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Vote->Counter; Fee is types.Coin; Context has Account; Cleanup
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| package counter | ||
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| import ( | ||
| "fmt" | ||
|
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| abci "github.com/tendermint/abci/types" | ||
| "github.com/tendermint/basecoin/types" | ||
| "github.com/tendermint/go-wire" | ||
| ) | ||
|
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| type CounterPluginState struct { | ||
| Counter int | ||
| TotalCost types.Coins | ||
| } | ||
|
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| type CounterTx struct { | ||
| Valid bool | ||
| Cost types.Coins | ||
| } | ||
|
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| //-------------------------------------------------------------------------------- | ||
|
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| type CounterPlugin struct { | ||
| name string | ||
| } | ||
|
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| func (cp *CounterPlugin) Name() string { | ||
| return cp.name | ||
| } | ||
|
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| func (cp *CounterPlugin) StateKey() []byte { | ||
| return []byte(fmt.Sprintf("CounterPlugin{name=%v}.State", cp.name)) | ||
| } | ||
|
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| func NewCounterPlugin(name string) *CounterPlugin { | ||
| return &CounterPlugin{ | ||
| name: name, | ||
| } | ||
| } | ||
|
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| func (cp *CounterPlugin) SetOption(store types.KVStore, key string, value string) (log string) { | ||
| return "" | ||
| } | ||
|
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| func (cp *CounterPlugin) RunTx(store types.KVStore, ctx types.CallContext, txBytes []byte) (res abci.Result) { | ||
|
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| // Decode tx | ||
| var tx CounterTx | ||
| err := wire.ReadBinaryBytes(txBytes, &tx) | ||
| if err != nil { | ||
| return abci.ErrBaseEncodingError.AppendLog("Error decoding tx: " + err.Error()) | ||
| } | ||
|
|
||
| // Validate tx | ||
| if !tx.Valid { | ||
| return abci.ErrInternalError.AppendLog("CounterTx.Valid must be true") | ||
| } | ||
| if !tx.Cost.IsValid() { | ||
| return abci.ErrInternalError.AppendLog("CounterTx.Cost is not sorted or has zero amounts") | ||
| } | ||
| if !tx.Cost.IsNonnegative() { | ||
| return abci.ErrInternalError.AppendLog("CounterTx.Cost must be nonnegative") | ||
| } | ||
|
|
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| // Did the caller provide enough coins? | ||
| if !ctx.Coins.IsGTE(tx.Cost) { | ||
| return abci.ErrInsufficientFunds.AppendLog("CounterTx.Cost was not provided") | ||
| } | ||
|
|
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| // TODO If there are any funds left over, return funds. | ||
| // e.g. !ctx.Coins.Minus(tx.Cost).IsZero() | ||
| // ctx.CallerAccount is synced w/ store, so just modify that and store it. | ||
|
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| // Load CounterPluginState | ||
| var cpState CounterPluginState | ||
| cpStateBytes := store.Get(cp.StateKey()) | ||
| if len(cpStateBytes) > 0 { | ||
| err = wire.ReadBinaryBytes(cpStateBytes, &cpState) | ||
| if err != nil { | ||
| return abci.ErrInternalError.AppendLog("Error decoding state: " + err.Error()) | ||
| } | ||
| } | ||
|
|
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| // Update CounterPluginState | ||
| cpState.Counter += 1 | ||
| cpState.TotalCost = cpState.TotalCost.Plus(tx.Cost) | ||
|
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| // Save CounterPluginState | ||
| store.Set(cp.StateKey(), wire.BinaryBytes(cpState)) | ||
|
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| return abci.OK | ||
| } | ||
|
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| func (cp *CounterPlugin) InitChain(store types.KVStore, vals []*abci.Validator) { | ||
| } | ||
|
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| func (cp *CounterPlugin) BeginBlock(store types.KVStore, height uint64) { | ||
| } | ||
|
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||
| func (cp *CounterPlugin) EndBlock(store types.KVStore, height uint64) []*abci.Validator { | ||
| return nil | ||
| } |
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