feat: piscina workers for ut #4282
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Summary by CodeRabbit
Summary by CodeRabbit
WalkthroughThis update introduces a Piscina-based worker pool for asynchronous user event transformation processing. The Changes
Sequence Diagram(s)sequenceDiagram
participant Client
participant UserTransformController
participant PiscinaService
participant PiscinaWorker
participant UserTransformService
Client->>UserTransformController: POST /transform (events, features, requestSize)
alt USE_PISCINA = true
UserTransformController->>PiscinaService: transform(events, features, requestSize)
PiscinaService->>PiscinaWorker: run({events, features, requestSize})
PiscinaWorker->>UserTransformService: transformRoutine(events, features, requestSize)
UserTransformService-->>PiscinaWorker: UserTransformationServiceResponse
PiscinaWorker-->>PiscinaService: UserTransformationServiceResponse
PiscinaService-->>UserTransformController: UserTransformationServiceResponse
else USE_PISCINA = false
UserTransformController->>UserTransformService: transformRoutine(events, features, requestSize)
UserTransformService-->>UserTransformController: UserTransformationServiceResponse
end
UserTransformController-->>Client: Response
Suggestions for Improvement
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Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## develop #4282 +/- ##
===========================================
- Coverage 91.21% 91.11% -0.11%
===========================================
Files 632 637 +5
Lines 33053 33447 +394
Branches 7827 7905 +78
===========================================
+ Hits 30150 30475 +325
- Misses 2658 2733 +75
+ Partials 245 239 -6 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Allure Test reports for this run are available at:
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Allure Test reports for this run are available at:
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satishrudderstack
requested review from
a team,
abhimanyubabbar,
fracasula,
sandeepdsvs and
utsabc
![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
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Actionable comments posted: 2
🧹 Nitpick comments (4)
src/services/piscina/__tests__/wrapper.test.ts (1)
16-26: Before hook cleanup can be improved for performance.The test setup properly clears mocks and resets environment variables between tests. However, using
deleteon environment variables can impact performance.Consider using undefined assignment instead of delete operator for better performance:
beforeEach(() => { jest.clearAllMocks(); (Piscina as unknown as jest.Mock).mockImplementation(() => mockPiscina); // Reset environment variables process.env.USE_PISCINA = 'true'; - delete process.env.PISCINA_MAX_THREADS; - delete process.env.PISCINA_MIN_THREADS; - delete process.env.PISCINA_IDLE_TIMEOUT; - delete process.env.PISCINA_MAX_QUEUE; - delete process.env.PISCINA_CONCURRENT_TASKS_PER_WORKER; + process.env.PISCINA_MAX_THREADS = undefined; + process.env.PISCINA_MIN_THREADS = undefined; + process.env.PISCINA_IDLE_TIMEOUT = undefined; + process.env.PISCINA_MAX_QUEUE = undefined; + process.env.PISCINA_CONCURRENT_TASKS_PER_WORKER = undefined; });🧰 Tools
🪛 Biome (1.9.4)
[error] 21-21: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 22-22: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 23-23: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 24-24: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 25-25: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
src/services/piscina/wrapper.ts (3)
17-29: Explicitly declare the constructor as privateThe singleton pattern implementation should have an explicitly declared private constructor to prevent direct instantiation outside the class.
class PiscinaService { private static instance: PiscinaService; private piscina: Piscina | null = null; private isInitialized = false; + private constructor() {} private static getInstance(): PiscinaService { if (!PiscinaService.instance) { PiscinaService.instance = new PiscinaService(); } return PiscinaService.instance; }
31-54: Add validation for configuration valuesThe numerical configuration values from environment variables should be validated to ensure they're within acceptable ranges for Piscina.
private getPiscinaConfig(): PiscinaConfig { const config: PiscinaConfig = {}; if (process.env.PISCINA_MAX_THREADS) { - config.maxThreads = parseInt(process.env.PISCINA_MAX_THREADS, 10); + const maxThreads = parseInt(process.env.PISCINA_MAX_THREADS, 10); + if (maxThreads > 0) { + config.maxThreads = maxThreads; + } else { + logger.warn(`Invalid PISCINA_MAX_THREADS value: ${process.env.PISCINA_MAX_THREADS}, must be > 0`); + } } // Apply similar validation to other numerical configuration parameters
94-101: Add explicit typing for Piscina's run method parameterCreating an interface for the Piscina worker's input parameters would improve type safety and documentation.
