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Merged
pavolloffay merged 5 commits into from
Oct 12, 2017
Merged

Support configuration files #462

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55718a7
Support configuration files
pavolloffay Oct 9, 2017
912b81e
Fix review comments
pavolloffay Oct 11, 2017
20697b1
rename to AddConfigFileFlag
pavolloffay Oct 12, 2017
5c23082
Add config file name to logs
pavolloffay Oct 12, 2017
5891eb2
Merge branch 'master' into viper-config-files
black-adder Oct 12, 2017
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4 changes: 4 additions & 0 deletions cmd/agent/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@ import (
"go.uber.org/zap"

"github.com/uber/jaeger/cmd/agent/app"
"github.com/uber/jaeger/cmd/flags"
"github.com/uber/jaeger/pkg/config"
"github.com/uber/jaeger/pkg/metrics"
)
Expand All @@ -35,6 +36,8 @@ func main() {
Short: "Jaeger agent is a local daemon program which collects tracing data.",
Long: `Jaeger agent is a daemon program that runs on every host and receives tracing data submitted by Jaeger client libraries.`,
RunE: func(cmd *cobra.Command, args []string) error {
flags.TryLoadConfigFile(v, logger)

builder := &app.Builder{}
builder.InitFromViper(v)
runtime.GOMAXPROCS(runtime.NumCPU())
Expand All @@ -58,6 +61,7 @@ func main() {
config.AddFlags(
v,
command,
flags.AddConfigFileFlag,
app.AddFlags,
metrics.AddFlags,
)
Expand Down
5 changes: 4 additions & 1 deletion cmd/collector/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -61,13 +61,15 @@ func main() {
Long: `Jaeger collector receives traces from Jaeger agents and agent and runs them through
a processing pipeline.`,
Run: func(cmd *cobra.Command, args []string) {
flags.TryLoadConfigFile(v, logger)

sFlags := new(flags.SharedFlags).InitFromViper(v)
casOptions.InitFromViper(v)
esOptions.InitFromViper(v)

baseMetrics := xkit.Wrap(serviceName, expvar.NewFactory(10))

builderOpts := new(builder.CollectorOptions).InitFromViper(v)
sFlags := new(flags.SharedFlags).InitFromViper(v)

hc, err := healthcheck.Serve(http.StatusServiceUnavailable, builderOpts.CollectorHealthCheckHTTPPort, logger)
if err != nil {
Expand Down Expand Up @@ -130,6 +132,7 @@ func main() {
config.AddFlags(
v,
command,
flags.AddConfigFileFlag,
flags.AddFlags,
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@yurishkuro yurishkuro Oct 9, 2017

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any reason not to have config flag added as part of AddFlags? It would probably also avoid duplicating the code in L65-71 in all binaries, only do it in sFlags := new(flags.SharedFlags).InitFromViper(v)

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@pavolloffay pavolloffay Oct 10, 2017

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I did a split for two reasons:

  1. agent does use flags.AddFlags
  2. flags.AddFlags can be specified in config file, so there would be twice sFlags := new(flags.SharedFlags).InitFromViper(v)

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@yurishkuro yurishkuro Oct 11, 2017 •
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I see - makes sense. In that case can we move L65-71 into that package too, so that we can have just a one liner in the mains? E.g. something like flags.TryLoadConfigFile(v, logger)

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@yurishkuro yurishkuro Oct 11, 2017

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also, by doing that we can make flags.ExternalConfFlags type private. I suggest renaming it to ConfigFile(Flag) ("external" is non-informative)

builder.AddFlags,
casOptions.AddFlags,
Expand Down
18 changes: 18 additions & 0 deletions cmd/flags/flags.go
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ import (
"time"

"github.com/spf13/viper"
"go.uber.org/zap"
)

const (
Expand All @@ -36,8 +37,25 @@ const (
logLevel = "log-level"
dependencyStorageType = "dependency-storage.type"
dependencyStorageDataFrequency = "dependency-storage.data-frequency"
configFile = "config-file"
)

// AddConfigFileFlag adds flags for ExternalConfFlags
func AddConfigFileFlag(flagSet *flag.FlagSet) {
flagSet.String(configFile, "", "Configuration file in JSON, TOML, YAML, HCL, or Java properties formats (default none). See spf13/viper for precedence.")
}

// TryLoadConfigFile initializes viper with config file specified as flag
func TryLoadConfigFile(v *viper.Viper, logger *zap.Logger) {
if file := v.GetString(configFile); file != "" {
v.SetConfigFile(file)
err := v.ReadInConfig()
if err != nil {
logger.Fatal("Error loading config file", zap.Error(err), zap.String(configFile, file))
}
}
}

// SharedFlags holds flags configuration
type SharedFlags struct {
// SpanStorage defines common settings for Span Storage.
Expand Down
5 changes: 4 additions & 1 deletion cmd/query/main.go
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Expand Up @@ -54,10 +54,12 @@ func main() {
Short: "Jaeger query is a service to access tracing data",
Long: `Jaeger query is a service to access tracing data and host UI.`,
Run: func(cmd *cobra.Command, args []string) {
flags.TryLoadConfigFile(v, logger)

sFlags := new(flags.SharedFlags).InitFromViper(v)
casOptions.InitFromViper(v)
esOptions.InitFromViper(v)
queryOpts := new(builder.QueryOptions).InitFromViper(v)
sFlags := new(flags.SharedFlags).InitFromViper(v)

hc, err := healthcheck.Serve(http.StatusServiceUnavailable, queryOpts.QueryHealthCheckHTTPPort, logger)
if err != nil {
Expand Down Expand Up @@ -123,6 +125,7 @@ func main() {
config.AddFlags(
v,
command,
flags.AddConfigFileFlag,
flags.AddFlags,
casOptions.AddFlags,
esOptions.AddFlags,
Expand Down
6 changes: 4 additions & 2 deletions cmd/standalone/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -59,10 +59,11 @@ func main() {
Long: `Jaeger all-in-one distribution with agent, collector and query. Use with caution this version
uses only in-memory database.`,
RunE: func(cmd *cobra.Command, args []string) error {
runtime.GOMAXPROCS(runtime.NumCPU())
flags.TryLoadConfigFile(v, logger)

cOpts := new(collector.CollectorOptions).InitFromViper(v)
runtime.GOMAXPROCS(runtime.NumCPU())
sFlags := new(flags.SharedFlags).InitFromViper(v)
cOpts := new(collector.CollectorOptions).InitFromViper(v)
qOpts := new(query.QueryOptions).InitFromViper(v)

metricsFactory := xkit.Wrap("jaeger-standalone", expvar.NewFactory(10))
Expand All @@ -80,6 +81,7 @@ func main() {
config.AddFlags(
v,
command,
flags.AddConfigFileFlag,
flags.AddFlags,
collector.AddFlags,
query.AddFlags,
Expand Down