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117 lines
3.1 KiB
117 lines
3.1 KiB
// Copyright 2013 Prometheus Team |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// Dumper is responsible for dumping all samples along with metadata contained |
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// in a given Prometheus metrics storage. It prints samples in unquoted CSV |
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// format, with commas as field separators: |
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// |
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// <fingerprint>,<chunk_first_time>,<chunk_last_time>,<chunk_sample_count>,<chunk_index>,<timestamp>,<value> |
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package main |
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import ( |
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"encoding/csv" |
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"flag" |
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"fmt" |
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"log" |
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"os" |
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"strconv" |
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"code.google.com/p/goprotobuf/proto" |
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dto "github.com/prometheus/prometheus/model/generated" |
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"github.com/prometheus/prometheus/model" |
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"github.com/prometheus/prometheus/storage" |
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"github.com/prometheus/prometheus/storage/metric" |
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) |
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var ( |
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storageRoot = flag.String("storage.root", "", "The path to the storage root for Prometheus.") |
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) |
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type SamplesDumper struct { |
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*csv.Writer |
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} |
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func (d SamplesDumper) DecodeKey(in interface{}) (interface{}, error) { |
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key := &dto.SampleKey{} |
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err := proto.Unmarshal(in.([]byte), key) |
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if err != nil { |
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return nil, err |
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} |
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return model.NewSampleKeyFromDTO(key), nil |
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} |
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func (d SamplesDumper) DecodeValue(in interface{}) (interface{}, error) { |
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values := &dto.SampleValueSeries{} |
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err := proto.Unmarshal(in.([]byte), values) |
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if err != nil { |
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return nil, err |
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} |
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return model.NewValuesFromDTO(values), nil |
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} |
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func (d SamplesDumper) Filter(_, _ interface{}) storage.FilterResult { |
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return storage.ACCEPT |
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} |
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func (d SamplesDumper) Operate(key, value interface{}) *storage.OperatorError { |
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sampleKey := key.(model.SampleKey) |
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for i, sample := range value.(model.Values) { |
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d.Write([]string{ |
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sampleKey.Fingerprint.String(), |
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strconv.FormatInt(sampleKey.FirstTimestamp.Unix(), 10), |
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strconv.FormatInt(sampleKey.LastTimestamp.Unix(), 10), |
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strconv.FormatUint(uint64(sampleKey.SampleCount), 10), |
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strconv.Itoa(i), |
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strconv.FormatInt(sample.Timestamp.Unix(), 10), |
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fmt.Sprintf("%v", sample.Value), |
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}) |
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if err := d.Error(); err != nil { |
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return &storage.OperatorError{ |
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error: err, |
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Continuable: false, |
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} |
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} |
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} |
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return nil |
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} |
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func main() { |
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flag.Parse() |
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if storageRoot == nil || *storageRoot == "" { |
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log.Fatal("Must provide a path...") |
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} |
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persistence, err := metric.NewLevelDBMetricPersistence(*storageRoot) |
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if err != nil { |
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log.Fatal(err) |
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} |
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defer persistence.Close() |
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dumper := SamplesDumper{csv.NewWriter(os.Stdout)} |
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entire, err := persistence.MetricSamples.ForEach(dumper, dumper, dumper) |
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if err != nil { |
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log.Fatalf("Error dumping samples: %s", err) |
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} |
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if !entire { |
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log.Fatalf("Didn't scan entire corpus") |
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} |
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dumper.Flush() |
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if err = dumper.Error(); err != nil { |
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log.Fatalf("Error flushing CSV: %s", err) |
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} |
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}
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