[VOL-3142] Update dependency of voltha-lib-go to include log package registration fix
Change-Id: I36890c7aa685e46721b481d5c965f9c0bc86934c
diff --git a/vendor/github.com/uber/jaeger-client-go/config/config.go b/vendor/github.com/uber/jaeger-client-go/config/config.go
new file mode 100644
index 0000000..44e9353
--- /dev/null
+++ b/vendor/github.com/uber/jaeger-client-go/config/config.go
@@ -0,0 +1,413 @@
+// Copyright (c) 2017-2018 Uber Technologies, Inc.
+//
+// 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 config
+
+import (
+ "errors"
+ "fmt"
+ "io"
+ "strings"
+ "time"
+
+ "github.com/opentracing/opentracing-go"
+
+ "github.com/uber/jaeger-client-go"
+ "github.com/uber/jaeger-client-go/internal/baggage/remote"
+ throttler "github.com/uber/jaeger-client-go/internal/throttler/remote"
+ "github.com/uber/jaeger-client-go/rpcmetrics"
+ "github.com/uber/jaeger-client-go/transport"
+ "github.com/uber/jaeger-lib/metrics"
+)
+
+const defaultSamplingProbability = 0.001
+
+// Configuration configures and creates Jaeger Tracer
+type Configuration struct {
+ // ServiceName specifies the service name to use on the tracer.
+ // Can be provided via environment variable named JAEGER_SERVICE_NAME
+ ServiceName string `yaml:"serviceName"`
+
+ // Disabled can be provided via environment variable named JAEGER_DISABLED
+ Disabled bool `yaml:"disabled"`
+
+ // RPCMetrics can be provided via environment variable named JAEGER_RPC_METRICS
+ RPCMetrics bool `yaml:"rpc_metrics"`
+
+ // Tags can be provided via environment variable named JAEGER_TAGS
+ Tags []opentracing.Tag `yaml:"tags"`
+
+ Sampler *SamplerConfig `yaml:"sampler"`
+ Reporter *ReporterConfig `yaml:"reporter"`
+ Headers *jaeger.HeadersConfig `yaml:"headers"`
+ BaggageRestrictions *BaggageRestrictionsConfig `yaml:"baggage_restrictions"`
+ Throttler *ThrottlerConfig `yaml:"throttler"`
+}
+
+// SamplerConfig allows initializing a non-default sampler. All fields are optional.
+type SamplerConfig struct {
+ // Type specifies the type of the sampler: const, probabilistic, rateLimiting, or remote
+ // Can be set by exporting an environment variable named JAEGER_SAMPLER_TYPE
+ Type string `yaml:"type"`
+
+ // Param is a value passed to the sampler.
+ // Valid values for Param field are:
+ // - for "const" sampler, 0 or 1 for always false/true respectively
+ // - for "probabilistic" sampler, a probability between 0 and 1
+ // - for "rateLimiting" sampler, the number of spans per second
+ // - for "remote" sampler, param is the same as for "probabilistic"
+ // and indicates the initial sampling rate before the actual one
+ // is received from the mothership.
+ // Can be set by exporting an environment variable named JAEGER_SAMPLER_PARAM
+ Param float64 `yaml:"param"`
+
+ // SamplingServerURL is the address of jaeger-agent's HTTP sampling server
+ // Can be set by exporting an environment variable named JAEGER_SAMPLER_MANAGER_HOST_PORT
+ SamplingServerURL string `yaml:"samplingServerURL"`
+
+ // SamplingRefreshInterval controls how often the remotely controlled sampler will poll
+ // jaeger-agent for the appropriate sampling strategy.
+ // Can be set by exporting an environment variable named JAEGER_SAMPLER_REFRESH_INTERVAL
+ SamplingRefreshInterval time.Duration `yaml:"samplingRefreshInterval"`
+
+ // MaxOperations is the maximum number of operations that the PerOperationSampler
+ // will keep track of. If an operation is not tracked, a default probabilistic
+ // sampler will be used rather than the per operation specific sampler.
+ // Can be set by exporting an environment variable named JAEGER_SAMPLER_MAX_OPERATIONS.
