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metrics.go
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/
metrics.go
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// Copyright 2020 The LUCI 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 spanutil
import (
"context"
"go.chromium.org/luci/common/tsmon/field"
"go.chromium.org/luci/common/tsmon/metric"
)
// RowStatus is a status of a row.
// Used in metrics.
type RowStatus string
// Values of RowStatus type.
const (
Inserted RowStatus = "INSERTED"
Deleted RowStatus = "DELETED"
)
var rowCounter = metric.NewCounter(
"resultdb/spanner/rows",
"Number of Spanner rows",
nil,
field.String("table"), // See Table type.
field.String("status"), // See RowStatus type.
field.String("realm"), // Invocation realm
)
// Table identifies a Spanner table.
// Used in metrics.
type Table string
// Values of Table type.
const (
TestResults Table = "TestResults"
Invocations Table = "Invocations"
)
// IncRowCount increments the row counter.
func IncRowCount(ctx context.Context, count int, table Table, rowStatus RowStatus, realm string) {
rowCounter.Add(ctx, int64(count), string(table), string(rowStatus), realm)
}