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metrics.go
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metrics.go
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// Copyright The OpenTelemetry 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 kafkareceiver
import (
"go.opencensus.io/stats"
"go.opencensus.io/stats/view"
"go.opencensus.io/tag"
)
var (
tagInstanceName, _ = tag.NewKey("name")
statMessageCount = stats.Int64("kafka_receiver_messages", "Number of received messages", stats.UnitDimensionless)
statMessageOffset = stats.Int64("kafka_receiver_current_offset", "Current message offset", stats.UnitDimensionless)
statMessageOffsetLag = stats.Int64("kafka_receiver_offset_lag", "Current offset lag", stats.UnitDimensionless)
statPartitionStart = stats.Int64("kafka_receiver_partition_start", "Number of started partitions", stats.UnitDimensionless)
statPartitionClose = stats.Int64("kafka_receiver_partition_close", "Number of finished partitions", stats.UnitDimensionless)
)
// MetricViews return metric views for Kafka receiver.
func MetricViews() []*view.View {
tagKeys := []tag.Key{tagInstanceName}
countMessages := &view.View{
Name: statMessageCount.Name(),
Measure: statMessageCount,
Description: statMessageCount.Description(),
TagKeys: tagKeys,
Aggregation: view.Sum(),
}
lastValueOffset := &view.View{
Name: statMessageOffset.Name(),
Measure: statMessageOffset,
Description: statMessageOffset.Description(),
TagKeys: tagKeys,
Aggregation: view.LastValue(),
}
lastValueOffsetLag := &view.View{
Name: statMessageOffsetLag.Name(),
Measure: statMessageOffsetLag,
Description: statMessageOffsetLag.Description(),
TagKeys: tagKeys,
Aggregation: view.LastValue(),
}
countPartitionStart := &view.View{
Name: statPartitionStart.Name(),
Measure: statPartitionStart,
Description: statPartitionStart.Description(),
TagKeys: tagKeys,
Aggregation: view.Sum(),
}
countPartitionClose := &view.View{
Name: statPartitionClose.Name(),
Measure: statPartitionClose,
Description: statPartitionClose.Description(),
TagKeys: tagKeys,
Aggregation: view.Sum(),
}
return []*view.View{
countMessages,
lastValueOffset,
lastValueOffsetLag,
countPartitionStart,
countPartitionClose,
}
}