+ interface PiscinaWorkerInput { + events: ProcessorTransformationRequest[]; + features: FeatureFlags; + requestSize: number; + } public static async transform( events: ProcessorTransformationRequest[], features: FeatureFlags, requestSize: number, ): Promise<UserTransformationServiceResponse> { const service = PiscinaService.getInstance(); - return service.getPiscinaInstance().run({ events, features, requestSize }); + return service.getPiscinaInstance().run<UserTransformationServiceResponse, PiscinaWorkerInput>({ + events, + features, + requestSize + }); }
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⛔ Files ignored due to path filters (2)
package-lock.jsonis excluded by!**/package-lock.json,!**/*.jsonpackage.jsonis excluded by!**/*.json
📒 Files selected for processing (5)
src/controllers/userTransform.ts(2 hunks)src/services/piscina/__tests__/wrapper.test.ts(1 hunks)src/services/piscina/transform.ts(1 hunks)src/services/piscina/wrapper.ts(1 hunks)src/util/cluster.js(3 hunks)
🧰 Additional context used
📓 Path-based instructions (1)
`**/*.js`: Focus on ESLint errors (max 3) and warnings (max 5).
**/*.js: Focus on ESLint errors (max 3) and warnings (max 5).
src/util/cluster.js
🧬 Code Graph Analysis (3)
src/util/cluster.js (4)
src/util/worker.js (3)
require(2-2)require(3-3)require(4-4)src/util/metricsAggregator.js (2)
require(4-4)logger(3-3)src/services/piscina/wrapper.ts (2)
terminatePiscina(105-105)initializePiscina(104-104)src/routes/metricsRouter.js (1)
logger(2-2)
src/services/piscina/__tests__/wrapper.test.ts (2)
src/services/piscina/wrapper.ts (3)
terminatePiscina(105-105)initializePiscina(104-104)transformWithPiscina(106-106)src/types/destinationTransformation.ts (1)
ProcessorTransformationRequest(18-26)
src/services/piscina/wrapper.ts (3)
src/util/cluster.js (1)
logger(3-3)src/types/destinationTransformation.ts (1)
ProcessorTransformationRequest(18-26)src/types/userTransformation.ts (1)
UserTransformationServiceResponse(20-23)
🪛 Biome (1.9.4)
src/services/piscina/__tests__/wrapper.test.ts
[error] 21-21: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 22-22: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 23-23: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 24-24: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 25-25: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
🪛 GitHub Check: codecov/patch
src/controllers/userTransform.ts
[warning] 43-45: src/controllers/userTransform.ts#L43-L45
Added lines #L43 - L45 were not covered by tests
[warning] 52-53: src/controllers/userTransform.ts#L52-L53
Added lines #L52 - L53 were not covered by tests
🔇 Additional comments (12)
src/util/cluster.js (3)
7-7: The import statement for Piscina wrapper is correctly added.Clean import of the Piscina functions needed for worker initialization and termination.
17-19: Good error handling in Piscina termination.The error handling for terminating Piscina is appropriate, catching and logging errors without breaking the shutdown process.
94-94: Piscina initialization in worker process is correct.The initialization of Piscina is appropriately placed in the worker process branch, not the master process.
src/controllers/userTransform.ts (2)
13-13: Import for Piscina transformation function looks good.Clean import of the required Piscina transformation function.
52-53: Response handling is consistent with both implementation paths.The code properly handles the transformation response regardless of whether Piscina or direct transformation was used. This ensures consistent API behavior.
