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client_sniffer.go
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/
client_sniffer.go
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// Licensed to Apache Software Foundation (ASF) under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Apache Software Foundation (ASF) licenses this file to you 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 kafka
import (
"context"
"time"
"github.com/apache/skywalking-satellite/plugins/client/api"
)
// snifferBrokerStatus would sniffer the broker status to notify the listeners.
func (c *Client) snifferBrokerStatus() {
ctx, cancel := context.WithCancel(c.ctx)
defer cancel()
timeTicker := time.NewTicker(time.Duration(c.RefreshPeriod) * time.Minute)
for {
select {
case <-timeTicker.C:
brokers := c.client.Brokers()
if len(brokers) == 0 && c.status == api.Connected {
c.status = api.Disconnect
c.notify()
} else if len(brokers) > 0 && c.status == api.Disconnect {
c.status = api.Connected
c.notify()
}
case <-ctx.Done():
timeTicker.Stop()
return
}
}
}
// notify the current status to the listeners.
func (c *Client) notify() {
for _, listener := range c.listeners {
listener <- c.status
}
}