[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/uber/jaeger-client-go/thrift/header_context.go b/vendor/github.com/uber/jaeger-client-go/thrift/header_context.go
new file mode 100644
index 0000000..ac9bd48
--- /dev/null
+++ b/vendor/github.com/uber/jaeger-client-go/thrift/header_context.go
@@ -0,0 +1,110 @@
+/*
+ * Licensed to the 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. The 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 thrift
+
+import (
+ "context"
+)
+
+// See https://godoc.org/context#WithValue on why do we need the unexported typedefs.
+type (
+ headerKey string
+ headerKeyList int
+)
+
+// Values for headerKeyList.
+const (
+ headerKeyListRead headerKeyList = iota
+ headerKeyListWrite
+)
+
+// SetHeader sets a header in the context.
+func SetHeader(ctx context.Context, key, value string) context.Context {
+ return context.WithValue(
+ ctx,
+ headerKey(key),
+ value,
+ )
+}
+
+// UnsetHeader unsets a previously set header in the context.
+func UnsetHeader(ctx context.Context, key string) context.Context {
+ return context.WithValue(
+ ctx,
+ headerKey(key),
+ nil,
+ )
+}
+
+// GetHeader returns a value of the given header from the context.
+func GetHeader(ctx context.Context, key string) (value string, ok bool) {
+ if v := ctx.Value(headerKey(key)); v != nil {
+ value, ok = v.(string)
+ }
+ return
+}
+
+// SetReadHeaderList sets the key list of read THeaders in the context.
+func SetReadHeaderList(ctx context.Context, keys []string) context.Context {
+ return context.WithValue(
+ ctx,
+ headerKeyListRead,
+ keys,
+ )
+}
+
+// GetReadHeaderList returns the key list of read THeaders from the context.
+func GetReadHeaderList(ctx context.Context) []string {
+ if v := ctx.Value(headerKeyListRead); v != nil {
+ if value, ok := v.([]string); ok {
+ return value
+ }
+ }
+ return nil
+}
+
+// SetWriteHeaderList sets the key list of THeaders to write in the context.
+func SetWriteHeaderList(ctx context.Context, keys []string) context.Context {
+ return context.WithValue(
+ ctx,
+ headerKeyListWrite,
+ keys,
+ )
+}
+
+// GetWriteHeaderList returns the key list of THeaders to write from the context.
+func GetWriteHeaderList(ctx context.Context) []string {
+ if v := ctx.Value(headerKeyListWrite); v != nil {
+ if value, ok := v.([]string); ok {
+ return value
+ }
+ }
+ return nil
+}
+
+// AddReadTHeaderToContext adds the whole THeader headers into context.
+func AddReadTHeaderToContext(ctx context.Context, headers THeaderMap) context.Context {
+ keys := make([]string, 0, len(headers))
+ for key, value := range headers {
+ ctx = SetHeader(ctx, key, value)
+ keys = append(keys, key)
+ }
+ return SetReadHeaderList(ctx, keys)
+}