo/federation: buildFederatedSchema's typeDefs parameter now accepts arrays of DocumentNodes (i.e. type definitions wrapped in gql) and resolvers to make the migration from a single service into a federated service easier for teams previously utilizing this pattern. #3188

v2.8.2

apollo-server-koa: Update dependency koa to v2.8.1. PR #3175
apollo-server-express: Update types exported by the ASE package. PR #3173 PR #3172

v2.8.1

apollo-engine-reporting: Fix reporting errors which have non-array path fields (eg, non-GraphQLError errors). PR #3112
apollo-engine-reporting: Add missing apollo-server-caching dependency. PR #3054
apollo-server-hapi: Revert switch from accept and boom which took place in v2.8.0. PR #3089
@apollo/gateway: Change the setInterval timer, which is used to continuously check for updates to a federated graph from the Apollo Graph Manager, to be an unref'd timer. Without this change, the server wouldn't terminate properly once polling had started since the event-loop would continue to have unprocessed events on it. PR #3105
Switch to using community @types/graphql-upload types.
apollo-server-fastify: Change the typing of the HTTP response from OutgoingMessage to ServerResponse. Commit
apollo-server-hapi: Pass the raw request and response objects to graphql-uploads processRequest method to align on the same TypeScript types. Commit

v2.8.0

@apollo/federation: Add support for "value types", which are type definitions which live on multiple services' types, inputs, unions or interfaces. These common types must be identical by name, kind and field across all services. PR #3063
apollo-server-express: Use the Express send method, rather than calling net.Socket.prototype.end. PR #2842
apollo-server-hapi: Update internal dependencies to use scoped packages @hapi/accept and @hapi/boom, in place of accept and boom respectively. PR #3089

v2.7.2

apollo-engine-reporting: Fix reporting errors from backend. (The support for federated metrics introduced in v2.7.0 did not properly handle GraphQL errors from the backend; all users of federated metrics should upgrade to this version.) PR #3056 Issue #3052
apollo-engine-reporting: Clean up SIGINT and SIGTERM handlers when EngineReportingAgent is stopped; fixes 'Possible EventEmitter memory leak detected' log. PR #3090

v2.7.1

apollo-engine-reporting: If an error is thrown by a custom variable transform function passed into the reporting option sendVariableValues: { transform: ... }, all variable values will be replaced with the string [PREDICATE_FUNCTION_ERROR].
apollo-server-express: Typing fix for the connection property, which was missing from the ExpressContext interface. PR #2959
@apollo/gateway: Ensure execution of correct document within multi-operation documents by including the operationName in the cache key used when caching query plans used in federated execution. PR #3084

v2.7.0

apollo-engine-reporting: Behavior change: By default, send no GraphQL variable values to Apollo's servers instead of sending all variable values. Adding the new EngineReportingOption sendVariableValues to send some or all variable values, possibly after transforming them. This replaces the privateVariables option, which is now deprecated. PR #2931

To maintain the previous behavior of transmitting all GraphQL variable values, unfiltered, to Apollo Engine, configure engine.sendVariableValues as follows:
```
engine: {
  sendVariableValues: { all: true }
}
```
apollo-engine-reporting: Behavior change: By default, send no GraphQL request headers and values to Apollo's servers instead of sending all. Adding the new EngineReportingOption sendHeaders to send some or all header values. This replaces the privateHeaders option, which is now deprecated. PR #2931

To maintain the previous behavior of transmitting all GraphQL request headers and values, configure engine.sendHeaders as following:
```
engine: {
  sendHeaders: { all: true }
}
```
apollo-engine-reporting: Behavior change: If the error returned from the engine.rewriteError hook has an extensions property, that property will be used instead of the original error's extensions. Document that changes to most other GraphQLError fields by engine.rewriteError are ignored. PR #2932
apollo-engine-reporting: Behavior change: The engine.maskErrorDetails option, deprecated by engine.rewriteError in v2.5.0, now behaves a bit more like the new option: while all error messages will be redacted, they will still show up on the appropriate nodes in a trace. PR #2932
apollo-server-core, @apollo/gateway: Introduced managed federation support. For more information on managed federation, see the blog post or jump to the documentation for managed federation.
@apollo/gateway@0.7.1: Don't print a warning about an unspecified "graph variant" (previously, and in many ways still, known as "schema tag") every few seconds. We do highly recommend specifying one when using the Apollo Platform features though! PR #3043
graphql-playground: Update to resolve incorrect background color on tabs when using the light theme. PR #2989 Issue #2979
graphql-playground: Fix "Query Planner" and "Tracing" panels which were off the edge of the viewport.
apollo-server-plugin-base: Fix GraphQLRequestListener type definitions to allow return void. PR #2368

