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reader.go
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reader.go
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// Copyright (c) 2021 The Jaeger 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 disabled
import (
"context"
"time"
"github.com/jaegertracing/jaeger/proto-gen/api_v2/metrics"
"github.com/jaegertracing/jaeger/storage/metricsstore"
)
type (
// MetricsReader represents a "disabled" metricsstore.Reader implementation where
// the METRICS_STORAGE_TYPE has not been set.
MetricsReader struct{}
// errMetricsQueryDisabledError is the error returned by disabledMetricsQueryService.
errMetricsQueryDisabledError struct{}
)
// ErrDisabled is the error returned by a "disabled" MetricsQueryService on all of its endpoints.
var ErrDisabled = &errMetricsQueryDisabledError{}
func (m *errMetricsQueryDisabledError) Error() string {
return "metrics querying is currently disabled"
}
// NewMetricsReader returns a new Disabled MetricsReader.
func NewMetricsReader() (*MetricsReader, error) {
return &MetricsReader{}, nil
}
// GetLatencies gets the latency metrics for the given set of latency query parameters.
func (m *MetricsReader) GetLatencies(ctx context.Context, requestParams *metricsstore.LatenciesQueryParameters) (*metrics.MetricFamily, error) {
return nil, ErrDisabled
}
// GetCallRates gets the call rate metrics for the given set of call rate query parameters.
func (m *MetricsReader) GetCallRates(ctx context.Context, requestParams *metricsstore.CallRateQueryParameters) (*metrics.MetricFamily, error) {
return nil, ErrDisabled
}
// GetErrorRates gets the error rate metrics for the given set of error rate query parameters.
func (m *MetricsReader) GetErrorRates(ctx context.Context, requestParams *metricsstore.ErrorRateQueryParameters) (*metrics.MetricFamily, error) {
return nil, ErrDisabled
}
// GetMinStepDuration gets the minimum step duration (the smallest possible duration between two data points in a time series) supported.
func (m *MetricsReader) GetMinStepDuration(_ context.Context, _ *metricsstore.MinStepDurationQueryParameters) (time.Duration, error) {
return 0, ErrDisabled
}