wasm

package
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 Go to latest Published: Jan 27, 2021 License: Apache-2.0 Imports: 23 Imported by: 0

README

Wasm Module

This should be a brief overview of the functionality

Configuration

You can add the following section to config/app.toml:

[wasm]
# This is the maximum sdk gas (wasm and storage) that we allow for any x/wasm "smart" queries
query_gas_limit = 300000
# This defines the memory size for Wasm modules that we can keep cached to speed-up instantiation
# The value is in MiB not bytes
memory_cache_size = 300

The values can also be set via CLI flags on with the start command:

--wasm.memory_cache_size uint32     Sets the size in MiB (NOT bytes) of an in-memory cache for wasm modules. Set to 0 to disable. (default 100)
--wasm.query_gas_limit uint         Set the max gas that can be spent on executing a query with a Wasm contract (default 3000000)

Events

A number of events are returned to allow good indexing of the transactions from smart contracts.

Every call to Instantiate or Execute will be tagged with the info on the contract that was executed and who executed it. It should look something like this (with different addresses). The module is always wasm, and code_id is only present when Instantiating a contract, so you can subscribe to new instances, it is omitted on Execute. There is also an action tag which is auto-added by the Cosmos SDK and has a value of either store-code, instantiate or execute depending on which message was sent:

{
    "Type": "message",
    "Attr": [
        {
            "key": "module",
            "value": "wasm"
        },
        {
            "key": "action",
            "value": "instantiate"
        },
        {
            "key": "signer",
            "value": "cosmos1vx8knpllrj7n963p9ttd80w47kpacrhuts497x"
        },
        {
            "key": "code_id",
            "value": "1"
        },
        {
            "key": "contract_address",
            "value": "cosmos18vd8fpwxzck93qlwghaj6arh4p7c5n89uzcee5"
        }
    ]
}

If any funds were transferred to the contract as part of the message, or if the contract released funds as part of it's executions, it will receive the typical events associated with sending tokens from bank. In this case, we instantiate the contract and provide a initial balance in the same MsgInstantiateContract. We see the following events in addition to the above one:

[
    {
        "Type": "transfer",
        "Attr": [
            {
                "key": "recipient",
                "value": "cosmos18vd8fpwxzck93qlwghaj6arh4p7c5n89uzcee5"
            },
            {
                "key": "sender",
                "value": "cosmos1ffnqn02ft2psvyv4dyr56nnv6plllf9pm2kpmv"
            },
            {
                "key": "amount",
                "value": "100000denom"
            }
        ]
    }
]

Finally, the contract itself can emit a "custom event" on Execute only (not on Init). There is one event per contract, so if one contract calls a second contract, you may receive one event for the original contract and one for the re-invoked contract. All attributes from the contract are passed through verbatim, and we add a contract_address attribute that contains the actual contract that emitted that event. Here is an example from the escrow contract successfully releasing funds to the destination address:

{
    "Type": "wasm",
    "Attr": [
        {
            "key": "contract_address",
            "value": "cosmos18vd8fpwxzck93qlwghaj6arh4p7c5n89uzcee5"
        },
        {
            "key": "action",
            "value": "release"
        },
        {
            "key": "destination",
            "value": "cosmos14k7v7ms4jxkk2etmg9gljxjm4ru3qjdugfsflq"
        }
    ]
}
Pulling this all together

We will invoke an escrow contract to release to the designated beneficiary. The escrow was previously loaded with 100000denom (from the above example). In this transaction, we send 5000denom along with the MsgExecuteContract and the contract releases the entire funds (105000denom) to the beneficiary.

We will see all the following events, where you should be able to reconstruct the actions (remember there are two events for each transfer). We see (1) the initial transfer of funds to the contract, (2) the contract custom event that it released funds (3) the transfer of funds from the contract to the beneficiary and (4) the generic x/wasm event stating that the contract was executed (which always appears, while 2 is optional and has information as reliable as the contract):

