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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,198 @@ | ||
| /* | ||
| * | ||
| * k6 - a next-generation load testing tool | ||
| * Copyright (C) 2021 Load Impact | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Affero General Public License as | ||
| * published by the Free Software Foundation, either version 3 of the | ||
| * License, or (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| * | ||
| */ | ||
|
|
||
| package kafka | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strconv" | ||
| "strings" | ||
|
|
||
| client "github.com/influxdata/influxdb1-client/v2" | ||
| "github.com/loadimpact/k6/lib/types" | ||
| "github.com/loadimpact/k6/stats" | ||
| "github.com/mitchellh/mapstructure" | ||
| "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| type extractTagsToValuesFunc func(map[string]string, map[string]interface{}) map[string]interface{} | ||
|
|
||
| // format returns a string array of metrics in influx line-protocol | ||
| func formatAsInfluxdbV1( | ||
| logger logrus.FieldLogger, samples []stats.Sample, extractTagsToValues extractTagsToValuesFunc, | ||
| ) ([]string, error) { | ||
| var metrics []string | ||
| type cacheItem struct { | ||
| tags map[string]string | ||
| values map[string]interface{} | ||
| } | ||
| cache := map[*stats.SampleTags]cacheItem{} | ||
| for _, sample := range samples { | ||
| var tags map[string]string | ||
| values := make(map[string]interface{}) | ||
| if cached, ok := cache[sample.Tags]; ok { | ||
| tags = cached.tags | ||
| for k, v := range cached.values { | ||
| values[k] = v | ||
| } | ||
| } else { | ||
| tags = sample.Tags.CloneTags() | ||
| extractTagsToValues(tags, values) | ||
| cache[sample.Tags] = cacheItem{tags, values} | ||
| } | ||
| values["value"] = sample.Value | ||
| p, err := client.NewPoint( | ||
| sample.Metric.Name, | ||
| tags, | ||
| values, | ||
| sample.Time, | ||
| ) | ||
| if err != nil { | ||
| logger.WithError(err).Error("InfluxDB: Couldn't make point from sample!") | ||
| return nil, err | ||
| } | ||
| metrics = append(metrics, p.String()) | ||
| } | ||
|
|
||
| return metrics, nil | ||
| } | ||
|
|
||
| // FieldKind defines Enum for tag-to-field type conversion | ||
| type FieldKind int | ||
|
|
||
| const ( | ||
| // String field (default) | ||
| String FieldKind = iota | ||
| // Int field | ||
| Int | ||
| // Float field | ||
| Float | ||
| // Bool field | ||
| Bool | ||
| ) | ||
|
|
||
| func newExtractTagsFields(fieldKinds map[string]FieldKind) extractTagsToValuesFunc { | ||
| return func(tags map[string]string, values map[string]interface{}) map[string]interface{} { | ||
| for tag, kind := range fieldKinds { | ||
| if val, ok := tags[tag]; ok { | ||
| var v interface{} | ||
| var err error | ||
|
|
||
| switch kind { | ||
| case String: | ||
| v = val | ||
| case Bool: | ||
| v, err = strconv.ParseBool(val) | ||
| case Float: | ||
| v, err = strconv.ParseFloat(val, 64) | ||
| case Int: | ||
| v, err = strconv.ParseInt(val, 10, 64) | ||
| } | ||
| if err == nil { | ||
| values[tag] = v | ||
| } else { | ||
| values[tag] = val | ||
| } | ||
|
|
||
| delete(tags, tag) | ||
| } | ||
| } | ||
| return values | ||
| } | ||
| } | ||
|
|
||
| // makeFieldKinds reads the Config and returns a lookup map of tag names to | ||
| // the field type their values should be converted to. | ||
| func makeInfluxdbFieldKinds(tagsAsFields []string) (map[string]FieldKind, error) { | ||
| fieldKinds := make(map[string]FieldKind) | ||
| for _, tag := range tagsAsFields { | ||
| var fieldName, fieldType string | ||
