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// Copyright (C) 2019-2024 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
//
//go:build msgtrace
// +build msgtrace
package messagetracer
import (
"hash/fnv"
"github.com/algorand/graphtrace/graphtrace"
"github.com/algorand/go-algorand/config"
"github.com/algorand/go-algorand/logging"
)
type graphtraceMessageTracer struct {
tracer graphtrace.Client
log logging.Logger
}
func (gmt *graphtraceMessageTracer) Init(cfg config.Local) MessageTracer {
if cfg.NetworkMessageTraceServer == "" {
gmt.log.Info("NetworkMessageTraceServer empty graphtrace disabled")
return nil
}
var err error
gmt.tracer, err = graphtrace.NewTCPClient(cfg.NetworkMessageTraceServer, gmt.log)
if err != nil {
gmt.log.Errorf("unable to create trace client: %v", err)
return nil
}
gmt.log.Infof("tracing network messages to %s", cfg.NetworkMessageTraceServer)
return gmt
}
func (gmt *graphtraceMessageTracer) HashTrace(prefix string, data []byte) {
hasher := fnv.New64a()
hasher.Write(data)
pb := []byte(prefix)
msg := make([]byte, len(pb)+8)
copy(msg, pb)
hash := hasher.Sum(msg[0:len(pb)])
gmt.tracer.Trace(hash)
}
// NewGraphtraceMessageTracer returns a new MessageTracer that sends data to a graphtrace collector
func NewGraphtraceMessageTracer(log logging.Logger) MessageTracer {
return &graphtraceMessageTracer{log: log}
}
func init() {
if implFactory != nil {
panic("at most one MessageTracer impl should be compiled in, dup found at graphtrace.go init()")
}
implFactory = NewGraphtraceMessageTracer
}
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