🧰 Tools
🪛 GitHub Check: codecov/patch
[warning] 52-53: src/controllers/userTransform.ts#L52-L53
Added lines #L52 - L53 were not covered by testssrc/services/piscina/transform.ts (2)
1-4: Imports are properly structured.Necessary imports for the worker function are correctly included.
6-16: Worker function implementation is clean and well-typed.The worker function correctly delegates to the existing
UserTransformService.transformRoutine. The TypeScript type definitions are thorough, ensuring type safety for the worker inputs and output.src/services/piscina/__tests__/wrapper.test.ts (4)
1-9: Test setup with proper mocks.Imports and mocks are correctly set up for the test suite.
34-69: Comprehensive tests for initialization logic.The initialization tests cover all expected scenarios: enabling/disabling via environment variables and configuring through environment variables. The tests verify both the creation of the Piscina instance and logging.
72-85: Termination tests handle both initialization states.The tests properly verify that termination functions correctly both when Piscina is initialized and when it isn't. Good error handling check.
87-140: Transform tests cover all expected scenarios.The transform tests thoroughly verify that the Piscina worker is correctly invoked with the expected parameters and that an error is thrown when Piscina isn't initialized. The mock events are well-structured with all required properties.
src/services/piscina/wrapper.ts (1)
1-8:Details
❓ Verification inconclusive
Add improved error handling for import failures
Consider adding try/catch around the Piscina import or having a fallback mechanism in case the module fails to load.
🏁 Script executed:
#!/bin/bash # Check if Piscina is listed as a dependency in package.json grep -A 5 "\"dependencies\"" package.json | grep "piscina" # Check if there's a fallback mechanism elsewhere in the codebase grep -r "catch.*Piscina" --include="*.ts" --include="*.js" .Length of output: 165
🏁 Script executed:
#!/bin/bash set -e echo "1. Locating package.json files (excluding node_modules)..." find . -type f -name "package.json" -not -path "*/node_modules/*" echo echo "2. Checking for Piscina in dependencies..." for pkg in $(find . -type f -name "package.json" -not -path "*/node_modules/*"); do echo "→ $pkg" grep -R "\"piscina\"" -n "$pkg" || echo " Piscina not found in dependencies of $pkg" done echo echo "3. Scanning for import statements of Piscina in .ts/.js files..." rg -n "import\s+.*Piscina" --glob "*.ts" --glob "*.js" || echo "No import statements for Piscina found." echo echo "4. Searching for try/catch blocks around Piscina usage..." rg -n -C2 "Piscina" --glob "*.ts" --glob "*.js" | grep -E "try|catch" || echo "No try/catch around Piscina usage found."Length of output: 1227
Verify Piscina dependency and import error handling
- Ensure “piscina” is listed in your project’s package.json so that
import Piscina from 'piscina'won’t fail at runtime.- Static ES imports cannot be wrapped in
try/catch.
If you need to guard against a missing or incompatible Piscina module, switch to a dynamic load inside atry/catch:let Piscina; try { Piscina = require('piscina'); } catch (error) { logger.error('Failed to load Piscina module:', error); // fallback logic or rethrow }- If Piscina is guaranteed as a mandatory dependency, no additional import‐level error handling is required—rely on the runtime to surface any startup issues.
Please verify your dependency setup and adjust the import pattern if a fallback is needed.
| let processedResponse: UserTransformationServiceResponse; | ||
| if (process.env.USE_PISCINA === 'true') { | ||
| processedResponse = await transformWithPiscina(events, ctx.state.features, requestSize); | ||
| } else { | ||
| processedResponse = await UserTransformService.transformRoutine( | ||
| events, | ||
| ctx.state.features, | ||
| requestSize, | ||
| ); | ||
| } |
There was a problem hiding this comment.
💡 Verification agent
❓ Verification inconclusive
Conditional Piscina usage is properly implemented.
