[VOL-3187]Pass Context down the execution call hierarchy across ofagent codebase
Change-Id: Ia5f2fa1509beefe0ddc427b83e39d2702782db8f
diff --git a/vendor/github.com/uber/jaeger-client-go/constants.go b/vendor/github.com/uber/jaeger-client-go/constants.go
new file mode 100644
index 0000000..1f8578f
--- /dev/null
+++ b/vendor/github.com/uber/jaeger-client-go/constants.go
@@ -0,0 +1,106 @@
+// 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 jaeger
+
+import (
+ "fmt"
+
+ "github.com/opentracing/opentracing-go"
+)
+
+const (
+ // JaegerClientVersion is the version of the client library reported as Span tag.
+ JaegerClientVersion = "Go-2.23.1"
+
+ // JaegerClientVersionTagKey is the name of the tag used to report client version.
+ JaegerClientVersionTagKey = "jaeger.version"
+
+ // JaegerDebugHeader is the name of HTTP header or a TextMap carrier key which,
+ // if found in the carrier, forces the trace to be sampled as "debug" trace.
+ // The value of the header is recorded as the tag on the root span, so that the
+ // trace can be found in the UI using this value as a correlation ID.
+ JaegerDebugHeader = "jaeger-debug-id"
+
+ // JaegerBaggageHeader is the name of the HTTP header that is used to submit baggage.
+ // It differs from TraceBaggageHeaderPrefix in that it can be used only in cases where
+ // a root span does not exist.
+ JaegerBaggageHeader = "jaeger-baggage"
+
+ // TracerHostnameTagKey used to report host name of the process.
+ TracerHostnameTagKey = "hostname"
+
+ // TracerIPTagKey used to report ip of the process.
+ TracerIPTagKey = "ip"
+
+ // TracerUUIDTagKey used to report UUID of the client process.
+ TracerUUIDTagKey = "client-uuid"
+
+ // SamplerTypeTagKey reports which sampler was used on the root span.
+ SamplerTypeTagKey = "sampler.type"
+
+ // SamplerParamTagKey reports the parameter of the sampler, like sampling probability.
+ SamplerParamTagKey = "sampler.param"
+
+ // TraceContextHeaderName is the http header name used to propagate tracing context.
+ // This must be in lower-case to avoid mismatches when decoding incoming headers.
+ TraceContextHeaderName = "uber-trace-id"
+
+ // TracerStateHeaderName is deprecated.
+ // Deprecated: use TraceContextHeaderName
+ TracerStateHeaderName = TraceContextHeaderName
+
+ // TraceBaggageHeaderPrefix is the prefix for http headers used to propagate baggage.
+ // This must be in lower-case to avoid mismatches when decoding incoming headers.
+ TraceBaggageHeaderPrefix = "uberctx-"
+
+ // SamplerTypeConst is the type of sampler that always makes the same decision.
+ SamplerTypeConst = "const"
+
+ // SamplerTypeRemote is the type of sampler that polls Jaeger agent for sampling strategy.
+ SamplerTypeRemote = "remote"
+
+ // SamplerTypeProbabilistic is the type of sampler that samples traces
+ // with a certain fixed probability.
+ SamplerTypeProbabilistic = "probabilistic"
+
+ // SamplerTypeRateLimiting is the type of sampler that samples
+ // only up to a fixed number of traces per second.
+ SamplerTypeRateLimiting = "ratelimiting"
+
+ // SamplerTypeLowerBound is the type of sampler that samples
+ // at least a fixed number of traces per second.
+ SamplerTypeLowerBound = "lowerbound"
+
+ // DefaultUDPSpanServerHost is the default host to send the spans to, via UDP
+ DefaultUDPSpanServerHost = "localhost"
+
+ // DefaultUDPSpanServerPort is the default port to send the spans to, via UDP
+ DefaultUDPSpanServerPort = 6831
+
+ // DefaultSamplingServerPort is the default port to fetch sampling config from, via http
+ DefaultSamplingServerPort = 5778
+
+ // DefaultMaxTagValueLength is the default max length of byte array or string allowed in the tag value.
+ DefaultMaxTagValueLength = 256
+
+ // SelfRefType is a jaeger specific reference type that supports creating a span
+ // with an already defined context.
+ selfRefType opentracing.SpanReferenceType = 99
+)
+
+var (
+ // DefaultSamplingServerURL is the default url to fetch sampling config from, via http
+ DefaultSamplingServerURL = fmt.Sprintf("http://localhost:%d/sampling", DefaultSamplingServerPort)
+)