diff options
Diffstat (limited to 'kube2msb/src/vendor/github.com/prometheus/common/expfmt/json_decode.go')
-rw-r--r-- | kube2msb/src/vendor/github.com/prometheus/common/expfmt/json_decode.go | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/kube2msb/src/vendor/github.com/prometheus/common/expfmt/json_decode.go b/kube2msb/src/vendor/github.com/prometheus/common/expfmt/json_decode.go deleted file mode 100644 index cf86545..0000000 --- a/kube2msb/src/vendor/github.com/prometheus/common/expfmt/json_decode.go +++ /dev/null @@ -1,174 +0,0 @@ -// Copyright 2015 The Prometheus 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 expfmt - -import ( - "encoding/json" - "fmt" - "io" - "sort" - - "github.com/golang/protobuf/proto" - dto "github.com/prometheus/client_model/go" - - "github.com/prometheus/common/model" -) - -type json2Decoder struct { - dec *json.Decoder - fams []*dto.MetricFamily -} - -func newJSON2Decoder(r io.Reader) Decoder { - return &json2Decoder{ - dec: json.NewDecoder(r), - } -} - -type histogram002 struct { - Labels model.LabelSet `json:"labels"` - Values map[string]float64 `json:"value"` -} - -type counter002 struct { - Labels model.LabelSet `json:"labels"` - Value float64 `json:"value"` -} - -func protoLabelSet(base, ext model.LabelSet) ([]*dto.LabelPair, error) { - labels := base.Clone().Merge(ext) - delete(labels, model.MetricNameLabel) - - names := make([]string, 0, len(labels)) - for ln := range labels { - names = append(names, string(ln)) - } - sort.Strings(names) - - pairs := make([]*dto.LabelPair, 0, len(labels)) - - for _, ln := range names { - if !model.LabelNameRE.MatchString(ln) { - return nil, fmt.Errorf("invalid label name %q", ln) - } - lv := labels[model.LabelName(ln)] - - pairs = append(pairs, &dto.LabelPair{ - Name: proto.String(ln), - Value: proto.String(string(lv)), - }) - } - - return pairs, nil -} - -func (d *json2Decoder) more() error { - var entities []struct { - BaseLabels model.LabelSet `json:"baseLabels"` - Docstring string `json:"docstring"` - Metric struct { - Type string `json:"type"` - Values json.RawMessage `json:"value"` - } `json:"metric"` - } - - if err := d.dec.Decode(&entities); err != nil { - return err - } - for _, e := range entities { - f := &dto.MetricFamily{ - Name: proto.String(string(e.BaseLabels[model.MetricNameLabel])), - Help: proto.String(e.Docstring), - Type: dto.MetricType_UNTYPED.Enum(), - Metric: []*dto.Metric{}, - } - - d.fams = append(d.fams, f) - - switch e.Metric.Type { - case "counter", "gauge": - var values []counter002 - - if err := json.Unmarshal(e.Metric.Values, &values); err != nil { - return fmt.Errorf("could not extract %s value: %s", e.Metric.Type, err) - } - - for _, ctr := range values { - labels, err := protoLabelSet(e.BaseLabels, ctr.Labels) - if err != nil { - return err - } - f.Metric = append(f.Metric, &dto.Metric{ - Label: labels, - Untyped: &dto.Untyped{ - Value: proto.Float64(ctr.Value), - }, - }) - } - - case "histogram": - var values []histogram002 - - if err := json.Unmarshal(e.Metric.Values, &values); err != nil { - return fmt.Errorf("could not extract %s value: %s", e.Metric.Type, err) - } - - for _, hist := range values { - quants := make([]string, 0, len(values)) - for q := range hist.Values { - quants = append(quants, q) - } - - sort.Strings(quants) - - for _, q := range quants { - value := hist.Values[q] - // The correct label is "quantile" but to not break old expressions - // this remains "percentile" - hist.Labels["percentile"] = model.LabelValue(q) - - labels, err := protoLabelSet(e.BaseLabels, hist.Labels) - if err != nil { - return err - } - - f.Metric = append(f.Metric, &dto.Metric{ - Label: labels, - Untyped: &dto.Untyped{ - Value: proto.Float64(value), - }, - }) - } - } - - default: - return fmt.Errorf("unknown metric type %q", e.Metric.Type) - } - } - return nil -} - -// Decode implements the Decoder interface. -func (d *json2Decoder) Decode(v *dto.MetricFamily) error { - if len(d.fams) == 0 { - if err := d.more(); err != nil { - return err - } - } - - *v = *d.fams[0] - d.fams = d.fams[1:] - - return nil -} |