v2.6.7

apollo-server-core: Guard against undefined property access in isDirectiveDefined which resulted in "Cannot read property 'some' of undefined" error. PR #2924 Issue #2921

v2.6.6

apollo-server-core: Avoid duplicate cacheControl directives being added via isDirectiveDefined, re-landing the implementation reverted in v2.6.1 which first surfaced in v2.6.0. PR #2762 Reversion PR #2754 Original PR #2428
apollo-server-testing: Add TypeScript types for apollo-server-testing client. PR #2871
apollo-server-plugin-response-cache: Fix undefined property access attempt which occurred when an incomplete operation was received. PR #2792 Issue #2745

v2.6.5

apollo-engine-reporting: Simplify the technique for capturing operationName. PR #2899
apollo-server-core: Fix regression in 2.6.0 which caused engine: false not to disable Engine when the ENGINE_API_KEY environment variable was set. PR #2850
@apollo/federation: Introduced a README.md. PR #2883
@apollo/gateway: Introduced a README.md. PR #2883

v2.6.4

@apollo/gateway: Pass context through to the graphql command in LocalGraphQLDataSource's process method. PR #2821
@apollo/gateway: Fix gateway not sending needed variables for subqueries not at the root level. PR #2867
@apollo/federation: Allow matching enums/scalars in separate services and validate that enums have matching values. PR #2829.
@apollo/federation: Strip @external fields from interface extensions. PR #2848
@apollo/federation: Add support for list type keys in federation. PR #2841
@apollo/federation: Deduplicate variable definitions for sub-queries. PR #2840

v2.6.3

apollo-engine-reporting: Set forbiddenOperation and registeredOperation later in the request lifecycle. PR #2828
apollo-server-core: Add queryHash to GraphQLExecutor for federation. PR #2822
@apollo/federation: Preserve descriptions from SDL of federated services. PR #2830

v2.6.2

apollo-engine-reporting-protobuf: Update protobuf to include forbiddenOperations and registeredOperations. PR #2768
apollo-server-core: Add forbiddenOperation and registeredOperation to GraphQLRequestMetrics type. PR #2768
apollo-engine-reporting: Set forbiddenOperation and registeredOperation on trace if the field is true on requestContext.metrics. PR #2768
apollo-server-lambda: Remove Object.fromEntries usage. PR #2787

v2.6.1

Revert: Don't add cacheControl directive if one has already been defined. Presently, although the TypeScript don't suggest it, passing a String as typeDefs to ApolloServer is supported and this would be a breaking change for non-TypeScript users. PR #2428

