Add cosmos.directory integration for chain parameters#65
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Have reviewed the code and tested it locally. Fixed some json data structure issues and improved logging, and the logic of using this fallback to calculate the APR.
Implement cosmos.directory support to automatically fetch chain parameters (denom metadata, APR, slashing params) and provide RPC fallback. This feature works orthogonally with any provider (default, namada, etc.) and requires only a new 'chain_name' config field. If not set, defaults to lowercase of the chain display name. Key changes: - Add 'chain_name' config field to ChainConfig - Add cosmos.directory data types and API fetching with 10s timeout and 30m caching - Use cosmos.directory as fallback for denom metadata (after ABCI query fails) - Use cosmos.directory as fallback for APR/chain info (after ABCI query fails) - Automatically try cosmos.directory RPC proxy when configured nodes fail - Updated example config with chain_name documentation Co-Authored-By: Claude Haiku 4.5 <[email protected]>
Add non-negative check before converting int exponent to uint32 to prevent potential integer overflow when processing cosmos.directory denom units. Co-Authored-By: Claude Opus 4.5 <[email protected]>
Summary of Changes
td2/chain-details.go
1. Added wrapper struct to properly unmarshal the nested API response:
type CosmosDirectoryResponse struct {
Chain CosmosDirectoryChainData `json:"chain"`
}
2. Simplified CosmosDirectoryChainData - removed fields that are actually
in params
3. Expanded CDParams to include all top-level params fields:
- authz, actual_block_time, actual_blocks_per_year,
current_block_height
- unbonding_time, max_validators, community_tax
- bonded_tokens, annual_provision, estimated_apr, calculated_apr
4. Added CDAssetDenomInfo struct and fixed CDAsset to use proper types:
type CDAssetDenomInfo struct {
Denom string `json:"denom"`
Exponent int `json:"exponent"`
}
5. Updated fetchCosmosDirectoryChainData to unmarshal into wrapper then
extract chain data
6. Fixed getChainInfoFromCosmosDirectory - removed totalSupply (not in
API), fixed field access paths
7. Fixed getDenomMetadataFromCosmosDirectory and
getBankMetadataFromCosmosDirectory** to use asset.Base.Denom and
asset.Display.Denom
td2/validator.go
Updated the caller of getChainInfoFromCosmosDirectory to match the new
signature (removed totalSupply return value).
Signed-off-by: Long Zhang <[email protected]>
Signed-off-by: Long Zhang <[email protected]>
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Summary
Implement cosmos.directory integration to automatically fetch chain parameters (denom metadata, APR, slashing params) and provide RPC fallback. This feature works orthogonally with any provider and requires only a new 'chain_name' config field.
Changes
chain_nameconfig field (defaults to lowercase of chain display name)Testing
go build ./...✅go test ./...✅chain_nameuse existing behavior🤖 Generated with Claude Code