The code correctly implements conditional usage of the Piscina worker pool based on the USE_PISCINA environment variable. However, the static analysis indicates these lines aren't covered by tests.
🏁 Script executed:
#!/bin/bash
# Check if there are any tests covering the conditional Piscina usage
rg -A 2 "USE_PISCINA" src/**/__tests__/*.test.tsLength of output: 456
Add unit tests for the USE_PISCINA conditional branch
The if (process.env.USE_PISCINA === 'true') { … } else { … } block in
src/controllers/userTransform.ts (lines 41–50) isn’t exercised by any existing tests. Please add tests to cover both paths:
- When
USE_PISCINA='true', mock/setprocess.env.USE_PISCINAand assert thattransformWithPiscinais invoked. - When
USE_PISCINAis unset or any other value, assert thatUserTransformService.transformRoutineis called.
Suggested test location:
• src/controllers/__tests__/userTransform.test.ts
🧰 Tools
🪛 GitHub Check: codecov/patch
[warning] 43-45: src/controllers/userTransform.ts#L43-L45
Added lines #L43 - L45 were not covered by tests
| public static initialize(): void { | ||
| const service = PiscinaService.getInstance(); | ||
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| if (process.env.USE_PISCINA !== 'true') { | ||
| logger.info('Piscina is disabled via USE_PISCINA environment variable'); | ||
| return; | ||
| } | ||
|
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||
| if (!service.isInitialized) { | ||
| const config = service.getPiscinaConfig(); | ||
| service.piscina = new Piscina({ | ||
| filename: path.resolve(__dirname, `transform${isTest ? '.ts' : '.js'}`), | ||
| execArgv: isTest ? ['-r', 'ts-node/register'] : undefined, | ||
| ...config, | ||
| }); | ||
| service.isInitialized = true; | ||
| logger.info('Piscina worker pool initialized'); | ||
| } | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add error handling during initialization
The initialization process should include try/catch to handle potential errors during Piscina instance creation.
public static initialize(): void {
const service = PiscinaService.getInstance();
if (process.env.USE_PISCINA !== 'true') {
logger.info('Piscina is disabled via USE_PISCINA environment variable');
return;
}
if (!service.isInitialized) {
const config = service.getPiscinaConfig();
+ try {
service.piscina = new Piscina({
filename: path.resolve(__dirname, `transform${isTest ? '.ts' : '.js'}`),
execArgv: isTest ? ['-r', 'ts-node/register'] : undefined,
...config,
});
service.isInitialized = true;
logger.info('Piscina worker pool initialized');
+ } catch (error) {
+ logger.error(`Failed to initialize Piscina worker pool: ${error.message}`);
+ }
}
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| public static initialize(): void { | |
| const service = PiscinaService.getInstance(); | |
| if (process.env.USE_PISCINA !== 'true') { | |
| logger.info('Piscina is disabled via USE_PISCINA environment variable'); | |
| return; | |
| } | |
| if (!service.isInitialized) { | |
| const config = service.getPiscinaConfig(); | |
| service.piscina = new Piscina({ | |
| filename: path.resolve(__dirname, `transform${isTest ? '.ts' : '.js'}`), | |
| execArgv: isTest ? ['-r', 'ts-node/register'] : undefined, | |
| ...config, | |
| }); | |
| service.isInitialized = true; | |
| logger.info('Piscina worker pool initialized'); | |
| } | |
| } | |
| public static initialize(): void { | |
| const service = PiscinaService.getInstance(); | |
| if (process.env.USE_PISCINA !== 'true') { | |
| logger.info('Piscina is disabled via USE_PISCINA environment variable'); | |
| return; | |
| } | |
| if (!service.isInitialized) { | |
| const config = service.getPiscinaConfig(); | |
| try { | |
| service.piscina = new Piscina({ | |
| filename: path.resolve(__dirname, `transform${isTest ? '.ts' : '.js'}`), | |
| execArgv: isTest ? ['-r', 'ts-node/register'] : undefined, | |
| ...config, | |
| }); | |
| service.isInitialized = true; | |
| logger.info('Piscina worker pool initialized'); | |
| } catch (error) { | |
| logger.error(`Failed to initialize Piscina worker pool: ${error.message}`); | |
| } | |
| } | |
| } |
| ControllerUtility.postProcess(ctx, processedRespone.retryStatus); | ||
|
|
||
| let processedResponse: UserTransformationServiceResponse; | ||
| if (process.env.USE_PISCINA === 'true') { |
There was a problem hiding this comment.