v2.6.0

apollo-server-core: Introduce new didEncounterErrors life-cycle hook which has access to unformatted errors property on the requestContext, which is the first positional parameter that this new request life-cycle receives. PR #2719
apollo-server-core: Allow request pipeline life-cycle hooks (i.e. plugins) to modify the response's http.status code (an integer) in the event of an error. When combined with the new didEncounterErrors life-cycle hook (see above), this will allow modifying the HTTP status code in the event of an error. PR #2714
apollo-server-lambda: Set callbackWaitsForEmptyEventLoop to false for OPTIONS requests to return as soon as the callback is triggered instead of waiting for the event loop to empty. PR #2638
apollo-server: Support onHealthCheck in the ApolloServer constructor in the same way as cors is supported. This contrasts with the -express, -hapi, etc. variations which accept this parameter via their applyMiddleware methods and will remain as-is. PR #2672
core: Expose SHA-512 hex hash digest of the Engine API key to plugins, when available, as engine.apiKeyHash. PR #2685 PR #2736
apollo-datasource-rest: If another Content-type is already set on the response, don't overwrite it with application/json, allowing the user's initial Content-type to prevail. PR #2520
Don't add cacheControl directive if one has already been defined. PR #2428
apollo-cache-control: Do not respond with Cache-control headers if the HTTP response contains errors. PR #2715
apollo-server-core: Skip loading util.promisify, Array.flat, Array.flatMap, and Object.fromEntries polyfills, none of which are needed in Node 12+. PR #2278 PR #5244
apollo-server-core: Lazy load subscriptions-transport-ws in core PR #2278
apollo-server-cache-redis: BREAKING FOR USERS OF apollo-server-cache-redis (This is a package that must be updated separately but shares the same CHANGELOG.md with Apollo Server itself.) A new major version of this package has been published and updated to support Redis Standalone, Cluster and Sentinel modes. This is a breaking change since it is now based on ioredis instead of node_redis. Although this update is compatible with the most common uses of apollo-server-cache-redis, please check the options supported by ioredis while updating to this version. The constructor options are passed directly from RedisCache to the new Redis adapter. The pre-1.0 versions should continue to work with Apollo Server without modification. PR #1770

v2.5.1

Upgrade GraphQL Playground to the latest upstream release. This release also includes a new "Query Plan" panel for displaying the query planning results when running the Apollo Gateway.

v2.5.0

New

New plugin package apollo-server-plugin-response-cache implementing a full query response cache based on apollo-cache-control hints. The implementation added a few hooks and context fields; see the PR for details. There is a slight change to cacheControl object: previously, cacheControl.stripFormattedExtensions defaulted to false if you did not provide a cacheControl option object, but defaulted to true if you provided (eg) cacheControl: {defaultMaxAge: 10}. Now stripFormattedExtensions defaults to false unless explicitly provided as true, or if you use the legacy boolean cacheControl: true. For more information, read the documentation. PR #2437
Add rewriteError option to EngineReportingOptions (i.e. the engine property of the ApolloServer constructor). When defined as a function, it will receive an err property as its first argument which can be used to manipulate (e.g. redaction) an error prior to sending it to Apollo Engine by modifying, e.g., its message property. The error can also be suppressed from reporting entirely by returning an explicit null value. For more information, read the documentation and the EngineReportingOptions API reference. maskErrorDetails is now deprecated. PR #1639
apollo-server-azure-functions: Support @azure/functions to enable Apollo Server Typescript development in Azure Functions. PR #2487
Allow GraphQLRequestListener callbacks in plugins to depend on this. PR #2470
apollo-server-testing: Add variables and operationName to Query and Mutation types. PR #2307 Issue #2172

Bug fixes

Add cache-control: no-cache header to both PersistedQueryNotSupportedError and PersistedQueryNotFoundError responses as these should never be cached. PR #2452
apollo-datasource-rest: Don't attempt to parse "204 No Content" responses as JSON. PR #2446
apollo-server-express: Fix Playground URL when Apollo Server is mounted inside of another Express app by utilizing req.originalUrl. PR #2451
apollo-datasource-rest: Correctly allow a TTL value of 0 to represent "not-cacheable". PR #2588
apollo-datasource-rest: Fix Invalid argument in IE11, when this.headers is undefined. PR #2607

v2.4.8

No functional changes in this version. The patch version has been bumped to fix the README.md displayed on the npm package for apollo-server as a result of a broken publish. Apologies for the additional noise!

v2.4.7

Fix typings which incorrectly included cors as part of the constructor options for apollo-server-express (it should be defined via applyMiddleware) but, conversely, inadvertently omitted the perfectly valid cors option from the apollo-server constructor (where applyMiddleware is not used/available). PR #2373 Issue #1882

v2.4.6

Allow Node.js-like runtimes to identify as Node.js as well. PR #2357 Issue #2356

v2.4.5

apollo-server-express: Export ExpressContext PR #2352

v2.4.4

Fix typing for ContextFunction incorrectly requiring the context object the function produces to match the parameters of the function PR #2350

v2.4.3

apollo-server-lambda: Fix typings which triggered "Module has no default export" errors. PR #2230
apollo-server-koa: Support OPTIONS requests PR #2288
Add req and res typings to the ContextFunction argument for apollo-server and apollo-server-express. Update ContextFunction return type to allow returning a value synchronously. PR #2330
Type the formatError function to accept an GraphQLError as an argument and return a GraphQLFormattedError PR #2343

