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flags.go
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flags.go
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// Copyright (c) 2018 The Jaeger 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 tchannel
import (
"flag"
"strings"
"time"
"github.com/spf13/viper"
"go.uber.org/zap"
)
const (
defaultConnCheckTimeout = 250 * time.Millisecond
tchannelPrefix = "reporter.tchannel."
collectorHostPort = "collector.host-port"
hostPort = "host-port"
discoveryMinPeers = "discovery.min-peers"
discoveryConnCheckTimeout = "discovery.conn-check-timeout"
reportTimeout = "report-timeout"
)
// AddFlags adds flags for Builder.
func AddFlags(flags *flag.FlagSet) {
flags.String(
tchannelPrefix+hostPort,
"",
"comma-separated string representing host:ports of a static list of collectors to connect to directly (e.g. when not using service discovery)")
flags.Int(
tchannelPrefix+discoveryMinPeers,
defaultMinPeers,
"if using service discovery, the min number of connections to maintain to the backend")
flags.Duration(
tchannelPrefix+discoveryConnCheckTimeout,
defaultConnCheckTimeout,
"sets the timeout used when establishing new connections")
flags.Duration(
tchannelPrefix+reportTimeout,
time.Second,
"sets the timeout used when reporting spans")
// TODO remove deprecated in 1.9
flags.String(
collectorHostPort,
"",
"Deprecated; comma-separated string representing host:ports of a static list of collectors to connect to directly (e.g. when not using service discovery)")
flags.Int(
discoveryMinPeers,
defaultMinPeers,
"Deprecated; if using service discovery, the min number of connections to maintain to the backend")
flags.Duration(
discoveryConnCheckTimeout,
defaultConnCheckTimeout,
"Deprecated; sets the timeout used when establishing new connections")
}
// InitFromViper initializes Builder with properties retrieved from Viper.
func (b *Builder) InitFromViper(v *viper.Viper, logger *zap.Logger) *Builder {
if len(v.GetString(collectorHostPort)) > 0 {
logger.Warn("Using deprecated configuration", zap.String("option", collectorHostPort))
b.CollectorHostPorts = strings.Split(v.GetString(collectorHostPort), ",")
}
b.DiscoveryMinPeers = v.GetInt(discoveryMinPeers)
if b.DiscoveryMinPeers != defaultMinPeers {
logger.Warn("Using deprecated configuration", zap.String("option", discoveryMinPeers))
}
b.ConnCheckTimeout = v.GetDuration(discoveryConnCheckTimeout)
if b.ConnCheckTimeout != defaultConnCheckTimeout {
logger.Warn("Using deprecated configuration", zap.String("option", discoveryConnCheckTimeout))
}
if len(v.GetString(tchannelPrefix+hostPort)) > 0 {
b.CollectorHostPorts = strings.Split(v.GetString(tchannelPrefix+hostPort), ",")
}
if value := v.GetInt(tchannelPrefix + discoveryMinPeers); value != defaultMinPeers {
b.DiscoveryMinPeers = value
}
if value := v.GetDuration(tchannelPrefix + discoveryConnCheckTimeout); value != defaultConnCheckTimeout {
b.ConnCheckTimeout = value
}
b.ReportTimeout = v.GetDuration(tchannelPrefix + reportTimeout)
return b
}