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configsource.go
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/
configsource.go
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// Copyright Splunk, Inc.
// Copyright The OpenTelemetry Authors
//
// 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 zookeeperconfigsource
import (
"context"
"time"
"github.com/go-zookeeper/zk"
"go.opentelemetry.io/collector/config/experimental/configsource"
"go.uber.org/zap"
)
type zookeeperconfigsource struct {
logger *zap.Logger
endpoints []string
timeout time.Duration
}
var _ configsource.ConfigSource = (*zookeeperconfigsource)(nil)
func (z *zookeeperconfigsource) NewSession(ctx context.Context) (configsource.Session, error) {
return newSession(z.logger, newConnectFunc(z.endpoints, z.timeout)), nil
}
// newConnectFunc returns a new function that can be used to establish and return a connection
// to a zookeeper cluster. Every function returned by newConnectFunc will return the same
// underlying connection until it is lost.
func newConnectFunc(endpoints []string, timeout time.Duration) connectFunc {
var conn *zk.Conn
return func(ctx context.Context) (zkConnection, error) {
if conn != nil && conn.State() != zk.StateDisconnected {
return conn, nil
}
conn, _, err := zk.Connect(endpoints, timeout, zk.WithLogInfo(false))
if err != nil {
return nil, err
}
return conn, nil
}
}