interchainquery

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 Go to latest Published: Feb 22, 2023 License: Apache-2.0, Apache-2.0 Imports: 18 Imported by: 0

README

title: "Interchainquery" excerpt: "" category: 6392913957c533007128548e

Interchain Query

Abstract

Stride uses interchain queries and interchain accounts to perform multichain liquid staking. The interchainquery module creates a framework that allows other modules to query other appchains using IBC. The interchainquery module is used to make bank balance ICQ queries to withdrawal account every N. The callback triggers ICA bank sends for 90% of the rewards to the delegation account and 10% to the stride hostzone revenue account. The ICA bank send logic is in x/stakeibc/keeper/callbacks.go.

Contents

  1. Concepts
  2. State
  3. Events
  4. Keeper
  5. Msgs
  6. Queries

State

The interchainquery module keeps Query objects and modifies the information from query to query, as defined in proto/interchainquery/v1/genesis.proto

InterchainQuery information type

Query has information types that pertain to the query itself. Query keeps the following:

  1. id keeps the query identification string.
  2. connection_id keeps the id of the connection between the controller and host chain.
  3. chain_id keeps the id of the queried chain.
  4. query_type keeps the type of interchain query (e.g. bank store query)
  5. request keeps an bytecode encoded version of the interchain query
  6. callback_id keeps the function that will be called by the interchain query
  7. ttl time at which the query expires (in unix nano)
  8. request_sent keeps a boolean indicating whether the query event has been emitted (and can be identified by a relayer)

DataPoint has information types that pertain to the data that is queried. DataPoint keeps the following:

  1. id keeps the identification string of the datapoint
  2. remote_height keeps the block height of the queried chain
  3. local_height keeps the block height of the querying chain
  4. value keeps the bytecode value of the data retrieved by the Query

Events

The interchainquery module emits an event at the end of every stride_epochs (e.g. 15 minutes on local testnet).

The purpose of this event is to send interchainqueries that query data about staking rewards, which Stride uses to reinvest (aka autocompound) staking rewards.

   event := sdk.NewEvent(
    sdk.EventTypeMessage,
    sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
    sdk.NewAttribute(sdk.AttributeKeyAction, types.AttributeValueQuery),
    sdk.NewAttribute(types.AttributeKeyQueryId, queryInfo.Id),
    sdk.NewAttribute(types.AttributeKeyChainId, queryInfo.ChainId),
    sdk.NewAttribute(types.AttributeKeyConnectionId, queryInfo.ConnectionId),
    sdk.NewAttribute(types.AttributeKeyType, queryInfo.QueryType),
    sdk.NewAttribute(types.AttributeKeyHeight, "0"),
    sdk.NewAttribute(types.AttributeKeyRequest, hex.EncodeToString(queryInfo.Request)),
   )

Keeper

Keeper Functions

interchainquery/keeper/ module provides utility functions to manage ICQs

// GetQuery returns query
GetQuery(ctx sdk.Context, id string) (types.Query, bool)
// SetQuery set query info
SetQuery(ctx sdk.Context, query types.Query)
// DeleteQuery delete query info
DeleteQuery(ctx sdk.Context, id string)
// IterateQueries iterate through queries
IterateQueries(ctx sdk.Context, fn func(index int64, queryInfo types.Query) (stop bool))
// AllQueries returns every queryInfo in the store
AllQueries(ctx sdk.Context) []types.Query

Msgs

// SubmitQueryResponse is used to return the query response back to Stride
message MsgSubmitQueryResponse {
  string chain_id = 1;
  string query_id = 2;
  bytes result = 3;
  tendermint.crypto.ProofOps proof_ops = 4;
  int64 height = 5;
  string from_address = 6;
}

Queries

// Query PendingQueries lists all queries that have been requested (i.e. emitted)
//  but have not had a response submitted yet
message QueryPendingQueriesRequest {}

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ExportGenesis 

func ExportGenesis(ctx sdk.Context, k keeper.Keeper) *types.GenesisState

ExportGenesis returns the capability module's exported genesis.

func InitGenesis 

func InitGenesis(ctx sdk.Context, k keeper.Keeper, genState types.GenesisState)

InitGenesis initializes the capability module's state from a provided genesis state.

func NewHandler 

func NewHandler(k keeper.Keeper) sdk.Handler

NewHandler returns a handler for interchainquery module messages

Types

type AppModule 

type AppModule struct {
	AppModuleBasic
	// contains filtered or unexported fields
}

AppModule implements the AppModule interface for the capability module.

func NewAppModule 

func NewAppModule(cdc codec.Codec, keeper keeper.Keeper) AppModule

NewAppModule return a new AppModule

func (AppModule) BeginBlock 

func (am AppModule) BeginBlock(ctx sdk.Context, _ abci.RequestBeginBlock)