[
    {
        "Type": "transfer",
        "Attr": [
            {
                "key": "recipient",
                "value": "cosmos18vd8fpwxzck93qlwghaj6arh4p7c5n89uzcee5"
            },
            {
                "key": "sender",
                "value": "cosmos1zm074khx32hqy20hlshlsd423n07pwlu9cpt37"
            },
            {
                "key": "amount",
                "value": "5000denom"
            }
        ]
    },
    {
        "Type": "wasm",
        "Attr": [
            {
                "key": "contract_address",
                "value": "cosmos18vd8fpwxzck93qlwghaj6arh4p7c5n89uzcee5"
            },
            {
                "key": "action",
                "value": "release"
            },
            {
                "key": "destination",
                "value": "cosmos14k7v7ms4jxkk2etmg9gljxjm4ru3qjdugfsflq"
            }
        ]
    },
    {
        "Type": "transfer",
        "Attr": [
            {
                "key": "recipient",
                "value": "cosmos14k7v7ms4jxkk2etmg9gljxjm4ru3qjdugfsflq"
            },
            {
                "key": "sender",
                "value": "cosmos18vd8fpwxzck93qlwghaj6arh4p7c5n89uzcee5"
            },
            {
                "key": "amount",
                "value": "105000denom"
            }
        ]
    },
    {
        "Type": "message",
        "Attr": [
            {
                "key": "module",
                "value": "wasm"
            },
            {
                "key": "action",
                "value": "execute"
            },
            {
                "key": "signer",
                "value": "cosmos1zm074khx32hqy20hlshlsd423n07pwlu9cpt37"
            },
            {
                "key": "contract_address",
                "value": "cosmos18vd8fpwxzck93qlwghaj6arh4p7c5n89uzcee5"
            }
        ]
    }
]

A note on this format. This is what we return from our module. However, it seems to me that many events with the same Type get merged together somewhere along the stack, so in this case, you may end up with one "transfer" event with the info for both transfers. Double check when evaluating the event logs, I will document better with more experience, especially when I find out the entire path for the events.

Messages

TODO

CLI

TODO - working, but not the nicest interface (json + bash = bleh). Use to upload, but I suggest to focus on frontend / js tooling

Rest

TODO - main supported interface, under rapid change

Documentation

Overview

nolint autogenerated code using github.com/rigelrozanski/multitool aliases generated for the following subdirectories: ALIASGEN: github.com/cosmwasm/wasmd/x/wasm/internal/types ALIASGEN: github.com/cosmwasm/wasmd/x/wasm/internal/keeper

Index

Constants

View Source 
const (
	DefaultParamspace               = types.DefaultParamspace
	ModuleName                      = types.ModuleName
	StoreKey                        = types.StoreKey
	TStoreKey                       = types.TStoreKey
	QuerierRoute                    = types.QuerierRoute
	RouterKey                       = types.RouterKey
	MaxWasmSize                     = types.MaxWasmSize
	MaxLabelSize                    = types.MaxLabelSize
	BuildTagRegexp                  = types.BuildTagRegexp
	MaxBuildTagSize                 = types.MaxBuildTagSize
	CustomEventType                 = types.CustomEventType
	AttributeKeyContractAddr        = types.AttributeKeyContractAddr
	ProposalTypeStoreCode           = types.ProposalTypeStoreCode
	ProposalTypeInstantiateContract = types.ProposalTypeInstantiateContract
	ProposalTypeMigrateContract     = types.ProposalTypeMigrateContract
	ProposalTypeUpdateAdmin         = types.ProposalTypeUpdateAdmin
	ProposalTypeClearAdmin          = types.ProposalTypeClearAdmin
	GasMultiplier                   = keeper.GasMultiplier
	MaxGas                          = keeper.MaxGas
	QueryListContractByCode         = keeper.QueryListContractByCode
	QueryGetContract                = keeper.QueryGetContract
	QueryGetContractState           = keeper.QueryGetContractState
	QueryGetCode                    = keeper.QueryGetCode
	QueryListCode                   = keeper.QueryListCode
	QueryMethodContractStateSmart   = keeper.QueryMethodContractStateSmart
	QueryMethodContractStateAll     = keeper.QueryMethodContractStateAll
	QueryMethodContractStateRaw     = keeper.QueryMethodContractStateRaw
)