[question] @abhimanyubabbar @satishrudderstack does it make sense to just randomly access environment variables throughout the code? Maybe this belongs in the context? I'm not familiar with this codebase but if there is already a pattern in place for this it might make sense to follow it unless it makes things too difficult.
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Actionable comments posted: 1
🧹 Nitpick comments (1)
src/services/piscina/__tests__/wrapper.test.ts (1)
111-131: Consider adding error handling test casesWhile the current tests cover successful transformation and initialization errors, they don't verify behavior when Piscina's run method fails.
Consider adding this test to verify error handling:
it('should propagate errors from Piscina run', async () => { const mockError = new Error('Worker error'); mockPiscina.run.mockRejectedValue(mockError); initializePiscina(); await expect(transformWithPiscina(mockEvents, mockFeatures, mockRequestSize)) .rejects.toThrow('Worker error'); });
📜 Review details
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Review profile: CHILL
Plan: Pro
⛔ Files ignored due to path filters (2)
package-lock.jsonis excluded by!**/package-lock.json,!**/*.jsonpackage.jsonis excluded by!**/*.json
📒 Files selected for processing (3)
src/services/piscina/__tests__/wrapper.test.ts(1 hunks)src/services/piscina/wrapper.ts(1 hunks)src/util/cluster.js(2 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
- src/util/cluster.js
- src/services/piscina/wrapper.ts
🧰 Additional context used
🧬 Code Graph Analysis (1)
src/services/piscina/__tests__/wrapper.test.ts (3)
src/services/piscina/wrapper.ts (3)
terminatePiscina(100-100)initializePiscina(99-99)transformWithPiscina(101-101)src/util/cluster.js (1)
logger(3-3)src/types/destinationTransformation.ts (1)
ProcessorTransformationRequest(18-26)
🪛 Biome (1.9.4)
src/services/piscina/__tests__/wrapper.test.ts
[error] 21-21: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 22-22: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 23-23: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 24-24: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 25-25: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
⏰ Context from checks skipped due to timeout of 90000ms (2)
- GitHub Check: Analyze (javascript-typescript)
- GitHub Check: Analyze (go)
🔇 Additional comments (4)
src/services/piscina/__tests__/wrapper.test.ts (4)
1-9: Good use of mocking for unit testsThe imports and mock setup are well-structured, correctly isolating the test environment from actual dependencies. Mocking both Piscina and the logger ensures tests don't have external dependencies.
10-33: Test setup handles environment state appropriatelyThe test setup and teardown process is well-implemented with proper mock clearing and environment variable management. The afterEach handler correctly ensures that the Piscina instance is terminated after each test.
Regarding the static analysis warnings about using
deleteon environment variables:
- In test contexts, using
deleteis semantically correct to simulate environment variables being absent- Setting to undefined would not create the same behavior for testing purposes
🧰 Tools
🪛 Biome (1.9.4)
[error] 21-21: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 22-22: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 23-23: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 24-24: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 25-25: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
63-76: Termination tests are completeThe tests appropriately verify successful termination of initialized instances and safe handling when no instance exists. Good coverage of the terminate functionality.