+ MaxOperations int `yaml:"maxOperations"`
+
+ // Opt-in feature for applications that require late binding of span name via explicit
+ // call to SetOperationName when using PerOperationSampler. When this feature is enabled,
+ // the sampler will return retryable=true from OnCreateSpan(), thus leaving the sampling
+ // decision as non-final (and the span as writeable). This may lead to degraded performance
+ // in applications that always provide the correct span name on trace creation.
+ //
+ // For backwards compatibility this option is off by default.
+ OperationNameLateBinding bool `yaml:"operationNameLateBinding"`
+
+ // Options can be used to programmatically pass additional options to the Remote sampler.
+ Options []jaeger.SamplerOption
+}
+
+// ReporterConfig configures the reporter. All fields are optional.
+type ReporterConfig struct {
+ // QueueSize controls how many spans the reporter can keep in memory before it starts dropping
+ // new spans. The queue is continuously drained by a background go-routine, as fast as spans
+ // can be sent out of process.
+ // Can be set by exporting an environment variable named JAEGER_REPORTER_MAX_QUEUE_SIZE
+ QueueSize int `yaml:"queueSize"`
+
+ // BufferFlushInterval controls how often the buffer is force-flushed, even if it's not full.
+ // It is generally not useful, as it only matters for very low traffic services.
+ // Can be set by exporting an environment variable named JAEGER_REPORTER_FLUSH_INTERVAL
+ BufferFlushInterval time.Duration
+
+ // LogSpans, when true, enables LoggingReporter that runs in parallel with the main reporter
+ // and logs all submitted spans. Main Configuration.Logger must be initialized in the code
+ // for this option to have any effect.
+ // Can be set by exporting an environment variable named JAEGER_REPORTER_LOG_SPANS
+ LogSpans bool `yaml:"logSpans"`
+
+ // LocalAgentHostPort instructs reporter to send spans to jaeger-agent at this address
+ // Can be set by exporting an environment variable named JAEGER_AGENT_HOST / JAEGER_AGENT_PORT
+ LocalAgentHostPort string `yaml:"localAgentHostPort"`
+
+ // CollectorEndpoint instructs reporter to send spans to jaeger-collector at this URL
+ // Can be set by exporting an environment variable named JAEGER_ENDPOINT
+ CollectorEndpoint string `yaml:"collectorEndpoint"`
+
+ // User instructs reporter to include a user for basic http authentication when sending spans to jaeger-collector.
+ // Can be set by exporting an environment variable named JAEGER_USER
+ User string `yaml:"user"`
+
+ // Password instructs reporter to include a password for basic http authentication when sending spans to
+ // jaeger-collector. Can be set by exporting an environment variable named JAEGER_PASSWORD
+ Password string `yaml:"password"`
+
+ // HTTPHeaders instructs the reporter to add these headers to the http request when reporting spans.
+ // This field takes effect only when using HTTPTransport by setting the CollectorEndpoint.
+ HTTPHeaders map[string]string `yaml:"http_headers"`
+}
+
+// BaggageRestrictionsConfig configures the baggage restrictions manager which can be used to whitelist
+// certain baggage keys. All fields are optional.
+type BaggageRestrictionsConfig struct {
+ // DenyBaggageOnInitializationFailure controls the startup failure mode of the baggage restriction
+ // manager. If true, the manager will not allow any baggage to be written until baggage restrictions have
+ // been retrieved from jaeger-agent. If false, the manager wil allow any baggage to be written until baggage
+ // restrictions have been retrieved from jaeger-agent.
+ DenyBaggageOnInitializationFailure bool `yaml:"denyBaggageOnInitializationFailure"`
+
+ // HostPort is the hostPort of jaeger-agent's baggage restrictions server
+ HostPort string `yaml:"hostPort"`
+
+ // RefreshInterval controls how often the baggage restriction manager will poll
+ // jaeger-agent for the most recent baggage restrictions.
+ RefreshInterval time.Duration `yaml:"refreshInterval"`
+}
+
+// ThrottlerConfig configures the throttler which can be used to throttle the
+// rate at which the client may send debug requests.