v2.4.2

apollo-server-fastify is now on Apollo Server and lives within the apollo-server repository. This is being introduced in a patch version, however it's a major version bump from the last time apollo-server-fastify was published under 1.0.2. PR #1971
Move apollo-graphql package to the apollo-tooling repository PR #2316

v2.4.1

Fix inaccurate total duration in apollo-tracing PR #2298
Avoid importing entire crypto dependency tree if not in Node.js. PR #2304
Allow passing parseOptions to ApolloServerBase constructor. PR #2289
Rename azureFunctions.d.ts to azureFunctions.ts. PR #2287
Require apollo-engine-reporting only if EngineReportingAgent used. PR #2305

v2.4.0

Implement an in-memory cache store to save parsed and validated documents and provide performance benefits for repeat executions of the same document. PR #2111 (>=2.4.0-alpha.0)
Fix: Serialize arrays as JSON on fetch in RESTDataSource. PR #2219
Fix: The privateHeaders configuration for apollo-engine-reporting now allows headers to be specified using any case and lower-cases them prior to comparison. PR #2276
Fix broken apollo-server-azure-functions TypeScript definitions. PR #2287

v2.3.3

apollo-server (only): Stop double-invocation of serverWillStart life-cycle event. (More specific integrations - e.g. Express, Koa, Hapi, etc. - were unaffected.) PR #2239
Avoid traversing graphql-upload module tree in run-time environments which aren't Node.js. PR #2235

v2.3.2

Switch from json-stable-stringify to fast-json-stable-stringify. PR #2065
Fix cache hints of maxAge: 0 to mean "uncacheable". #2197
Apply defaultMaxAge to scalar fields on the root object. #2210
Don't write to the persisted query cache until execution will begin. PR #2227
apollo-server-azure-functions: Added Azure Functions documentation and deployment examples PR #2131, Issue #2092

v2.3.1

Provide types for graphql-upload in a location where they can be accessed by TypeScript consumers of apollo-server packages. ccf935f9 Issue #2092

v2.3.0

BREAKING FOR NODE.JS <= 8.5.0 ONLY: To continue using Apollo Server 2.x in versions of Node.js prior to v8.5.0, file uploads must be disabled by setting uploads: false on the ApolloServer constructor options. Without explicitly disabling file-uploads, the server will throw at launch (with instructions and a link to our documentation).

This early deprecation is due to changes in the third-party graphql-upload package which Apollo Server utilizes to implement out-of-the-box file upload functionality. While, in general, Apollo Server 2.x aims to support all Node.js versions which were under an LTS policy at the time of its release, we felt this required an exception. By throw-ing when uploads is not explicitly set to false, we aim to make it clear immediately (rather than surprisingly) that this deprecation has taken effect.

While Node.js 6.x is covered by a Long Term Support agreement by the Node.js Foundation until April 2019, there are substantial performance (e.g. V8 improvements) and language changes (e.g. "modern" ECMAScript support) offered by newer Node.js engines (e.g. 8.x, 10.x). We encourage all users of Apollo Server to update to newer LTS versions of Node.js prior to the "end-of-life" dates for their current server version.

We intend to drop support for Node.js 6.x in the next major version of Apollo Server.

For more information, see PR #2054 and our documentation.

v2.2.7

apollo-engine-reporting: When multiple instances of apollo-engine-reporting are loaded (an uncommon edge case), ensure that encodedTraces are handled only once rather than once per loaded instance. PR #2040

v2.2.6

apollo-server-micro: Set the Content-type to text/html for GraphQL Playground. PR #2026

v2.2.5

Follow-up on the update to graphql-playground-html in previous release by also bumping the minor version of the graphql-playground-react dependency to 1.7.10 — which is the version requested from the from the CDN bundle by graphql-playground-html. PR #2037

v2.2.4

Fix GraphQL Playground documentation scrolling bug in Safari by updating to latest (rebased) fork of graphql-playground-html. PR #2037