BeginBlock executes all ABCI BeginBlock logic respective to the capability module.

func (AppModule) ConsensusVersion 

func (AppModule) ConsensusVersion() uint64

ConsensusVersion implements AppModule/ConsensusVersion.

func (AppModule) EndBlock 

func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate

EndBlock executes all ABCI EndBlock logic respective to the capability module. It returns no validator updates.

func (AppModule) ExportGenesis 

func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.RawMessage

ExportGenesis returns the capability module's exported genesis state as raw JSON bytes.

func (AppModule) GenerateGenesisState 

func (AppModule) GenerateGenesisState(simState *module.SimulationState)

GenerateGenesisState creates a randomized GenState of the pool-incentives module.

func (AppModule) InitGenesis 

func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, gs json.RawMessage) []abci.ValidatorUpdate

InitGenesis performs the capability module's genesis initialization It returns no validator updates.

func (AppModule) LegacyQuerierHandler 

func (am AppModule) LegacyQuerierHandler(legacyQuerierCdc *codec.LegacyAmino) sdk.Querier

LegacyQuerierHandler returns the capability module's Querier.

func (AppModule) Name 

func (am AppModule) Name() string

Name returns the capability module's name.

func (AppModule) ProposalContents 

func (AppModule) ProposalContents(simState module.SimulationState) []simtypes.WeightedProposalContent

ProposalContents doesn't return any content functions for governance proposals.

func (AppModule) QuerierRoute 

func (AppModule) QuerierRoute() string

QuerierRoute returns the capability module's query routing key.

func (AppModule) RandomizedParams 

func (AppModule) RandomizedParams(r *rand.Rand) []simtypes.ParamChange

RandomizedParams creates randomized pool-incentives param changes for the simulator.

func (AppModule) RegisterInvariants 

func (am AppModule) RegisterInvariants(_ sdk.InvariantRegistry)

RegisterInvariants registers the capability module's invariants.

func (AppModule) RegisterServices 

func (am AppModule) RegisterServices(cfg module.Configurator)

RegisterServices registers a GRPC query service to respond to the module-specific GRPC queries.

func (AppModule) RegisterStoreDecoder 

func (am AppModule) RegisterStoreDecoder(sdr sdk.StoreDecoderRegistry)

RegisterStoreDecoder registers a decoder for supply module's types

func (AppModule) Route 

func (am AppModule) Route() sdk.Route

Route returns the capability module's message routing key.

func (AppModule) WeightedOperations 

func (am AppModule) WeightedOperations(simState module.SimulationState) []simtypes.WeightedOperation

WeightedOperations returns the all the gov module operations with their respective weights.

type AppModuleBasic 

type AppModuleBasic struct {
	// contains filtered or unexported fields
}

AppModuleBasic implements the AppModuleBasic interface for the capability module.

func NewAppModuleBasic 

func NewAppModuleBasic(cdc codec.Codec) AppModuleBasic

NewAppModuleBasic return a new AppModuleBasic

func (AppModuleBasic) DefaultGenesis 

func (AppModuleBasic) DefaultGenesis(cdc codec.JSONCodec) json.RawMessage

DefaultGenesis returns the capability module's default genesis state.

func (AppModuleBasic) GetQueryCmd 

func (AppModuleBasic) GetQueryCmd() *cobra.Command

GetQueryCmd returns the capability module's root query command.

func (AppModuleBasic) GetTxCmd 

func (a AppModuleBasic) GetTxCmd() *cobra.Command

GetTxCmd returns the capability module's root tx command.

func (AppModuleBasic) Name 

func (AppModuleBasic) Name() string

Name returns the capability module's name.

func (AppModuleBasic) RegisterCodec 

func (AppModuleBasic) RegisterCodec(cdc *codec.LegacyAmino)

RegisterCodec registers a legacy amino codec

func (AppModuleBasic) RegisterGRPCGatewayRoutes 

func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux)

RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the module.

func (AppModuleBasic) RegisterInterfaces 

func (a AppModuleBasic) RegisterInterfaces(reg cdctypes.InterfaceRegistry)

RegisterInterfaces registers the module's interface types

func (AppModuleBasic) RegisterLegacyAminoCodec 

func (AppModuleBasic) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino)

RegisterLegacyAminoCodec registers a legacy amino codec

func (AppModuleBasic) RegisterRESTRoutes 

func (AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router)

RegisterRESTRoutes registers the capability module's REST service handlers.

func (AppModuleBasic) ValidateGenesis 

func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncodingConfig, bz json.RawMessage) error

ValidateGenesis performs genesis state validation for the capability module.

Source Files

View all Source files

Directories

Path Synopsis
client
cli
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