+type ThrottlerConfig struct {
+ // HostPort of jaeger-agent's credit server.
+ HostPort string `yaml:"hostPort"`
+
+ // RefreshInterval controls how often the throttler will poll jaeger-agent
+ // for more throttling credits.
+ RefreshInterval time.Duration `yaml:"refreshInterval"`
+
+ // SynchronousInitialization determines whether or not the throttler should
+ // synchronously fetch credits from the agent when an operation is seen for
+ // the first time. This should be set to true if the client will be used by
+ // a short lived service that needs to ensure that credits are fetched
+ // upfront such that sampling or throttling occurs.
+ SynchronousInitialization bool `yaml:"synchronousInitialization"`
+}
+
+type nullCloser struct{}
+
+func (*nullCloser) Close() error { return nil }
+
+// New creates a new Jaeger Tracer, and a closer func that can be used to flush buffers
+// before shutdown.
+//
+// Deprecated: use NewTracer() function
+func (c Configuration) New(
+ serviceName string,
+ options ...Option,
+) (opentracing.Tracer, io.Closer, error) {
+ if serviceName != "" {
+ c.ServiceName = serviceName
+ }
+
+ return c.NewTracer(options...)
+}
+
+// NewTracer returns a new tracer based on the current configuration, using the given options,
+// and a closer func that can be used to flush buffers before shutdown.
+func (c Configuration) NewTracer(options ...Option) (opentracing.Tracer, io.Closer, error) {
+ if c.Disabled {
+ return &opentracing.NoopTracer{}, &nullCloser{}, nil
+ }
+
+ if c.ServiceName == "" {
+ return nil, nil, errors.New("no service name provided")
+ }
+
+ opts := applyOptions(options...)
+ tracerMetrics := jaeger.NewMetrics(opts.metrics, nil)
+ if c.RPCMetrics {
+ Observer(
+ rpcmetrics.NewObserver(
+ opts.metrics.Namespace(metrics.NSOptions{Name: "jaeger-rpc", Tags: map[string]string{"component": "jaeger"}}),
+ rpcmetrics.DefaultNameNormalizer,
+ ),
+ )(&opts) // adds to c.observers
+ }
+ if c.Sampler == nil {
+ c.Sampler = &SamplerConfig{
+ Type: jaeger.SamplerTypeRemote,
+ Param: defaultSamplingProbability,
+ }
+ }
+ if c.Reporter == nil {
+ c.Reporter = &ReporterConfig{}
+ }
+
+ sampler := opts.sampler
+ if sampler == nil {
+ s, err := c.Sampler.NewSampler(c.ServiceName, tracerMetrics)
+ if err != nil {
+ return nil, nil, err
+ }
+ sampler = s
+ }
+
+ reporter := opts.reporter
+ if reporter == nil {
+ r, err := c.Reporter.NewReporter(c.ServiceName, tracerMetrics, opts.logger)
+ if err != nil {
+ return nil, nil, err
+ }
+ reporter = r
+ }
+
+ tracerOptions := []jaeger.TracerOption{
+ jaeger.TracerOptions.Metrics(tracerMetrics),
+ jaeger.TracerOptions.Logger(opts.logger),
+ jaeger.TracerOptions.CustomHeaderKeys(c.Headers),
+ jaeger.TracerOptions.Gen128Bit(opts.gen128Bit),
+ jaeger.TracerOptions.PoolSpans(opts.poolSpans),
+ jaeger.TracerOptions.ZipkinSharedRPCSpan(opts.zipkinSharedRPCSpan),
+ jaeger.TracerOptions.MaxTagValueLength(opts.maxTagValueLength),
+ jaeger.TracerOptions.NoDebugFlagOnForcedSampling(opts.noDebugFlagOnForcedSampling),
+ }
+
+ for _, tag := range opts.tags {
+ tracerOptions = append(tracerOptions, jaeger.TracerOptions.Tag(tag.Key, tag.Value))
+ }
+
+ for _, tag := range c.Tags {
+ tracerOptions = append(tracerOptions, jaeger.TracerOptions.Tag(tag.Key, tag.Value))
+ }
+
+ for _, obs := range opts.observers {
+ tracerOptions = append(tracerOptions, jaeger.TracerOptions.Observer(obs))
+ }
+
+ for _, cobs := range opts.contribObservers {
