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Remove dependency of types/module package on x/simulation (cosmos#5835)
Closes: cosmos#5724
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| package simulation | ||
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| import "math/rand" | ||
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| // TransitionMatrix is _almost_ a left stochastic matrix. It is technically | ||
| // not one due to not normalizing the column values. In the future, if we want | ||
| // to find the steady state distribution, it will be quite easy to normalize | ||
| // these values to get a stochastic matrix. Floats aren't currently used as | ||
| // the default due to non-determinism across architectures | ||
| type TransitionMatrix interface { | ||
| NextState(r *rand.Rand, i int) int | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,160 @@ | ||
| package simulation | ||
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| import ( | ||
| "encoding/json" | ||
| "math/rand" | ||
| "time" | ||
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| "github.com/cosmos/cosmos-sdk/baseapp" | ||
| "github.com/cosmos/cosmos-sdk/codec" | ||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| ) | ||
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| type WeightedProposalContent interface { | ||
| AppParamsKey() string // key used to retrieve the value of the weight from the simulation application params | ||
| DefaultWeight() int // default weight | ||
| ContentSimulatorFn() ContentSimulatorFn // content simulator function | ||
| } | ||
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| type ContentSimulatorFn func(r *rand.Rand, ctx sdk.Context, accs []Account) Content | ||
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| type Content interface { | ||
| GetTitle() string | ||
| GetDescription() string | ||
| ProposalRoute() string | ||
| ProposalType() string | ||
| ValidateBasic() error | ||
| String() string | ||
| } | ||
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| type SimValFn func(r *rand.Rand) string | ||
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| type ParamChange interface { | ||
| Subspace() string | ||
| Key() string | ||
| SimValue() SimValFn | ||
| ComposedKey() string | ||
| } | ||
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| type WeightedOperation interface { | ||
| Weight() int | ||
| Op() Operation | ||
| } | ||
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| // Operation runs a state machine transition, and ensures the transition | ||
| // happened as expected. The operation could be running and testing a fuzzed | ||
| // transaction, or doing the same for a message. | ||
| // | ||
| // For ease of debugging, an operation returns a descriptive message "action", | ||
| // which details what this fuzzed state machine transition actually did. | ||
| // | ||
| // Operations can optionally provide a list of "FutureOperations" to run later | ||
| // These will be ran at the beginning of the corresponding block. | ||
| type Operation func(r *rand.Rand, app *baseapp.BaseApp, | ||
| ctx sdk.Context, accounts []Account, chainID string) ( | ||
| OperationMsg OperationMsg, futureOps []FutureOperation, err error) | ||
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| // OperationMsg - structure for operation output | ||
| type OperationMsg struct { | ||
| Route string `json:"route" yaml:"route"` // msg route (i.e module name) | ||
| Name string `json:"name" yaml:"name"` // operation name (msg Type or "no-operation") | ||
| Comment string `json:"comment" yaml:"comment"` // additional comment | ||
| OK bool `json:"ok" yaml:"ok"` // success | ||
| Msg json.RawMessage `json:"msg" yaml:"msg"` // JSON encoded msg | ||
| } | ||
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| // NewOperationMsgBasic creates a new operation message from raw input. | ||
| func NewOperationMsgBasic(route, name, comment string, ok bool, msg []byte) OperationMsg { | ||
| return OperationMsg{ | ||
| Route: route, | ||
| Name: name, | ||
| Comment: comment, | ||
| OK: ok, | ||
| Msg: msg, | ||
| } | ||
| } | ||
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| // NewOperationMsg - create a new operation message from sdk.Msg | ||
| func NewOperationMsg(msg sdk.Msg, ok bool, comment string) OperationMsg { | ||
| return NewOperationMsgBasic(msg.Route(), msg.Type(), comment, ok, msg.GetSignBytes()) | ||
| } | ||
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| // NoOpMsg - create a no-operation message | ||
| func NoOpMsg(route string) OperationMsg { | ||
| return NewOperationMsgBasic(route, "no-operation", "", false, nil) | ||
| } | ||
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| // log entry text for this operation msg | ||
| func (om OperationMsg) String() string { | ||
| out, err := json.Marshal(om) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| return string(out) | ||
| } | ||
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| // MustMarshal Marshals the operation msg, panic on error | ||
| func (om OperationMsg) MustMarshal() json.RawMessage { | ||
| out, err := json.Marshal(om) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| return out | ||
| } | ||
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| // LogEvent adds an event for the events stats | ||
| func (om OperationMsg) LogEvent(eventLogger func(route, op, evResult string)) { | ||
| pass := "ok" | ||
| if !om.OK { | ||
| pass = "failure" | ||
| } | ||
| eventLogger(om.Route, om.Name, pass) | ||
| } | ||
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| //________________________________________________________________________ | ||
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| // FutureOperation is an operation which will be ran at the beginning of the | ||
| // provided BlockHeight. If both a BlockHeight and BlockTime are specified, it | ||
| // will use the BlockHeight. In the (likely) event that multiple operations | ||
| // are queued at the same block height, they will execute in a FIFO pattern. | ||
| type FutureOperation struct { | ||
| BlockHeight int | ||
| BlockTime time.Time | ||
| Op Operation | ||
| } | ||
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| // AppParams defines a flat JSON of key/values for all possible configurable | ||
| // simulation parameters. It might contain: operation weights, simulation parameters | ||
| // and flattened module state parameters (i.e not stored under it's respective module name). | ||
| type AppParams map[string]json.RawMessage | ||
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| // GetOrGenerate attempts to get a given parameter by key from the AppParams | ||
| // object. If it exists, it'll be decoded and returned. Otherwise, the provided | ||
| // ParamSimulator is used to generate a random value or default value (eg: in the | ||
| // case of operation weights where Rand is not used). | ||
| func (sp AppParams) GetOrGenerate(cdc *codec.Codec, key string, ptr interface{}, r *rand.Rand, ps ParamSimulator) { | ||
| if v, ok := sp[key]; ok && v != nil { | ||
| cdc.MustUnmarshalJSON(v, ptr) | ||
| return | ||
| } | ||
|
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| ps(r) | ||
| } | ||
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| type ParamSimulator func(r *rand.Rand) | ||
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| type SelectOpFn func(r *rand.Rand) Operation | ||
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| // AppStateFn returns the app state json bytes and the genesis accounts | ||
| type AppStateFn func(r *rand.Rand, accs []Account, config Config) ( | ||
| appState json.RawMessage, accounts []Account, chainId string, genesisTimestamp time.Time, | ||
| ) | ||
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| type Params interface { | ||
| PastEvidenceFraction() float64 | ||
| NumKeys() int | ||
| EvidenceFraction() float64 | ||
| InitialLivenessWeightings() []int | ||
| LivenessTransitionMatrix() TransitionMatrix | ||
| BlockSizeTransitionMatrix() TransitionMatrix | ||
| } |
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