Variables

View Source 
var (
	// functions aliases
	RegisterCodec             = types.RegisterLegacyAminoCodec
	RegisterInterfaces        = types.RegisterInterfaces
	ValidateGenesis           = types.ValidateGenesis
	ConvertToProposals        = types.ConvertToProposals
	GetCodeKey                = types.GetCodeKey
	GetContractAddressKey     = types.GetContractAddressKey
	GetContractStorePrefixKey = types.GetContractStorePrefix
	NewCodeInfo               = types.NewCodeInfo
	NewAbsoluteTxPosition     = types.NewAbsoluteTxPosition
	NewContractInfo           = types.NewContractInfo
	NewEnv                    = types.NewEnv
	NewWasmCoins              = types.NewWasmCoins
	ParseEvents               = types.ParseEvents
	DefaultWasmConfig         = types.DefaultWasmConfig
	DefaultParams             = types.DefaultParams
	InitGenesis               = keeper.InitGenesis
	ExportGenesis             = keeper.ExportGenesis
	NewMessageHandler         = keeper.NewMessageHandler
	DefaultEncoders           = keeper.DefaultEncoders
	EncodeBankMsg             = keeper.EncodeBankMsg
	NoCustomMsg               = keeper.NoCustomMsg
	EncodeStakingMsg          = keeper.EncodeStakingMsg
	EncodeWasmMsg             = keeper.EncodeWasmMsg
	NewKeeper                 = keeper.NewKeeper
	NewLegacyQuerier          = keeper.NewLegacyQuerier
	DefaultQueryPlugins       = keeper.DefaultQueryPlugins
	BankQuerier               = keeper.BankQuerier
	NoCustomQuerier           = keeper.NoCustomQuerier
	StakingQuerier            = keeper.StakingQuerier
	WasmQuerier               = keeper.WasmQuerier
	CreateTestInput           = keeper.CreateTestInput
	TestHandler               = keeper.TestHandler
	NewWasmProposalHandler    = keeper.NewWasmProposalHandler
	NewQuerier                = keeper.NewQuerier

	// variable aliases
	ModuleCdc            = types.ModuleCdc
	DefaultCodespace     = types.DefaultCodespace
	ErrCreateFailed      = types.ErrCreateFailed
	ErrAccountExists     = types.ErrAccountExists
	ErrInstantiateFailed = types.ErrInstantiateFailed
	ErrExecuteFailed     = types.ErrExecuteFailed
	ErrGasLimit          = types.ErrGasLimit
	ErrInvalidGenesis    = types.ErrInvalidGenesis
	ErrNotFound          = types.ErrNotFound
	ErrQueryFailed       = types.ErrQueryFailed
	ErrInvalidMsg        = types.ErrInvalidMsg
	KeyLastCodeID        = types.KeyLastCodeID
	KeyLastInstanceID    = types.KeyLastInstanceID
	CodeKeyPrefix        = types.CodeKeyPrefix
	ContractKeyPrefix    = types.ContractKeyPrefix
	ContractStorePrefix  = types.ContractStorePrefix
	EnableAllProposals   = types.EnableAllProposals
	DisableAllProposals  = types.DisableAllProposals
)

Functions

func AddModuleInitFlags added in v0.12.0 

func AddModuleInitFlags(startCmd *cobra.Command)

AddModuleInitFlags implements servertypes.ModuleInitFlags interface.

func NewHandler 

func NewHandler(k *Keeper) sdk.Handler

NewHandler returns a handler for "bank" type messages.

func ReadWasmConfig added in v0.12.0 

func ReadWasmConfig(opts servertypes.AppOptions) (types.WasmConfig, error)

ReadWasmConfig reads the wasm specifig configuration

Types

type AppModule 

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

AppModule implements an application module for the wasm module.

func NewAppModule 

func NewAppModule(keeper *Keeper, validatorSetSource keeper.ValidatorSetSource) AppModule

NewAppModule creates a new AppModule object

func (AppModule) BeginBlock 

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

BeginBlock returns the begin blocker for the wasm module.

func (AppModule) EndBlock 

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

EndBlock returns the end blocker for the wasm module. It returns no validator updates.

func (AppModule) ExportGenesis 

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

ExportGenesis returns the exported genesis state as raw bytes for the wasm module.

func (AppModule) GenerateGenesisState added in v0.12.0 

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

GenerateGenesisState creates a randomized GenState of the bank module.

func (AppModule) InitGenesis 

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

InitGenesis performs genesis initialization for the wasm module. It returns no validator updates.

func (AppModule) LegacyQuerierHandler added in v0.12.0 

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

func (AppModule) ProposalContents added in v0.12.0 

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 wasm module's querier route name.

func (AppModule) RandomizedParams added in v0.12.0 

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

RandomizedParams creates randomized bank param changes for the simulator.

func (AppModule) RegisterInvariants 

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

RegisterInvariants registers the wasm module invariants.

func (AppModule) RegisterServices added in v0.12.0 

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

func (AppModule) RegisterStoreDecoder added in v0.12.0 

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 message routing key for the wasm module.

func (AppModule) WeightedOperations added in v0.12.0 

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{}

AppModuleBasic defines the basic application module used by the wasm module.