+ tracerOptions = append(tracerOptions, jaeger.TracerOptions.ContribObserver(cobs))
+ }
+
+ for format, injector := range opts.injectors {
+ tracerOptions = append(tracerOptions, jaeger.TracerOptions.Injector(format, injector))
+ }
+
+ for format, extractor := range opts.extractors {
+ tracerOptions = append(tracerOptions, jaeger.TracerOptions.Extractor(format, extractor))
+ }
+
+ if c.BaggageRestrictions != nil {
+ mgr := remote.NewRestrictionManager(
+ c.ServiceName,
+ remote.Options.Metrics(tracerMetrics),
+ remote.Options.Logger(opts.logger),
+ remote.Options.HostPort(c.BaggageRestrictions.HostPort),
+ remote.Options.RefreshInterval(c.BaggageRestrictions.RefreshInterval),
+ remote.Options.DenyBaggageOnInitializationFailure(
+ c.BaggageRestrictions.DenyBaggageOnInitializationFailure,
+ ),
+ )
+ tracerOptions = append(tracerOptions, jaeger.TracerOptions.BaggageRestrictionManager(mgr))
+ }
+
+ if c.Throttler != nil {
+ debugThrottler := throttler.NewThrottler(
+ c.ServiceName,
+ throttler.Options.Metrics(tracerMetrics),
+ throttler.Options.Logger(opts.logger),
+ throttler.Options.HostPort(c.Throttler.HostPort),
+ throttler.Options.RefreshInterval(c.Throttler.RefreshInterval),
+ throttler.Options.SynchronousInitialization(
+ c.Throttler.SynchronousInitialization,
+ ),
+ )
+
+ tracerOptions = append(tracerOptions, jaeger.TracerOptions.DebugThrottler(debugThrottler))
+ }
+
+ tracer, closer := jaeger.NewTracer(
+ c.ServiceName,
+ sampler,
+ reporter,
+ tracerOptions...,
+ )
+
+ return tracer, closer, nil
+}
+
+// InitGlobalTracer creates a new Jaeger Tracer, and sets it as global OpenTracing Tracer.
+// It returns a closer func that can be used to flush buffers before shutdown.
+func (c Configuration) InitGlobalTracer(
+ serviceName string,
+ options ...Option,
+) (io.Closer, error) {
+ if c.Disabled {
+ return &nullCloser{}, nil
+ }
+ tracer, closer, err := c.New(serviceName, options...)
+ if err != nil {
+ return nil, err
+ }
+ opentracing.SetGlobalTracer(tracer)
+ return closer, nil
+}
+
+// NewSampler creates a new sampler based on the configuration
+func (sc *SamplerConfig) NewSampler(
+ serviceName string,
+ metrics *jaeger.Metrics,
+) (jaeger.Sampler, error) {
+ samplerType := strings.ToLower(sc.Type)
+ if samplerType == jaeger.SamplerTypeConst {
+ return jaeger.NewConstSampler(sc.Param != 0), nil
+ }
+ if samplerType == jaeger.SamplerTypeProbabilistic {
+ if sc.Param >= 0 && sc.Param <= 1.0 {
+ return jaeger.NewProbabilisticSampler(sc.Param)
+ }
+ return nil, fmt.Errorf(
+ "invalid Param for probabilistic sampler; expecting value between 0 and 1, received %v",
+ sc.Param,
+ )
+ }
+ if samplerType == jaeger.SamplerTypeRateLimiting {
+ return jaeger.NewRateLimitingSampler(sc.Param), nil
+ }
+ if samplerType == jaeger.SamplerTypeRemote || sc.Type == "" {
+ sc2 := *sc
+ sc2.Type = jaeger.SamplerTypeProbabilistic
+ initSampler, err := sc2.NewSampler(serviceName, nil)
+ if err != nil {
+ return nil, err
+ }
+ options := []jaeger.SamplerOption{
+ jaeger.SamplerOptions.Metrics(metrics),
+ jaeger.SamplerOptions.InitialSampler(initSampler),
+ jaeger.SamplerOptions.SamplingServerURL(sc.SamplingServerURL),
+ jaeger.SamplerOptions.MaxOperations(sc.MaxOperations),
+ jaeger.SamplerOptions.OperationNameLateBinding(sc.OperationNameLateBinding),
+ jaeger.SamplerOptions.SamplingRefreshInterval(sc.SamplingRefreshInterval),
+ }
+ options = append(options, sc.Options...)