78-110: Well-structured mock data for transformation testsThe mock data for the transformation tests is comprehensive and follows the expected structure for ProcessorTransformationRequest. This ensures the tests accurately represent real usage scenarios.
| describe('initialize', () => { | ||
| it('should initialize Piscina', () => { | ||
| process.env.USE_PISCINA = 'true'; | ||
| initializePiscina(); | ||
| expect(Piscina).toHaveBeenCalled(); | ||
| expect(logger.info).toHaveBeenCalledWith('Piscina worker pool initialized'); | ||
| }); | ||
|
|
||
| it('should use environment variables for configuration', () => { | ||
| process.env.PISCINA_MAX_THREADS = '4'; | ||
| process.env.PISCINA_MIN_THREADS = '2'; | ||
| process.env.PISCINA_IDLE_TIMEOUT = '5000'; | ||
| process.env.PISCINA_MAX_QUEUE = '100'; | ||
| process.env.PISCINA_CONCURRENT_TASKS_PER_WORKER = '2'; | ||
|
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| initializePiscina(); | ||
|
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| expect(Piscina).toHaveBeenCalledWith( | ||
| expect.objectContaining({ | ||
| maxThreads: 4, | ||
| minThreads: 2, | ||
| idleTimeout: 5000, | ||
| maxQueue: 100, | ||
| concurrentTasksPerWorker: 2, | ||
| }), | ||
| ); | ||
| }); | ||
| }); |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add test for when Piscina is disabled
The initialization tests verify proper initialization and configuration, but there's no test verifying the behavior when Piscina is disabled.
Consider adding this test:
it('should not initialize Piscina when USE_PISCINA is not true', () => {
process.env.USE_PISCINA = 'false';
initializePiscina();
expect(Piscina).not.toHaveBeenCalled();
process.env.USE_PISCINA = undefined;
initializePiscina();
expect(Piscina).not.toHaveBeenCalled();
});
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Actionable comments posted: 0
♻️ Duplicate comments (1)
src/services/piscina/__tests__/wrapper.test.ts (1)
32-58: Add test for when Piscina is disabledThe initialization tests verify proper initialization and configuration, but there's no test verifying the behavior when Piscina is disabled.
Consider adding this test:
it('should not initialize Piscina when USE_PISCINA is not true', () => { process.env.USE_PISCINA = 'false'; initializePiscina(); expect(Piscina).not.toHaveBeenCalled(); process.env.USE_PISCINA = undefined; initializePiscina(); expect(Piscina).not.toHaveBeenCalled(); });
🧹 Nitpick comments (2)
src/services/piscina/__tests__/wrapper.test.ts (2)
16-24: Consider using undefined assignment instead of delete for environment variablesThe
deleteoperator on process.env properties can have performance implications, even in test code. While this isn't critical for tests, it's a good practice to use undefined assignment instead.- delete process.env.PISCINA_MAX_THREADS; - delete process.env.PISCINA_MIN_THREADS; - delete process.env.PISCINA_IDLE_TIMEOUT; - delete process.env.PISCINA_MAX_QUEUE; - delete process.env.PISCINA_CONCURRENT_TASKS_PER_WORKER; + process.env.PISCINA_MAX_THREADS = undefined; + process.env.PISCINA_MIN_THREADS = undefined; + process.env.PISCINA_IDLE_TIMEOUT = undefined; + process.env.PISCINA_MAX_QUEUE = undefined; + process.env.PISCINA_CONCURRENT_TASKS_PER_WORKER = undefined;🧰 Tools
🪛 Biome (1.9.4)
[error] 19-19: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 20-20: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 21-21: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 22-22: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 23-23: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
39-57: Consider testing with invalid environment variable valuesThe test verifies that environment variables are correctly used for configuration, but doesn't test the handling of invalid values (non-numeric strings, negative values, etc.).
