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* docs: updated CHANGELOG.md * docs: ran 'npm run docusaurus docs:version v0.20.0' * Revert "docs: ran 'npm run docusaurus docs:version v0.20.0'" This reverts commit 046a860. * docs: ran 'npm run docusaurus docs:version v0.20.x' * docs: changed default version * docs: bumped docusaurus to v3.5.1
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--- | ||
title: Introduction | ||
sidebar_label: Introduction | ||
sidebar_position: 0 | ||
slug: / | ||
--- | ||
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import HighlightTag from '@site/src/components/HighlightTag'; | ||
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# CosmWasm ICA Controller | ||
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<HighlightTag type="concepts"/><HighlightTag type="basics"/> | ||
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Welcome to the documentation for CosmWasm Interchain Accounts Controller. This document will guide you through | ||
understanding the [ICS-27](https://github.com/cosmos/ibc/tree/main/spec/app/ics-027-interchain-accounts) | ||
Interchain Accounts protocol and how to use `cw-ica-controller` to create and manage interchain accounts on | ||
any IBC enabled CosmWasm chain. | ||
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The CosmWasm ICA Controller is a CosmWasm contract that implements the ICS-27 interchain accounts controller in | ||
pure Rust. It is designed to be used by other CosmWasm contracts to create and manage interchain accounts on | ||
the chain where the contract is deployed. | ||
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## High Level Overview | ||
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The following diagram shows how `cw-ica-controller` works at a high level. | ||
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![High Level Overview](/img/cw-ica-controller.svg) | ||
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The `cw-ica-controller` contract code is deployed on a chain that supports IBC CosmWasm. This chain does not need | ||
to support ICS-27 interchain accounts nor does it need to support any custom IBC bindings. Then when an external | ||
account or a contract instantiates a `cw-ica-controller` contract, the contract will initiate the ICS-27 handshake | ||
with a chain that supports ICS-27 interchain accounts based on the options provided by the caller. | ||
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:::note | ||
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The counterparty chain need not be a CosmWasm chain. It can be any chain that uses ibc-go and supports `ICS-27`. | ||
Such as CosmosHub, Osmosis, etc. | ||
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::: | ||
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Then the rest of the ICS-27 handshake is completed by the relayers automatically. Both the hermes relayer and the | ||
go relayer support `ICS-27` interchain accounts. Once the handshake is complete, the `cw-ica-controller` contract | ||
makes a callback to the callback contract if one was provided during instantiation. |
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docs/versioned_docs/version-v0.20.x/contract-api/00-intro.mdx
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--- | ||
title: Contract API | ||
sidebar_label: Overview | ||
sidebar_position: 0 | ||
slug: /contract-api/intro | ||
--- | ||
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import HighlightTag from '@site/src/components/HighlightTag'; | ||
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# Contract API | ||
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<HighlightTag type="developer"/> | ||
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In this section we will cover how to interact with the contract and design decisions that were made. A full integration guide is work in progress. | ||
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In this section, we cover the following topics: | ||
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- ✉️ [`InstantiateMsg`](./01-instantiate-msg.mdx) | ||
- 📨 [`ExecuteMsg`](./02-execute-msg.mdx) | ||
- 🤔 [`QueryMsg`](./03-query-msg.mdx) | ||
- 🤙 [Callbacks](./04-callbacks.mdx) | ||
- 📜 [Events](./05-events.mdx) |
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docs/versioned_docs/version-v0.20.x/contract-api/01-instantiate-msg.mdx
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--- | ||
title: InstantiateMsg | ||
sidebar_label: InstantiateMsg | ||
sidebar_position: 1 | ||
slug: /contract-api/instantiate-msg | ||
--- | ||
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# `InstantiateMsg` | ||
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The `InstantiateMsg` is the message that is used to instantiate the `cw-ica-controller` contract. | ||
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```rust reference | ||
https://github.com/srdtrk/cw-ica-controller/blob/v0.5.0/src/types/msg.rs#L8-L21 | ||
``` | ||
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## Fields | ||
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### `owner` | ||
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This contract has an owner who is allowed to call the `ExecuteMsg` methods. | ||
The owner management is handled by the amazing [cw-ownable](https://crates.io/crates/cw-ownable) crate. | ||
If left empty, the owner is set to the sender of the `InstantiateMsg`. | ||
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### `channel_open_init_options` | ||
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```rust reference | ||
https://github.com/srdtrk/cw-ica-controller/blob/6843b80b29af97b9c4561ad487420e2f54857553/src/types/msg.rs#L95-L107 | ||
``` | ||