+ return jaeger.NewRemotelyControlledSampler(serviceName, options...), nil
+ }
+ return nil, fmt.Errorf("unknown sampler type (%s)", sc.Type)
+}
+
+// NewReporter instantiates a new reporter that submits spans to the collector
+func (rc *ReporterConfig) NewReporter(
+ serviceName string,
+ metrics *jaeger.Metrics,
+ logger jaeger.Logger,
+) (jaeger.Reporter, error) {
+ sender, err := rc.newTransport()
+ if err != nil {
+ return nil, err
+ }
+ reporter := jaeger.NewRemoteReporter(
+ sender,
+ jaeger.ReporterOptions.QueueSize(rc.QueueSize),
+ jaeger.ReporterOptions.BufferFlushInterval(rc.BufferFlushInterval),
+ jaeger.ReporterOptions.Logger(logger),
+ jaeger.ReporterOptions.Metrics(metrics))
+ if rc.LogSpans && logger != nil {
+ logger.Infof("Initializing logging reporter\n")
+ reporter = jaeger.NewCompositeReporter(jaeger.NewLoggingReporter(logger), reporter)
+ }
+ return reporter, err
+}
+
+func (rc *ReporterConfig) newTransport() (jaeger.Transport, error) {
+ switch {
+ case rc.CollectorEndpoint != "":
+ httpOptions := []transport.HTTPOption{transport.HTTPBatchSize(1), transport.HTTPHeaders(rc.HTTPHeaders)}
+ if rc.User != "" && rc.Password != "" {
+ httpOptions = append(httpOptions, transport.HTTPBasicAuth(rc.User, rc.Password))
+ }
+ return transport.NewHTTPTransport(rc.CollectorEndpoint, httpOptions...), nil
+ default:
+ return jaeger.NewUDPTransport(rc.LocalAgentHostPort, 0)
+ }
+}
diff --git a/vendor/github.com/uber/jaeger-client-go/config/config_env.go b/vendor/github.com/uber/jaeger-client-go/config/config_env.go
new file mode 100644
index 0000000..a729bd8
--- /dev/null
+++ b/vendor/github.com/uber/jaeger-client-go/config/config_env.go
@@ -0,0 +1,232 @@
+// 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 config
+
+import (
+ "fmt"
+ "net/url"
+ "os"
+ "strconv"
+ "strings"
+ "time"
+
+ "github.com/opentracing/opentracing-go"
+ "github.com/pkg/errors"
+
+ "github.com/uber/jaeger-client-go"
+)
+
+const (
+ // environment variable names
+ envServiceName = "JAEGER_SERVICE_NAME"
+ envDisabled = "JAEGER_DISABLED"
+ envRPCMetrics = "JAEGER_RPC_METRICS"
+ envTags = "JAEGER_TAGS"
+ envSamplerType = "JAEGER_SAMPLER_TYPE"
+ envSamplerParam = "JAEGER_SAMPLER_PARAM"
+ envSamplerManagerHostPort = "JAEGER_SAMPLER_MANAGER_HOST_PORT"
+ envSamplerMaxOperations = "JAEGER_SAMPLER_MAX_OPERATIONS"
+ envSamplerRefreshInterval = "JAEGER_SAMPLER_REFRESH_INTERVAL"
+ envReporterMaxQueueSize = "JAEGER_REPORTER_MAX_QUEUE_SIZE"
+ envReporterFlushInterval = "JAEGER_REPORTER_FLUSH_INTERVAL"
+ envReporterLogSpans = "JAEGER_REPORTER_LOG_SPANS"
+ envEndpoint = "JAEGER_ENDPOINT"
+ envUser = "JAEGER_USER"
+ envPassword = "JAEGER_PASSWORD"
+ envAgentHost = "JAEGER_AGENT_HOST"
+ envAgentPort = "JAEGER_AGENT_PORT"
+)
+
+// FromEnv uses environment variables to set the tracer's Configuration
+func FromEnv() (*Configuration, error) {
+ c := &Configuration{}
+ return c.FromEnv()
+}
+
+// FromEnv uses environment variables and overrides existing tracer's Configuration
+func (c *Configuration) FromEnv() (*Configuration, error) {
+ if e := os.Getenv(envServiceName); e != "" {
+ c.ServiceName = e
+ }