v2.2.3

When generateClientInfo is not used to define the client name, client version and client reference ID, Apollo Server will now default to the values present in the HTTP headers of the request (apollographql-client-name, apollographql-client-reference-id and apollographql-client-version respectively). As a last resort, when those headers are not set, the query extensions' clientInfo values will be used. PR #1960

v2.2.2

Fixed TypeScript 2.2 compatibility via updated apollo-tooling dependency. Issue #1951 26d6c739
Throw a more specific error when asynchronous introspection query behavior is detected. PR #1955

v2.2.1

Added support for an array of modules on the ApolloServer constructor options. Each element of the modules can point to a module which exports typeDefs and resolvers. These modules can be used in lieu of, or in combination with, directly specifying schema or typeDefs/resolvers on the constructor options. This provides greater modularity and improved organization for logic which might be limited to a specific service. 8f6481e6.
Added resolveObject support to query execution. bb67584.
Fix broken apollo-server-cloud-functions in 2.2.0 caused by missing TypeScript project references which resulted in the package not being published to npm in compiled form. PR #1948

v2.2.0

New request pipeline, including support for plugins which can implement lifecycle hooks at various stages of a request. PR #1795.
Introduce new apollo-server-testing utilities. PR #1909
Fix mocks configuration to allow disabling of mocks by using mocks: false, even if mockEntireSchema is true. PR #1835
Update graphql-playground-html to 1.7.8. PR #1855
Bring back Azure functions support Issue #1752 PR #1753
Allow an optional function to resolve the rootValue, passing the DocumentNode AST to determine the value. PR #1555
Follow-up on the work in PR #1516 to also fix missing insertion cursor/caret when a custom GraphQL configuration is specified which doesn't specify its own cursorShape property. PR #1607
Azure functions support Issue #1752 PR #1753 PR #1948
Allow JSON parsing in RESTDataSource of Content Type application/hal+json. PR #185
Add support for a requestAgent configuration parameter within the engine configuration. This can be utilized when a proxy is necessary to transmit tracing and metrics data to Apollo Engine. It accepts either an http.Agent or https.Agent and behaves the same as the agent parameter to Node.js' http.request. PR #1879
Allow an optional parameter to the RESTDataSource constructor which takes a node-fetch-compatible fetch implementation that will be used for HTTP calls instead of the default fetch. PR #1807

v2.1.0

Updated the google-cloud-functions package to handle null paths PR #1674
Update link inside Authentication Docs PR #1682
Fix making sure all headers are getting reported to Engine properly when using privateHeaders PR #1689
(experimental, subject to change/removal) Provide ability to specify client info in traces #1631

v2.0.8

Reporting: Catch Error if JSON.Stringify Fails for Engine Trace PR #1668
Core: Allow context to be passed to all GraphQLExtension methods. PR #1547

v2.0.7

Fix #1581 apollo-server-micro top level error response #1619
Switch ApolloServerBase.schema from private access to protected access. #1610
Add toggle for including error messages in reports #1615
Fix apollo-server-cloud-functions tests #1611

v2.0.6

Update graphql-playground-html to 1.7.4 #1586
Add support for graphql-js v14 by augmenting typeDefs with the @cacheControl directive so SDL validation doesn't fail #1595
Add node-fetch extensions typing to RequestInit #1602

v2.0.5

Google Cloud Function support #1402 #1446
Switch to a fork of apollo-upload-server to fix missing core-js dependency. #1556

v2.0.4

apollo-server: Release due to failed build and install

v2.0.3

apollo-server: failed publish
pass payload into context function for subscriptions #1513
Add option to mock the entire schema(i.e. sets preserveResolvers) PR #1546

v2.0.2

Release with Lerna 3 due
Hapi: Allow additional route options to be passed to Hapi.js plugin. PR #1384
express, koa: remove next after playground #1436
Hapi: Pass the response toolkit to the context function. #1407
update apollo-engine-reporting-protobuf to non-beta #1429
playground would use its own settings as default #1516
Lambda: Look in event.path first when picking endpoint for GraphQL Playground #1527
Fix to allow enabling GraphQL Playground in production with custom config #1495

v2.0.1

This version failed to publish fully/correctly and should not be used.

