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factory.go
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factory.go
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// Copyright (c) 2019 The Jaeger 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 grpc
import (
"flag"
"github.com/spf13/viper"
"github.com/uber/jaeger-lib/metrics"
"go.uber.org/zap"
"github.com/jaegertracing/jaeger/plugin/storage/grpc/config"
"github.com/jaegertracing/jaeger/plugin/storage/grpc/shared"
"github.com/jaegertracing/jaeger/storage/dependencystore"
"github.com/jaegertracing/jaeger/storage/spanstore"
)
// Factory implements storage.Factory and creates storage components backed by a storage plugin.
type Factory struct {
options Options
metricsFactory metrics.Factory
logger *zap.Logger
builder config.PluginBuilder
store shared.StoragePlugin
}
// NewFactory creates a new Factory.
func NewFactory() *Factory {
return &Factory{}
}
// AddFlags implements plugin.Configurable
func (f *Factory) AddFlags(flagSet *flag.FlagSet) {
f.options.AddFlags(flagSet)
}
// InitFromViper implements plugin.Configurable
func (f *Factory) InitFromViper(v *viper.Viper) {
f.options.InitFromViper(v)
f.builder = &f.options.Configuration
}
// Initialize implements storage.Factory
func (f *Factory) Initialize(metricsFactory metrics.Factory, logger *zap.Logger) error {
f.metricsFactory, f.logger = metricsFactory, logger
store, err := f.builder.Build()
if err != nil {
return err
}
f.store = store
logger.Info("External plugin storage configuration", zap.Any("configuration", f.options.Configuration))
return nil
}
// CreateSpanReader implements storage.Factory
func (f *Factory) CreateSpanReader() (spanstore.Reader, error) {
return f.store.SpanReader(), nil
}
// CreateSpanWriter implements storage.Factory
func (f *Factory) CreateSpanWriter() (spanstore.Writer, error) {
return f.store.SpanWriter(), nil
}
// CreateDependencyReader implements storage.Factory
func (f *Factory) CreateDependencyReader() (dependencystore.Reader, error) {
return f.store.DependencyReader(), nil
}