/
collector.go
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/
collector.go
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/*
*
* k6 - a next-generation load testing tool
* Copyright (C) 2019 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 statsd
import (
"encoding/json"
"time"
"github.com/kelseyhightower/envconfig"
"github.com/sirupsen/logrus"
"gopkg.in/guregu/null.v3"
"github.com/loadimpact/k6/lib/types"
"github.com/loadimpact/k6/stats/statsd/common"
)
// Config defines the StatsD configuration.
type Config struct {
Addr null.String `json:"addr,omitempty" envconfig:"K6_STATSD_ADDR"`
BufferSize null.Int `json:"bufferSize,omitempty" envconfig:"K6_STATSD_BUFFER_SIZE"`
Namespace null.String `json:"namespace,omitempty" envconfig:"K6_STATSD_NAMESPACE"`
PushInterval types.NullDuration `json:"pushInterval,omitempty" envconfig:"K6_STATSD_PUSH_INTERVAL"`
}
// GetAddr returns the address of the StatsD service.
func (c Config) GetAddr() null.String {
return c.Addr
}
// GetBufferSize returns the size of the commands buffer.
func (c Config) GetBufferSize() null.Int {
return c.BufferSize
}
// GetNamespace returns the namespace prepended to all statsd calls.
func (c Config) GetNamespace() null.String {
return c.Namespace
}
// GetPushInterval returns the time interval between outgoing data batches.
func (c Config) GetPushInterval() types.NullDuration {
return c.PushInterval
}
var _ common.Config = &Config{}
// Apply saves config non-zero config values from the passed config in the receiver.
func (c Config) Apply(cfg Config) Config {
if cfg.Addr.Valid {
c.Addr = cfg.Addr
}
if cfg.BufferSize.Valid {
c.BufferSize = cfg.BufferSize
}
if cfg.Namespace.Valid {
c.Namespace = cfg.Namespace
}
if cfg.PushInterval.Valid {
c.PushInterval = cfg.PushInterval
}
return c
}
// NewConfig creates a new Config instance with default values for some fields.
func NewConfig() Config {
return Config{
Addr: null.NewString("localhost:8125", false),
BufferSize: null.NewInt(20, false),
Namespace: null.NewString("k6.", false),
PushInterval: types.NewNullDuration(1*time.Second, false),
}
}
// New creates a new statsd connector client
func New(logger logrus.FieldLogger, conf common.Config) (*common.Collector, error) {
return &common.Collector{
Config: conf,
Type: "statsd",
Logger: logger,
}, nil
}
// GetConsolidatedConfig combines {default config values + JSON config +
// environment vars}, and returns the final result.
func GetConsolidatedConfig(jsonRawConf json.RawMessage, env map[string]string) (Config, error) {
result := NewConfig()
if jsonRawConf != nil {
jsonConf := Config{}
if err := json.Unmarshal(jsonRawConf, &jsonConf); err != nil {
return result, err
}
result = result.Apply(jsonConf)
}
envConfig := Config{}
if err := envconfig.Process("", &envConfig); err != nil {
// TODO: get rid of envconfig and actually use the env parameter...
return result, err
}
result = result.Apply(envConfig)
return result, nil
}