+
+ if e := os.Getenv(envRPCMetrics); e != "" {
+ if value, err := strconv.ParseBool(e); err == nil {
+ c.RPCMetrics = value
+ } else {
+ return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envRPCMetrics, e)
+ }
+ }
+
+ if e := os.Getenv(envDisabled); e != "" {
+ if value, err := strconv.ParseBool(e); err == nil {
+ c.Disabled = value
+ } else {
+ return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envDisabled, e)
+ }
+ }
+
+ if e := os.Getenv(envTags); e != "" {
+ c.Tags = parseTags(e)
+ }
+
+ if c.Sampler == nil {
+ c.Sampler = &SamplerConfig{}
+ }
+
+ if s, err := c.Sampler.samplerConfigFromEnv(); err == nil {
+ c.Sampler = s
+ } else {
+ return nil, errors.Wrap(err, "cannot obtain sampler config from env")
+ }
+
+ if c.Reporter == nil {
+ c.Reporter = &ReporterConfig{}
+ }
+
+ if r, err := c.Reporter.reporterConfigFromEnv(); err == nil {
+ c.Reporter = r
+ } else {
+ return nil, errors.Wrap(err, "cannot obtain reporter config from env")
+ }
+
+ return c, nil
+}
+
+// samplerConfigFromEnv creates a new SamplerConfig based on the environment variables
+func (sc *SamplerConfig) samplerConfigFromEnv() (*SamplerConfig, error) {
+ if e := os.Getenv(envSamplerType); e != "" {
+ sc.Type = e
+ }
+
+ if e := os.Getenv(envSamplerParam); e != "" {
+ if value, err := strconv.ParseFloat(e, 64); err == nil {
+ sc.Param = value
+ } else {
+ return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envSamplerParam, e)
+ }
+ }
+
+ if e := os.Getenv(envSamplerManagerHostPort); e != "" {
+ sc.SamplingServerURL = e
+ } else if e := os.Getenv(envAgentHost); e != "" {
+ // Fallback if we know the agent host - try the sampling endpoint there
+ sc.SamplingServerURL = fmt.Sprintf("http://%s:%d/sampling", e, jaeger.DefaultSamplingServerPort)
+ }
+
+ if e := os.Getenv(envSamplerMaxOperations); e != "" {
+ if value, err := strconv.ParseInt(e, 10, 0); err == nil {
+ sc.MaxOperations = int(value)
+ } else {
+ return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envSamplerMaxOperations, e)
+ }
+ }
+
+ if e := os.Getenv(envSamplerRefreshInterval); e != "" {
+ if value, err := time.ParseDuration(e); err == nil {
+ sc.SamplingRefreshInterval = value
+ } else {
+ return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envSamplerRefreshInterval, e)
+ }
+ }
+
+ return sc, nil
+}
+
+// reporterConfigFromEnv creates a new ReporterConfig based on the environment variables
+func (rc *ReporterConfig) reporterConfigFromEnv() (*ReporterConfig, error) {
+ if e := os.Getenv(envReporterMaxQueueSize); e != "" {
+ if value, err := strconv.ParseInt(e, 10, 0); err == nil {
+ rc.QueueSize = int(value)
+ } else {
+ return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envReporterMaxQueueSize, e)
+ }
+ }
+
+ if e := os.Getenv(envReporterFlushInterval); e != "" {
+ if value, err := time.ParseDuration(e); err == nil {
+ rc.BufferFlushInterval = value
+ } else {
+ return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envReporterFlushInterval, e)
+ }
+ }
+
+ if e := os.Getenv(envReporterLogSpans); e != "" {
+ if value, err := strconv.ParseBool(e); err == nil {
+ rc.LogSpans = value
+ } else {