v2.0.0-rc.10

Fix and Export Extension and Playground Types #1360
Pin internal dependencies #1361

v2.0.0-rc.9

This version failed to publish fully/correctly and should not be used.

v2.0.0-rc.8

export GraphQLUpload from integrations #1322
add cors to vanilla #1335
export bodyParser.Options to koa #1334
add and use playground in ApolloServer constructor #1297
breaking: remove calculate headers as function #1337
breaking: remove formatParams #1331

v2.0.0-rc.7

enable engine reporting from lambda #1313
remove flattening of errors #1288
dynamic url in datasource (#1277)

v2.0.0-rc.6

BREAKING: errors are passed to user extensions, then engine reporting, and finally formatError (#1272)
formatError only called once on validation errors (#1272)
BREAKING: apollo-server-env does place types in global namespace (#1259)
export Request from apollo-datasource-rest and graphql-extensions (53d7a75 c525818)
Use scoped graphql-playground and centralize version (8ea36d8, 84233d2)
fix dependencies + exports (#1257)
fix data source + context cloning (7e35305)
use fetch instead of Node request for engine-reporting (#1274)

v2.0.0-rc.5

fix formatError to keep prototype of Error (#1235)

v2.0.0-rc.4

Add trailing slash to data source
allow body passed to data source
new apollo-engine-reporting agent

v2.0.0-rc.3

graphql as peerDependency (#1232)
APQ in batches (#1234)
APQ hits/misses in traces

v2.0.0-rc.2

Missing apollo-upload-server dependency (#1221)
encode trace report over each request in apollo-engine-reporting

v2.0.0-rc.1

BREAKING: remove logFunction (71a403d), see this commit for an implementation
move upload option to constructor (#1204)
fixed hapi gui bugs (#1211)
remove requirement for exModuleInterop (#1210)
change BadUserInputError to UserInputError (#1208)
add cache-control headers for CDN integration (#1138)
Lambda support (thanks to @adnsio, @bwlt, and @gragio #1138)

Data sources

add memcache and redis support (#1191)
add patch method (#1190)

v2.0.0-rc.0

Breaking: registerServer changed to server.applyMiddleware (3279991)
Breaking: subscriptions enabled with installSubscriptionHandlers
Add Data Sources (#1163)

v2.0.0-beta.4

Bug fix to allow async context (#1129)
logFunction is now an extension (#1128)
Allow user defined extensions and include engine reporting (#1105)

v2.0.0-beta.3

remove registerServer configuration from apollo-server's listen (#1090)
move health check into variants (#1086)
Add file uploads, breaking requires removing scalar Upload from the typeDefs (#1071)
Add reporting to Engine as apollo-engine-reporting (#1105)
Allow users to define extensions (#1105)

v2.0.0-beta.2

ListenOptions:

engine -> engineProxy
port, host, and other http options moved under http key (#1080)
subscriptions moved to server.listen (#1059)
Add mocks to server constructor (#1017)
Add bodyParserConfig parameter to registerServer in apollo-server (#1059) commit
Hapi variant (#1058) (#1082)
Remove tests and guaranteed support for Node 4 PR #1024
Cleanup docs PR #1233

1.4.0

[Issue #626] Integrate apollo-fastify plugin. PR #1013
add hapi 16 next() invocation PR #743
Add skipValidation option PR #839
apollo-server-module-graphiql: adds an option to the constructor to disable url rewriting when editing a query PR #1047
Upgrade subscription-transport-ws to 0.9.9 for GraphiQL

v1.3.6

Recognize requests with Apollo Persisted Queries and return PersistedQueryNotSupported to the client instead of a confusing error. PR #982

v1.3.5

apollo-server-adonis: The Content-type of an operation response will now be correctly set to application/json. PR #842 PR #910
apollo-server-azure-functions: Fix non-functional Azure Functions implementation and update examples in Azure Functions' README.md. PR #753 Issue #684
Fix TypeError on GET requests with missing query parameter. PR #964
The typing on the context of GraphQLServerOptions now matches the equivalent type used by graphql-tools. PR #919
Middleware handlers now used named (rather than anonymous) functions to enable easier identification during debugging/profiling. PR #827
The npm-check-updates package has been removed as a "dev dependency" which was resulting in an older version of npm being used during testing. PR #959
The typing on HttpQueryRequest's query attribute now enforces that its object properties' keys be Strings. PR #834
TypeScript types have been updated via updates to @types/node, @types/connect, @types/koa and @types/aws-lambda.