Consider adding cases to test robustness against invalid input:
it('should handle invalid environment variable values', () => { process.env.PISCINA_MAX_THREADS = 'not-a-number'; process.env.PISCINA_MIN_THREADS = '-1'; initializePiscina(); // Verify fallback to defaults or handling of invalid values expect(Piscina).toHaveBeenCalledWith( expect.objectContaining({ // Expected fallback values }), ); });
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src/services/piscina/__tests__/wrapper.test.ts(1 hunks)
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🧬 Code Graph Analysis (1)
src/services/piscina/__tests__/wrapper.test.ts (3)
src/services/piscina/wrapper.ts (3)
terminatePiscina(100-100)initializePiscina(99-99)transformWithPiscina(101-101)src/util/cluster.js (1)
logger(3-3)src/types/destinationTransformation.ts (1)
ProcessorTransformationRequest(18-26)
🪛 Biome (1.9.4)
src/services/piscina/__tests__/wrapper.test.ts
[error] 19-19: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 20-20: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 21-21: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 22-22: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
[error] 23-23: Avoid the delete operator which can impact performance.
Unsafe fix: Use an undefined assignment instead.
(lint/performance/noDelete)
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🔇 Additional comments (3)
src/services/piscina/__tests__/wrapper.test.ts (3)
74-105: LGTM! Comprehensive test data setupThe mock data is well-structured and provides a good test case for the transformation functionality. The test data follows the expected type structure and includes all relevant fields.
107-120: LGTM! Thorough verification of transform behaviorThe test properly verifies that the Piscina worker is called with the correct parameters and that the result is correctly returned.
122-126: LGTM! Proper error handling testGood job testing the error case when transformation is attempted without initialization. This verifies the defensive programming approach in the service.
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| const mockFeatures = { enabled: true }; | ||
| const mockRequestSize = 1; | ||
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| it('should call Piscina run with correct parameters', async () => { |
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Can we have a more complete test where we instantiate the PiscinaService and run an actual transformation?
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Actionable comments posted: 0
♻️ Duplicate comments (1)
src/services/piscina/wrapper.ts (1)
66-82:⚠️ Potential issueAdd USE_PISCINA environment check and error handling.
According to the PR description, initialization should be controlled by the USE_PISCINA environment variable. Also, there's no error handling for Piscina instantiation as suggested in a previous review.
public static initialize(): void { const service = PiscinaService.getInstance(); + if (process.env.USE_PISCINA !== 'true') { + logger.info('Piscina is disabled via USE_PISCINA environment variable'); + return; + } if (!service.isInitialized) { const config = service.getPiscinaConfig(); + try { service.piscina = new Piscina({ filename: path.resolve(__dirname, `transform${isTest ? '.ts' : '.js'}`), execArgv: isTest ? ['-r', 'ts-node/register'] : undefined, ...config, }); service.isInitialized = true; logger.info('Piscina worker pool initialized'); // Start collecting Piscina metrics service.startMetricsCollection(); + } catch (error) { + logger.error(`Failed to initialize Piscina worker pool: ${error.message}`); + } } }
🧹 Nitpick comments (2)
src/services/piscina/wrapper.ts (2)
34-57: Add input validation for environment variables.The code parses environment variables without validation. Consider adding validation to ensure the parsed values are positive numbers and handle potential parsing errors.
private getPiscinaConfig(): PiscinaConfig { const config: PiscinaConfig = {}; if (process.env.PISCINA_MAX_THREADS) { - config.maxThreads = parseInt(process.env.PISCINA_MAX_THREADS, 10); + const maxThreads = parseInt(process.env.PISCINA_MAX_THREADS, 10); + if (!isNaN(maxThreads) && maxThreads > 0) { + config.maxThreads = maxThreads; + } else { + logger.warn(`Invalid PISCINA_MAX_THREADS value: ${process.env.PISCINA_MAX_THREADS}, using default`); + } } // Similar validation for other configuration options
122-130: Consider adding error handling for transformation failures.The transform method could benefit from try-catch error handling to gracefully handle failures during worker execution.
