1 files changed, 48 insertions, 0 deletions

diff --git a/vendor/go.opencensus.io/trace/config.go b/vendor/go.opencensus.io/trace/config.go
new file mode 100644
index 0000000..0816892
--- /dev/null
+++ b/vendor/go.opencensus.io/trace/config.go
@@ -0,0 +1,48 @@
+// Copyright 2018, OpenCensus 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 trace
+
+import (
+        "sync"
+
+        "go.opencensus.io/trace/internal"
+)
+
+// Config represents the global tracing configuration.
+type Config struct {
+        // DefaultSampler is the default sampler used when creating new spans.
+        DefaultSampler Sampler
+
+        // IDGenerator is for internal use only.
+        IDGenerator internal.IDGenerator
+}
+
+var configWriteMu sync.Mutex
+
+// ApplyConfig applies changes to the global tracing configuration.
+//
+// Fields not provided in the given config are going to be preserved.
+func ApplyConfig(cfg Config) {
+        configWriteMu.Lock()
+        defer configWriteMu.Unlock()
+        c := *config.Load().(*Config)
+        if cfg.DefaultSampler != nil {
+                c.DefaultSampler = cfg.DefaultSampler
+        }
+        if cfg.IDGenerator != nil {
+                c.IDGenerator = cfg.IDGenerator
+        }
+        config.Store(&c)
+}