3 files changed, 140 insertions, 0 deletions
diff --git a/vendor/go.opencensus.io/internal/internal.go b/vendor/go.opencensus.io/internal/internal.go
new file mode 100644
index 000000000..9a638781c
--- /dev/null
+++ b/vendor/go.opencensus.io/internal/internal.go
@@ -0,0 +1,37 @@
+// Copyright 2017, 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 internal // import "go.opencensus.io/internal"
+
+import (
+	"fmt"
+	"time"
+
+	opencensus "go.opencensus.io"
+)
+
+// UserAgent is the user agent to be added to the outgoing
+// requests from the exporters.
+var UserAgent = fmt.Sprintf("opencensus-go/%s", opencensus.Version())
+
+// MonotonicEndTime returns the end time at present
+// but offset from start, monotonically.
+//
+// The monotonic clock is used in subtractions hence
+// the duration since start added back to start gives
+// end as a monotonic time.
+// See https://golang.org/pkg/time/#hdr-Monotonic_Clocks
+func MonotonicEndTime(start time.Time) time.Time {
+	return start.Add(time.Now().Sub(start))
+}
diff --git a/vendor/go.opencensus.io/internal/sanitize.go b/vendor/go.opencensus.io/internal/sanitize.go
new file mode 100644
index 000000000..de8ccf236
--- /dev/null
+++ b/vendor/go.opencensus.io/internal/sanitize.go
@@ -0,0 +1,50 @@
+// Copyright 2017, 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 internal
+
+import (
+	"strings"
+	"unicode"
+)
+
+const labelKeySizeLimit = 100
+
+// Sanitize returns a string that is trunacated to 100 characters if it's too
+// long, and replaces non-alphanumeric characters to underscores.
+func Sanitize(s string) string {
+	if len(s) == 0 {
+		return s
+	}
+	if len(s) > labelKeySizeLimit {
+		s = s[:labelKeySizeLimit]
+	}
+	s = strings.Map(sanitizeRune, s)
+	if unicode.IsDigit(rune(s[0])) {
+		s = "key_" + s
+	}
+	if s[0] == '_' {
+		s = "key" + s
+	}
+	return s
+}
+
+// converts anything that is not a letter or digit to an underscore
+func sanitizeRune(r rune) rune {
+	if unicode.IsLetter(r) || unicode.IsDigit(r) {
+		return r
+	}
+	// Everything else turns into an underscore
+	return '_'
+}
diff --git a/vendor/go.opencensus.io/internal/traceinternals.go b/vendor/go.opencensus.io/internal/traceinternals.go
new file mode 100644
index 000000000..073af7b47
--- /dev/null
+++ b/vendor/go.opencensus.io/internal/traceinternals.go
@@ -0,0 +1,53 @@
+// Copyright 2017, 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 internal
+
+import (
+	"time"
+)
+
+// Trace allows internal access to some trace functionality.
+// TODO(#412): remove this
+var Trace interface{}
+
+// LocalSpanStoreEnabled true if the local span store is enabled.
+var LocalSpanStoreEnabled bool
+
+// BucketConfiguration stores the number of samples to store for span buckets
+// for successful and failed spans for a particular span name.
+type BucketConfiguration struct {
+	Name                 string
+	MaxRequestsSucceeded int
+	MaxRequestsErrors    int
+}
+
+// PerMethodSummary is a summary of the spans stored for a single span name.
+type PerMethodSummary struct {
+	Active         int
+	LatencyBuckets []LatencyBucketSummary
+	ErrorBuckets   []ErrorBucketSummary
+}
+
+// LatencyBucketSummary is a summary of a latency bucket.
+type LatencyBucketSummary struct {
+	MinLatency, MaxLatency time.Duration
+	Size                   int
+}
+
+// ErrorBucketSummary is a summary of an error bucket.
+type ErrorBucketSummary struct {
+	ErrorCode int32
+	Size      int
+}