public static async transform( events: ProcessorTransformationRequest[], features: FeatureFlags, requestSize: number, ): Promise<UserTransformationServiceResponse> { const service = PiscinaService.getInstance(); - return service.getPiscinaInstance().run({ events, features, requestSize }); + try { + return await service.getPiscinaInstance().run({ events, features, requestSize }); + } catch (error) { + logger.error(`Error in Piscina worker transformation: ${error.message}`); + throw error; + } }
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📒 Files selected for processing (2)
src/services/piscina/wrapper.ts(1 hunks)src/util/prometheus.js(1 hunks)
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🧬 Code Graph Analysis (1)
src/services/piscina/wrapper.ts (4)
src/util/cluster.js (1)
logger(3-3)src/util/prometheus.js (1)
logger(2-2)src/types/destinationTransformation.ts (1)
ProcessorTransformationRequest(18-26)src/types/userTransformation.ts (1)
UserTransformationServiceResponse(20-23)
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🔇 Additional comments (7)
src/services/piscina/wrapper.ts (7)
1-7: The imports look appropriate for the functionality.The necessary dependencies are properly imported, including Piscina, path utilities, type definitions, feature flags, logging, and stats collection.
10-16: Well-structured type definition for PiscinaConfig.The type definition clearly specifies all the configurable parameters for the Piscina worker pool, making the code more maintainable and type-safe.
18-32: Singleton pattern is correctly implemented.The class properly implements the singleton pattern with a private static instance and a getInstance method, ensuring only one PiscinaService instance exists throughout the application lifecycle.
59-64: Good error handling for uninitialized Piscina instance.The getPiscinaInstance method correctly checks if Piscina is initialized before returning the instance, preventing potential null reference errors.
84-104: Well-implemented metrics collection with proper error handling.The metrics collection logic properly handles the case when there's no Piscina instance, clears existing intervals, and uses try-catch for error handling. The collection interval of 5 seconds seems reasonable.
106-120: Comprehensive termination logic.The terminate method correctly cleans up all resources: clears the metrics interval, destroys the Piscina instance, and resets state variables. The logging helps with observability.
132-134: Clean API exports.Exporting named functions that delegate to the static methods provides a clean API for external modules to use while maintaining encapsulation of the singleton instance.
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This PR is considered to be stale. It has been open for 20 days with no further activity thus it is going to be closed in 7 days. To avoid such a case please consider removing the stale label manually or add a comment to the PR. |
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This PR is considered to be stale. It has been open for 20 days with no further activity thus it is going to be closed in 7 days. To avoid such a case please consider removing the stale label manually or add a comment to the PR. |
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This PR is considered to be stale. It has been open for 20 days with no further activity thus it is going to be closed in 7 days. To avoid such a case please consider removing the stale label manually or add a comment to the PR. |
4 participants
We are evaluating Piscina workers for User Transformations(
/customTransformpath). The PR has the following changesinitialize()- Initializes the single instance of Piscina on Server startupterminate()- Cleans up the instance of Piscina on Server shutdowntransform()- Actual transformation via Piscina worker.jsfilename to Piscina on production and dev but for tests we are loading the.tsfile because we are running tests directly on typescript filesWhat is the related Linear task?
Resolves DAW-1090
Please explain the objectives of your changes below
Put down any required details on the broader aspect of your changes. If there are any dependent changes, mandatorily mention them here
Any changes to existing capabilities/behaviour, mention the reason & what are the changes ?
N/A
Any new dependencies introduced with this change?
N/A
Any new generic utility introduced or modified. Please explain the changes.
N/A
Any technical or performance related pointers to consider with the change?
N/A
@coderabbitai review
Developer checklist
My code follows the style guidelines of this project
No breaking changes are being introduced.
All related docs linked with the PR?
All changes manually tested?
Any documentation changes needed with this change?
Is the PR limited to 10 file changes?
Is the PR limited to one linear task?
Are relevant unit and component test-cases added in new readability format?
Reviewer checklist
Is the type of change in the PR title appropriate as per the changes?
Verified that there are no credentials or confidential data exposed with the changes.