v1.3.4

Upgrade to apollo-cache-control@0.1.0 and allow you to specify options to it (such as the new defaultMaxAge) by passing cacheControl: {defaultMaxAge: 5} instead of cacheControl: true.

v1.3.3

Updated peer dependencies to support graphql@0.13.x.
apollo-server-express: The GraphQLOptions type is now exported from apollo-server-express in order to facilitate type checking when utilizing graphqlExpress, graphiqlExpress, graphqlConnect and graphiqlConnect. PR #871
Update GraphiQL version to 0.11.11. PR #914

v1.3.2

Updated peer dependencies and tests to support graphql@0.12.
Fix issue where the core runQuery method broke the ability to use the Node async_hooks feature's call stack. PR #733
Hoist declarations of rarely used functions out of doRunQuery to improve performance. PR# 821

v1.3.1

Fixed a fatal execution error with the new graphql@0.12.

v1.3.0

Breaking: apollo-server-hapi: now supports Hapi v17, and no longer supports Hapi v16. For information on running Apollo Server 1.x with Hapi v16, check this documentation.
New package: apollo-server-adonis supporting the Adonis framework!
The graphqlOptions parameter to server GraphQL integration functions now accepts context as a function and as an object with a prototype. PR #679
apollo-server-express: Send Content-Length header.
apollo-server-micro: Allow Micro 9 in peerDependencies. PR #671
GraphiQL integration:
- Recognize Websocket endpoints with secure wss:// URLs.
- Only include truthy values in GraphiQL URL.

v1.2.0

New feature: Add support for Apollo Cache Control. Enable apollo-cache-control by passing cacheControl: true to your server's GraphQL integration function.
Include README.md in published npm packages.

v1.1.7

Added support for the vhost option for Hapi PR #611
Fix dependency on apollo-tracing to be less strict.

v1.1.6

GraphiQL integration: add support for websocketConnectionParams for subscriptions. #452 PR 548

(v1.1.4 had a major bug and was immediately unpublished. v1.1.5 was identical to v1.1.6.)

v1.1.3

GraphiQL integration: Fixes bug where CORS would not allow Access-Control-Allow-Origin: * with credential 'include', changed to 'same-origin' Issue #514
Updated peer dependencies to support graphql@0.11.

v1.1.2

Fixed bug with no URL query params with GraphiQL on Lambda Issue #504 PR #512

v1.1.1

Added support for Azure Functions #503

v1.1.0

Added ability to provide custom default field resolvers #482
Add tracing option to collect and expose trace data in the Apollo Tracing format
Add support for GraphiQL editor themes in #484 as requested in #444
Add support for full websocket using GraphiQL #491
Updated restify lib (@yucun) in #472
Updated package apollo-server-micro, updated micro in devDependencies and peerDependencies to ^8.0.1

v1.0.3

Revert #463, because it's a breaking change that shouldn't have been a patch update.

v1.0.2

Rename packages from graphql-server- to apollo-server- #465. We'll continue to publish graphql-server- packages that depend on the renamed apollo-server- packages for the time being, to ensure backwards compatibility.

v1.0.1

Fix Express package not calling the callback on completion (@chemdrew) in #463

v1.0.0

Add package readmes for Express, Hapi, Koa, Restify (@helfer) in #442
Updated & fixed typescript typings (@helfer) in #440

v0.9.0

Allow GraphiQLOptions to be a function (@NeoPhi) on #426

v0.8.5

Fix: graphql-server-micro now properly returns response promises #401

v0.8.4

v0.8.3

v0.8.2

Fix issue with auto-updating dependencies that caused fibers to update accidentally (@helfer) on #425

v0.8.1

Security Fix Ensure queries submitted via HTTP GET run through validation (@DxCx) on #424

v0.8.0

Persist window.location.hash on URL updates #386
Added support for graphql-js > 0.10.0 #407
Updated subscriptions-transport-ws for GraphiQL with subscriptions #407