| s := strings.SplitN(tag, ":", 2) | ||
| if len(s) == 1 { | ||
| fieldName, fieldType = s[0], "string" | ||
| } else { | ||
| fieldName, fieldType = s[0], s[1] | ||
| } | ||
|
|
||
| err := checkDuplicatedTypeDefinitions(fieldKinds, fieldName) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| switch fieldType { | ||
| case "string": | ||
| fieldKinds[fieldName] = String | ||
| case "bool": | ||
| fieldKinds[fieldName] = Bool | ||
| case "float": | ||
| fieldKinds[fieldName] = Float | ||
| case "int": | ||
| fieldKinds[fieldName] = Int | ||
| default: | ||
| return nil, fmt.Errorf("An invalid type (%s) is specified for an InfluxDB field (%s).", | ||
| fieldType, fieldName) | ||
| } | ||
| } | ||
|
|
||
| return fieldKinds, nil | ||
| } | ||
|
|
||
| func checkDuplicatedTypeDefinitions(fieldKinds map[string]FieldKind, tag string) error { | ||
| if _, found := fieldKinds[tag]; found { | ||
| return fmt.Errorf("A tag name (%s) shows up more than once in InfluxDB field type configurations.", tag) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (c influxdbConfig) Apply(cfg influxdbConfig) influxdbConfig { | ||
| if len(cfg.TagsAsFields) > 0 { | ||
| c.TagsAsFields = cfg.TagsAsFields | ||
| } | ||
| return c | ||
| } | ||
|
|
||
| // ParseMap parses a map[string]interface{} into a Config | ||
| func influxdbParseMap(m map[string]interface{}) (influxdbConfig, error) { | ||
| c := influxdbConfig{} | ||
| if v, ok := m["tagsAsFields"].(string); ok { | ||
| m["tagsAsFields"] = []string{v} | ||
| } | ||
| dec, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{ | ||
| DecodeHook: types.NullDecoder, | ||
| Result: &c, | ||
| }) | ||
| if err != nil { | ||
| return c, err | ||
| } | ||
|
|
||
| err = dec.Decode(m) | ||
| return c, err | ||
| } | ||
|
|
||
| type influxdbConfig struct { | ||
| TagsAsFields []string `json:"tagsAsFields,omitempty" envconfig:"K6_INFLUXDB_TAGS_AS_FIELDS"` | ||
| } | ||
|
|
||
| func newInfluxdbConfig() influxdbConfig { | ||
| c := influxdbConfig{ | ||
| TagsAsFields: []string{"vu", "iter", "url"}, | ||
| } | ||
| return c | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| /* | ||
| * | ||
| * k6 - a next-generation load testing tool | ||
| * Copyright (C) 2021 Load Impact | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Affero General Public License as | ||
| * published by the Free Software Foundation, either version 3 of the | ||
| * License, or (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| * | ||
| */ | ||
|
|
||
| package kafka | ||
|
|
||
| import ( | ||
| "time" | ||
|
|
||
| "github.com/loadimpact/k6/stats" | ||
| ) | ||
|
|
||
| // wrapSample is used to package a metric sample in a way that's nice to export | ||
| // to JSON. | ||
| func wrapSample(sample stats.Sample) envolope { | ||
| return envolope{ | ||
| Type: "Point", | ||
| Metric: sample.Metric.Name, | ||
| Data: newJSONSample(sample), | ||
| } | ||
| } | ||
|
|
||
| // envolope is the data format we use to export both metrics and metric samples | ||
| // to the JSON file. | ||
| type envolope struct { | ||
| Type string `json:"type"` | ||
| Data interface{} `json:"data"` | ||
| Metric string `json:"metric,omitempty"` | ||
| } | ||
|
|
||
| // jsonSample is the data format for metric sample data in the JSON file. | ||
| type jsonSample struct { | ||
| Time time.Time `json:"time"` | ||
| Value float64 `json:"value"` | ||
| Tags *stats.SampleTags `json:"tags"` | ||
| } | ||
|
|
||
| func newJSONSample(sample stats.Sample) jsonSample { | ||
| return jsonSample{ | ||
| Time: sample.Time, | ||
| Value: sample.Value, | ||
| Tags: sample.Tags, | ||
| } | ||
| } |