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These are the options required for the contract to initiate an ICS-27 channel open handshake. | ||
This contract requires there to be an IBC connection between the two chains before it can open a channel. | ||
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#### `connection_id` | ||
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The identifier of the IBC connection end on the deployed (source) chain. (The underlying IBC light client must | ||
be live.) If this field is set to a non-existent connection, the execution of the `InstantiateMsg` will fail. | ||
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#### `counterparty_connection_id` | ||
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The identifier of the IBC connection end on the counterparty (destination) chain. (The underlying IBC light | ||
client must be live.) If this field is set to a non-existent connection or a different connection's end, | ||
then the execution of the `InstantiateMsg` will not fail. This is because the source chain does not know | ||
about the counterparty chain's connections. Instead, the channel open handshake will fail to complete. | ||
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If the contract was instantiated with a `counterparty_connection_id` that does not match the connection | ||
end on the counterparty chain, then the owner must call [`ExecuteMsg::CreateChannel`](./02-execute-msg.mdx#createchannel) with the correct parameters to start a new channel open handshake. | ||
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#### `counterparty_port_id` | ||
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This is a required parameter for the ICS-27 channel version metadata. I've added it here for consistency. | ||
Currently, the only supported value is `icahost`. If left empty, it is set to `icahost`. | ||
**So you should ignore this field.** | ||
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### `send_callbacks_to` | ||
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This is the address of the contract that will receive the callbacks from the `cw-ica-controller` contract. | ||
This may be the same address as the `owner` or a different address. If left empty, no callbacks will be sent. | ||
Learn more about callbacks [here](./04-callbacks.mdx). |
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--- | ||
title: ExecuteMsg | ||
sidebar_label: ExecuteMsg | ||
sidebar_position: 2 | ||
slug: /contract-api/execute-msg | ||
--- | ||
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# `ExecuteMsg` | ||
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The `ExecuteMsg` is the message that is used to interact with the `cw-ica-controller` contract. | ||
**All execute messages are only callable by the owner of the contract.** | ||
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## `CreateChannel` | ||
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```rust reference | ||
https://github.com/srdtrk/cw-ica-controller/blob/7773fbd8d4e227b6c942f0c88575f9800809b4bf/src/types/msg.rs#L29-L39 | ||
``` | ||
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This message is used to initiate an ICS-27 channel open handshake. It is only callable by the owner. | ||
This message only takes one optional parameter: `channel_open_init_options`. | ||
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If this parameter is left empty, then the contract will use the `channel_open_init_options` that were last | ||
passed to the `InstantiateMsg` or `CreateChannel` messages. | ||
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If this parameter is set, then the contract will use the `channel_open_init_options` that are passed to this | ||
message and save them for future `CreateChannel` messages. | ||
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## `CloseChannel` | ||
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```rust reference | ||
https://github.com/srdtrk/cw-ica-controller/blob/7773fbd8d4e227b6c942f0c88575f9800809b4bf/src/types/msg.rs#L40-L41 | ||
``` | ||
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This message is used to close the ICS-27 channel. It is only callable by the owner. | ||
The channel can then be reopened with parameters (e.g. channel ordering and version) that are different from the | ||
original channel open handshake. | ||
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## `SendCosmosMsgs` | ||
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```rust reference | ||
https://github.com/srdtrk/cw-ica-controller/blob/7773fbd8d4e227b6c942f0c88575f9800809b4bf/src/types/msg.rs#L42-L64 | ||
``` | ||
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Once an ICS-27 channel open handshake is complete, the owner can control the interchain account on the counterparty | ||
chain. To give the owner a familiar interface, this message allows the owner to take actions with the interchain | ||
account using `CosmosMsg`s. This is the recommended way to use the interchain account. We will go over the fields of | ||
this message in detail. | ||
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### `messages` | ||
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This is a list of `CosmosMsg`s that the contract will execute on the counterparty chain using the interchain account. | ||
This execution is atomic. If any of the `CosmosMsg`s fail, then the entire execution will fail. | ||
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:::note | ||
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All applicable `CosmosMsg`s are supported if the channel was opened with `tx_encoding` set to `proto3`. | ||
The `proto3json` encoding is not supported by this contract anymore. | ||
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| **CosmosMsg** | **Supported** | | ||