func (AppModuleBasic) DefaultGenesis 

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

DefaultGenesis returns default genesis state as raw bytes for the wasm module.

func (AppModuleBasic) GetQueryCmd 

func (b AppModuleBasic) GetQueryCmd() *cobra.Command

GetQueryCmd returns no root query command for the wasm module.

func (AppModuleBasic) GetTxCmd 

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

GetTxCmd returns the root tx command for the wasm module.

func (AppModuleBasic) Name 

func (AppModuleBasic) Name() string

Name returns the wasm module's name.

func (AppModuleBasic) RegisterGRPCGatewayRoutes added in v0.12.0 

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

func (AppModuleBasic) RegisterInterfaces added in v0.12.0 

func (b AppModuleBasic) RegisterInterfaces(registry cdctypes.InterfaceRegistry)

RegisterInterfaceTypes implements InterfaceModule

func (AppModuleBasic) RegisterLegacyAminoCodec added in v0.12.0 

func (b AppModuleBasic) RegisterLegacyAminoCodec(amino *codec.LegacyAmino)

func (AppModuleBasic) RegisterRESTRoutes 

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

RegisterRESTRoutes registers the REST routes for the wasm module.

func (AppModuleBasic) ValidateGenesis 

func (b AppModuleBasic) ValidateGenesis(marshaler codec.JSONMarshaler, config client.TxEncodingConfig, message json.RawMessage) error

ValidateGenesis performs genesis state validation for the wasm module.

type BankEncoder 

type BankEncoder = keeper.BankEncoder

type Code 

type Code = types.Code

type CodeInfo 

type CodeInfo = types.CodeInfo

type CodeInfoResponse added in v0.12.0 

type CodeInfoResponse = types.CodeInfoResponse

type Config added in v0.11.0 

type Config = types.WasmConfig

type Contract 

type Contract = types.Contract

type ContractInfo 

type ContractInfo = types.ContractInfo

type ContractInfoWithAddress 

type ContractInfoWithAddress = types.ContractInfoWithAddress

type CreatedAt 

type CreatedAt = types.AbsoluteTxPosition

type CustomEncoder 

type CustomEncoder = keeper.CustomEncoder

type CustomQuerier 

type CustomQuerier = keeper.CustomQuerier

type GenesisState 

type GenesisState = types.GenesisState

type Keeper 

type Keeper = keeper.Keeper

type MessageEncoders 

type MessageEncoders = keeper.MessageEncoders

type MessageHandler 

type MessageHandler = keeper.MessageHandler

type Model 

type Model = types.Model

type MsgClearAdmin added in v0.9.0 

type MsgClearAdmin = types.MsgClearAdmin

type MsgClearAdminResponse added in v0.14.1 

type MsgClearAdminResponse = types.MsgClearAdminResponse

type MsgExecuteContract 

type MsgExecuteContract = types.MsgExecuteContract

type MsgExecuteContractResponse added in v0.14.1 

type MsgExecuteContractResponse = types.MsgExecuteContractResponse

type MsgInstantiateContract 

type MsgInstantiateContract = types.MsgInstantiateContract

type MsgInstantiateContractResponse added in v0.14.1 

type MsgInstantiateContractResponse = types.MsgInstantiateContractResponse

type MsgMigrateContract added in v0.9.0 

type MsgMigrateContract = types.MsgMigrateContract

type MsgMigrateContractResponse added in v0.14.1 

type MsgMigrateContractResponse = types.MsgMigrateContractResponse

type MsgServer added in v0.14.1 

type MsgServer = types.MsgServer

type MsgStoreCode 

type MsgStoreCode = types.MsgStoreCode

type MsgStoreCodeResponse added in v0.14.1 

type MsgStoreCodeResponse = types.MsgStoreCodeResponse

type MsgUpdateAdmin added in v0.9.0 

type MsgUpdateAdmin = types.MsgUpdateAdmin

type MsgUpdateAdminResponse added in v0.14.1 

type MsgUpdateAdminResponse = types.MsgUpdateAdminResponse

type ProposalType added in v0.10.0 

type ProposalType = types.ProposalType

type QueryHandler 

type QueryHandler = keeper.QueryHandler

type QueryPlugins 

type QueryPlugins = keeper.QueryPlugins

type StakingEncoder 

type StakingEncoder = keeper.StakingEncoder

type WasmEncoder 

type WasmEncoder = keeper.WasmEncoder

Source Files

View all Source files

Directories

Path Synopsis
cli
rest
utils
internal
keeper
types
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