+ return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envReporterLogSpans, e)
+ }
+ }
+
+ if e := os.Getenv(envEndpoint); e != "" {
+ u, err := url.ParseRequestURI(e)
+ if err != nil {
+ return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envEndpoint, e)
+ }
+ rc.CollectorEndpoint = u.String()
+ user := os.Getenv(envUser)
+ pswd := os.Getenv(envPassword)
+ if user != "" && pswd == "" || user == "" && pswd != "" {
+ return nil, errors.Errorf("you must set %s and %s env vars together", envUser, envPassword)
+ }
+ rc.User = user
+ rc.Password = pswd
+ } else {
+ host := jaeger.DefaultUDPSpanServerHost
+ if e := os.Getenv(envAgentHost); e != "" {
+ host = e
+ }
+
+ port := jaeger.DefaultUDPSpanServerPort
+ if e := os.Getenv(envAgentPort); e != "" {
+ if value, err := strconv.ParseInt(e, 10, 0); err == nil {
+ port = int(value)
+ } else {
+ return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envAgentPort, e)
+ }
+ }
+ rc.LocalAgentHostPort = fmt.Sprintf("%s:%d", host, port)
+ }
+
+ return rc, nil
+}
+
+// parseTags parses the given string into a collection of Tags.
+// Spec for this value:
+// - comma separated list of key=value
+// - value can be specified using the notation ${envVar:defaultValue}, where `envVar`
+// is an environment variable and `defaultValue` is the value to use in case the env var is not set
+func parseTags(sTags string) []opentracing.Tag {
+ pairs := strings.Split(sTags, ",")
+ tags := make([]opentracing.Tag, 0)
+ for _, p := range pairs {
+ kv := strings.SplitN(p, "=", 2)
+ k, v := strings.TrimSpace(kv[0]), strings.TrimSpace(kv[1])
+
+ if strings.HasPrefix(v, "${") && strings.HasSuffix(v, "}") {
+ ed := strings.SplitN(v[2:len(v)-1], ":", 2)
+ e, d := ed[0], ed[1]
+ v = os.Getenv(e)
+ if v == "" && d != "" {
+ v = d
+ }
+ }
+
+ tag := opentracing.Tag{Key: k, Value: v}
+ tags = append(tags, tag)
+ }
+
+ return tags
+}
diff --git a/vendor/github.com/uber/jaeger-client-go/config/options.go b/vendor/github.com/uber/jaeger-client-go/config/options.go
new file mode 100644
index 0000000..e0e50e8
--- /dev/null
+++ b/vendor/github.com/uber/jaeger-client-go/config/options.go
@@ -0,0 +1,165 @@
+// Copyright (c) 2017 Uber Technologies, Inc.
+//
+// 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 config
+
+import (
+ opentracing "github.com/opentracing/opentracing-go"
+ "github.com/uber/jaeger-lib/metrics"
+
+ "github.com/uber/jaeger-client-go"
+)
+
+// Option is a function that sets some option on the client.
+type Option func(c *Options)
+
+// Options control behavior of the client.
+type Options struct {
+ metrics metrics.Factory
+ logger jaeger.Logger
+ reporter jaeger.Reporter
+ sampler jaeger.Sampler
+ contribObservers []jaeger.ContribObserver
+ observers []jaeger.Observer
+ gen128Bit bool
+ poolSpans bool
+ zipkinSharedRPCSpan bool
+ maxTagValueLength int
+ noDebugFlagOnForcedSampling bool
+ tags []opentracing.Tag
+ injectors map[interface{}]jaeger.Injector
+ extractors map[interface{}]jaeger.Extractor
+}
+
+// Metrics creates an Option that initializes Metrics in the tracer,
+// which is used to emit statistics about spans.