|:------------------------------------------:|:-------------:| | ||
| `Stargate` | ✅ | | ||
| `BankMsg::Send` | ✅ | | ||
| `BankMsg::Burn` | ❌ | | ||
| `IbcMsg::Transfer` | ✅ | | ||
| `IbcMsg::SendPacket` | N/A | | ||
| `IbcMsg::CloseChannel` | N/A | | ||
| `WasmMsg::*` | ✅ | | ||
| `GovMsg::*` | ✅ | | ||
| `StakingMsg::Delegate` | ✅ | | ||
| `StakingMsg::*` | 🟢 | | ||
| `DistributionMsg::WithdrawDelegatorReward` | 🟢 | | ||
| `DistributionMsg::*` | ✅ | | ||
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Note that `🟢` means that the `CosmosMsg` is supported but not tested in the contract's test suite. | ||
These will be tested in the future. | ||
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::: | ||
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### `queries` | ||
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This is a list of `QueryRequest`s that the contract will execute on the counterparty chain using the interchain account. | ||
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:::warning | ||
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This feature only works if the host (counterparty) chain is on ibc-go v7.5+. If the host chain is on an older version, then the packet will return an error acknowledgement. | ||
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::: | ||
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:::info | ||
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If both `messages` and `queries` are provided, then the `messages` will be executed first. If the `messages` are successful, then the `queries` will be executed. If any of the `queries` fail, then the entire execution will fail. | ||
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::: | ||
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:::note | ||
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In CosmosSDK, query execution is not generally deterministic. This is the main reason why not all query requests are supported. The supported query requests are: | ||
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| **QueryRequest** | **Supported** | | ||
|:-------------------------:|:-------------:| | ||
| `BankQuery` | ✅ | | ||
| `Stargate` | ✅ | | ||
| `WasmQuery::Smart` | ✅ | | ||
| `WasmQuery::Raw` | ✅ | | ||
| `WasmQuery::ContractInfo` | ✅ | | ||
| `WasmQuery::CodeInfo` | ❌ | | ||
| `IbcQuery` | ❌ | | ||
| `DistributionQuery` | ❌ | | ||
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Note that not all Stargate queries are supported. Only queries which are marked with [`module_query_safe`](https://github.com/cosmos/cosmos-sdk/blob/27a231ae4816fd8c3ee39a1cc02eccf977fb1b79/proto/cosmos/query/v1/query.proto#L36) tag are supported. You can find a list of supported queries in the [ibc-go documentation](https://ibc.cosmos.network/main/apps/interchain-accounts/messages/#queries) for different versions of ibc-go. | ||
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Note that `WasmQuery` support works only if the counterparty chain is using wasmd `v0.52+`. Moreover, governance queries (as stargate queries) and `DistributionQuery` will be supported in the next version of the SDK. | ||
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::: | ||
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### `packet_memo` | ||
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This is the IBC packet memo that will be included in the ICS-27 packet. It is optional and defaults to `""`. | ||
Additionally, the memo field is used by some IBC middleware to execute custom logic on the counterparty chain. | ||
But most of these middlewares do not yet support ICS-27 channels. | ||
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### `timeout_seconds` | ||
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This is the timeout in seconds that will be used for the ICS-27 packet. It is optional and defaults to [`DEFAULT_TIMEOUT_SECONDS`](https://github.com/srdtrk/cw-ica-controller/blob/v0.5.0/src/ibc/types/packet.rs#L15-L16). | ||
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## `UpdateCallbackAddress` | ||
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```rust reference | ||
https://github.com/srdtrk/cw-ica-controller/blob/v0.5.0/src/types/msg.rs#L92-L97 | ||
``` | ||
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This message is used to update the contract address that this contract will send callbacks to. | ||
This is useful if the owner wants to change the contract that receives the callbacks. | ||
If set to `None`, then no callbacks will be sent. | ||
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## `UpdateOwnership` | ||
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```rust reference | ||
https://github.com/larry0x/cw-plus-plus/blob/ownable-v0.5.0/packages/ownable/derive/src/lib.rs#L86-L90 | ||
``` | ||
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This message type is provided by the [cw-ownable](https://crates.io/crates/cw-ownable) crate. It wraps a | ||
`cw_ownable::Action` enum. | ||
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```rust reference | ||
https://github.com/larry0x/cw-plus-plus/blob/ownable-v0.5.0/packages/ownable/src/lib.rs#L31-L57 | ||
``` | ||
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The owner can propose to transfer the ownership of the contract to a new address using `Action::TransferOwnership` and | ||
set and expiry time for the proposal. If the proposal is accepted before the expiry time through | ||
`Action::AcceptOwnership`, then the ownership of the contract is transferred to the new address. | ||
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You can learn more about `cw-ownable` in its crate documentation. |
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