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factory.go
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factory.go
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// Copyright The OpenTelemetry 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 zookeeperconfigsource
import (
"context"
"errors"
"fmt"
"net/url"
"time"
"go.opentelemetry.io/collector/config"
"go.opentelemetry.io/collector/config/experimental/configsource"
"github.com/signalfx/splunk-otel-collector/internal/configprovider"
)
const (
// The "type" of zookeeper config sources in configuration.
typeStr = "zookeeper"
defaultEndpoint = "localhost:2181"
defaultTimeout = time.Second * 10
)
// Private error types to help with testability.
type (
errMissingEndpoint struct{ error }
errInvalidEndpoint struct{ error }
)
type zkFactory struct{}
func (v *zkFactory) Type() config.Type {
return typeStr
}
func (v *zkFactory) CreateDefaultConfig() configprovider.ConfigSettings {
return &Config{
Settings: configprovider.NewSettings(typeStr),
Endpoints: []string{defaultEndpoint},
Timeout: defaultTimeout,
}
}
func (v *zkFactory) CreateConfigSource(_ context.Context, params configprovider.CreateParams, cfg configprovider.ConfigSettings) (configsource.ConfigSource, error) {
zkCfg := cfg.(*Config)
if len(zkCfg.Endpoints) == 0 {
return nil, &errMissingEndpoint{errors.New("cannot connect to zk without any endpoints")}
}
for _, uri := range zkCfg.Endpoints {
if _, err := url.ParseRequestURI(uri); err != nil {
return nil, &errInvalidEndpoint{fmt.Errorf("invalid endpoint %q: %w", uri, err)}
}
}
return &zookeeperconfigsource{
logger: params.Logger,
endpoints: zkCfg.Endpoints,
timeout: zkCfg.Timeout,
}, nil
}
// NewFactory returns a new zookeekeper config source factory
func NewFactory() configprovider.Factory {
return &zkFactory{}
}