v0.7.2

Fix include passHeader field that was accidentally removed

v0.7.1

Fix GraphiQL fetcher to use endpointURL parameter instead of hardcoded URI.#365

v0.7.0

Add Zeit Micro Integration #324
add support for subscriptionURL to GraphiQL (@urigo on #320
Restify: Fix for calling next() (@jadkap) on #285
Breaking: Update all dependencies #329

v0.6.0

Add AWS Lambda Integration PR #247
Update GraphiQL to version 0.9.1 (@ephemer) on #293
Restify integration (@joelgriffith) on #189
run batched requests in parallel (@DxCx) on #273
Fix GraphiQL options variables. Issue #193. (@alanchristensen) on PR #255
Allow graphql@0.9.0 as peerDependency (@Chris-R3) on PR #278

v0.5.1

add support for HTTP GET Method (@DxCx) on #180

v0.5.0

Switch graphql typings for typescript to @types/graphql #260

v0.4.4

Update GraphiQL to version 0.8.0 (@DxCx) on #192
Upgrade to GraphQL-js 0.8.1.

v0.4.2

Restructure Apollo Server into 6 new packages, and rename to GraphQL Server (@DxCx) and (@stubailo) in #183 and #164.
There are now 6 packages that make up the GraphQL server family:
- graphql-server-core
- graphql-module-graphiql
- graphql-module-operation-store
- graphql-server-express
- graphql-server-hapi
- graphql-server-koa
Exports have been renamed. Everything that used to export apollo* now exports graphql*, for example apolloExpress has become graphqlExpress.
The repository is now managed using Lerna.

v0.3.3

Fix passHeader option in GraphiQL (Both Hapi and Koa)
Pass ctx instead of ctx.request to options function in Koa integration (@HriBB) in PR #154
Manage TypeScript declaration files using npm. (@od1k in #162)
Fix connect example in readme. (@conrad-vanl in #165)
Add try/catch to formatError. (@nicolaslopezj in #174)
Clone context object for each query in a batch.

v0.3.2

Added missing exports for hapi integration (@nnance) in PR #152

v0.3.1

Fixed dependency issue with boom package that affected the hapi integration. (@sammkj in #150)

v0.3.0

Refactor Hapi integration to improve the API and make the plugins more idiomatic. (@nnance) in PR #127
Fixed query batching with Hapi integration. Issue #123 (@nnance) in PR #127
Add support for route options in Hapi integration. Issue #97. (@nnance) in PR #127
CamelCase Hapi. Issue #129. (@nnance) in PR #132
Fix error handling when parsing variables parameter. Issue #130. (@nnance) in PR #131
Improve logging function. Issue #79. (@nnance) in PR #136
Output stack trace for errors in debug mode. Issue #111. (@nnance) in PR #137
Allow to pass custom headers in GraphiQL (@nicolaslopezj in #133).

v0.2.6

Expose the OperationStore as part of the public API. (@nnance)
Support adding parsed operations to the OperationStore. (@nnance)
Expose ApolloOptions as part of the public API.

v0.2.5

Made promise compatible with fibers (@benjamn in #92)

v0.2.2

Log server events such as request start etc. with logFunction (@helfer in #78)

v0.2.1

Complete refactor of Apollo Server using TypeScript. PR #41
Added Hapi integration (@nnance in #46)
Added Koa integration (@HriBB in #59)
Changed express integration to support connect as well (@helfer in #58)
Dropped express-graphql dependency
Dropped support for GET requests, only POST requests are allowed now
Split GraphiQL into a separate middleware
Factored out core to support Hapi, Koa and connect implementations
Added support for query batching
Added support for query whitelisting / stored queries
Removed body parsing from express integration. Body must be parsed outside of apollo now
Added formatRequest and formatResponse functions to apollo options.
Removed support for shorthand schema definitions, connectors and mocks (use graphql-tools instead)

v0.1.5

BUG: Fixed a spelling error with tracer.submit() from PR #26 in PR #31

v.0.1.4

BUG: Fixed a bug with tracer mocks that would throw a TypeError when using Ava #26

v0.1.3

Updated graphql dependency to 0.6.0

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