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result_matcher.go
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/
result_matcher.go
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//
// Copyright 2019 Insolar Technologies GmbH
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package logicrunner
import (
"context"
"sync"
"go.opencensus.io/stats"
"github.com/insolar/insolar/insolar"
"github.com/insolar/insolar/insolar/bus"
"github.com/insolar/insolar/insolar/payload"
"github.com/insolar/insolar/insolar/pulse"
"github.com/insolar/insolar/instrumentation/inslogger"
"github.com/insolar/insolar/logicrunner/metrics"
)
//go:generate minimock -i github.com/insolar/insolar/logicrunner.ResultMatcher -o ./ -s _mock.go -g
type ResultMatcher interface {
AddStillExecution(ctx context.Context, msg payload.StillExecuting)
AddUnwantedResponse(ctx context.Context, msg payload.ReturnResults)
Clear(ctx context.Context)
}
type resultWithContext struct {
ctx context.Context
result payload.ReturnResults
}
type resultsMatcher struct {
sender bus.Sender
pulseAccessor pulse.Accessor
lock sync.Mutex
executionNodes map[insolar.Reference]insolar.Reference
unwantedResponses map[insolar.Reference]resultWithContext
}
func newResultsMatcher(sender bus.Sender, pa pulse.Accessor) *resultsMatcher {
return &resultsMatcher{
sender: sender,
pulseAccessor: pa,
executionNodes: make(map[insolar.Reference]insolar.Reference),
unwantedResponses: make(map[insolar.Reference]resultWithContext),
}
}
func (rm *resultsMatcher) AddStillExecution(ctx context.Context, msg payload.StillExecuting) {
rm.lock.Lock()
defer rm.lock.Unlock()
inslogger.FromContext(ctx).Debug("got pendings confirmation")
for _, reqRef := range msg.RequestRefs {
if response, ok := rm.unwantedResponses[reqRef]; ok {
ctx := response.ctx
go rm.send(ctx, response.result, msg.Executor)
delete(rm.unwantedResponses, reqRef)
}
rm.executionNodes[reqRef] = msg.Executor
}
}
func (rm *resultsMatcher) AddUnwantedResponse(ctx context.Context, msg payload.ReturnResults) {
rm.lock.Lock()
defer rm.lock.Unlock()
logger := inslogger.FromContext(ctx).WithFields(map[string]interface{}{
"parent_request": msg.Reason,
"request": msg.RequestRef,
})
logger.Debug("got unwanted response to request")
if msg.Reason.IsEmpty() {
logger.Error("got unwanted response with empty reason, skipping")
return
}
if node, ok := rm.executionNodes[msg.Reason]; ok {
go rm.send(ctx, msg, node)
return
}
rm.unwantedResponses[msg.Reason] = resultWithContext{
ctx: ctx,
result: msg,
}
}
func (rm *resultsMatcher) Clear(ctx context.Context) {
rm.lock.Lock()
defer rm.lock.Unlock()
stats.Record(ctx, metrics.ResultsMatcherDroppedResults.M(int64(len(rm.unwantedResponses))))
for _, result := range rm.unwantedResponses {
inslogger.FromContext(ctx).WithFields(map[string]interface{}{
"parent_request": result.result.Reason,
"request": result.result.RequestRef,
}).Warn("not claimed response (not confirmed pending)")
}
rm.executionNodes = make(map[insolar.Reference]insolar.Reference)
rm.unwantedResponses = make(map[insolar.Reference]resultWithContext)
}
func (rm *resultsMatcher) send(ctx context.Context, msg payload.ReturnResults, receiver insolar.Reference) {
stats.Record(ctx, metrics.ResultsMatcherSentResults.M(1))
logger := inslogger.FromContext(ctx)
logger.Debug("resending result of request ", msg.RequestRef.String(), " to ", receiver.String())
msgData, err := payload.NewResultMessage(&msg)
if err != nil {
inslogger.FromContext(ctx).Debug("failed to serialize message")
return
}
sender := bus.NewWaitOKWithRetrySender(rm.sender, rm.pulseAccessor, 1)
sender.SendTarget(ctx, msgData, receiver)
}