+func Metrics(factory metrics.Factory) Option {
+ return func(c *Options) {
+ c.metrics = factory
+ }
+}
+
+// Logger can be provided to log Reporter errors, as well as to log spans
+// if Reporter.LogSpans is set to true.
+func Logger(logger jaeger.Logger) Option {
+ return func(c *Options) {
+ c.logger = logger
+ }
+}
+
+// Reporter can be provided explicitly to override the configuration.
+// Useful for testing, e.g. by passing InMemoryReporter.
+func Reporter(reporter jaeger.Reporter) Option {
+ return func(c *Options) {
+ c.reporter = reporter
+ }
+}
+
+// Sampler can be provided explicitly to override the configuration.
+func Sampler(sampler jaeger.Sampler) Option {
+ return func(c *Options) {
+ c.sampler = sampler
+ }
+}
+
+// Observer can be registered with the Tracer to receive notifications about new Spans.
+func Observer(observer jaeger.Observer) Option {
+ return func(c *Options) {
+ c.observers = append(c.observers, observer)
+ }
+}
+
+// ContribObserver can be registered with the Tracer to receive notifications
+// about new spans.
+func ContribObserver(observer jaeger.ContribObserver) Option {
+ return func(c *Options) {
+ c.contribObservers = append(c.contribObservers, observer)
+ }
+}
+
+// Gen128Bit specifies whether to generate 128bit trace IDs.
+func Gen128Bit(gen128Bit bool) Option {
+ return func(c *Options) {
+ c.gen128Bit = gen128Bit
+ }
+}
+
+// PoolSpans specifies whether to pool spans
+func PoolSpans(poolSpans bool) Option {
+ return func(c *Options) {
+ c.poolSpans = poolSpans
+ }
+}
+
+// ZipkinSharedRPCSpan creates an option that enables sharing span ID between client
+// and server spans a la zipkin. If false, client and server spans will be assigned
+// different IDs.
+func ZipkinSharedRPCSpan(zipkinSharedRPCSpan bool) Option {
+ return func(c *Options) {
+ c.zipkinSharedRPCSpan = zipkinSharedRPCSpan
+ }
+}
+
+// MaxTagValueLength can be provided to override the default max tag value length.
+func MaxTagValueLength(maxTagValueLength int) Option {
+ return func(c *Options) {
+ c.maxTagValueLength = maxTagValueLength
+ }
+}
+
+// NoDebugFlagOnForcedSampling can be used to decide whether debug flag will be set or not
+// when calling span.setSamplingPriority to force sample a span.
+func NoDebugFlagOnForcedSampling(noDebugFlagOnForcedSampling bool) Option {
+ return func(c *Options) {
+ c.noDebugFlagOnForcedSampling = noDebugFlagOnForcedSampling
+ }
+}
+
+// Tag creates an option that adds a tracer-level tag.
+func Tag(key string, value interface{}) Option {
+ return func(c *Options) {
+ c.tags = append(c.tags, opentracing.Tag{Key: key, Value: value})
+ }
+}
+
+// Injector registers an Injector with the given format.
+func Injector(format interface{}, injector jaeger.Injector) Option {
+ return func(c *Options) {
+ c.injectors[format] = injector
+ }
+}
+
+// Extractor registers an Extractor with the given format.
+func Extractor(format interface{}, extractor jaeger.Extractor) Option {
+ return func(c *Options) {
+ c.extractors[format] = extractor
+ }
+}
+
+func applyOptions(options ...Option) Options {
+ opts := Options{
+ injectors: make(map[interface{}]jaeger.Injector),
+ extractors: make(map[interface{}]jaeger.Extractor),
+ }
+ for _, option := range options {
+ option(&opts)
+ }
+ if opts.metrics == nil {
+ opts.metrics = metrics.NullFactory
+ }
+ if opts.logger == nil {
+ opts.logger = jaeger.NullLogger
+ }
+ return opts
+}