forked from agoda-com/opentelemetry-logs-go
/
options.go
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/
options.go
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/*
Copyright Agoda Services Co.,Ltd.
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 otlplogsgrpc
import (
"fmt"
"time"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"github.com/kudarap/opentelemetry-logs-go/exporters/otlp/otlplogs/internal/otlpconfig"
"github.com/kudarap/opentelemetry-logs-go/exporters/otlp/otlplogs/internal/retry"
"go.opentelemetry.io/otel"
)
// Option applies an option to the gRPC driver.
type Option interface {
applyGRPCOption(otlpconfig.Config) otlpconfig.Config
}
func asGRPCOptions(opts []Option) []otlpconfig.GRPCOption {
converted := make([]otlpconfig.GRPCOption, len(opts))
for i, o := range opts {
converted[i] = otlpconfig.NewGRPCOption(o.applyGRPCOption)
}
return converted
}
// RetryConfig defines configuration for retrying export of logs batches that
// failed to be received by the target endpoint.
//
// This configuration does not define any network retry strategy. That is
// entirely handled by the gRPC ClientConn.
type RetryConfig retry.Config
type wrappedOption struct {
otlpconfig.GRPCOption
}
func (w wrappedOption) applyGRPCOption(cfg otlpconfig.Config) otlpconfig.Config {
return w.ApplyGRPCOption(cfg)
}
// WithInsecure disables grpcClient transport security for the exporter's gRPC
// connection just like grpc.WithInsecure()
// (https://pkg.go.dev/google.golang.org/grpc#WithInsecure) does. Note, by
// default, grpcClient security is required unless WithInsecure is used.
//
// This option has no effect if WithGRPCConn is used.
func WithInsecure() Option {
return wrappedOption{otlpconfig.WithInsecure()}
}
// WithEndpoint sets the target endpoint the exporter will connect to. If
// unset, localhost:4317 will be used as a default.
//
// This option has no effect if WithGRPCConn is used.
func WithEndpoint(endpoint string) Option {
return wrappedOption{otlpconfig.WithEndpoint(endpoint)}
}
// WithReconnectionPeriod set the minimum amount of time between connection
// attempts to the target endpoint.
//
// This option has no effect if WithGRPCConn is used.
func WithReconnectionPeriod(rp time.Duration) Option {
return wrappedOption{otlpconfig.NewGRPCOption(func(cfg otlpconfig.Config) otlpconfig.Config {
cfg.ReconnectionPeriod = rp
return cfg
})}
}
func compressorToCompression(compressor string) otlpconfig.Compression {
if compressor == "gzip" {
return otlpconfig.GzipCompression
}
otel.Handle(fmt.Errorf("invalid compression type: '%s', using no compression as default", compressor))
return otlpconfig.NoCompression
}
// WithCompressor sets the compressor for the gRPC grpcClient to use when sending
// requests. It is the responsibility of the caller to ensure that the
// compressor set has been registered with google.golang.org/grpc/encoding.
// This can be done by encoding.RegisterCompressor. Some compressors
// auto-register on import, such as gzip, which can be registered by calling
// `import _ "google.golang.org/grpc/encoding/gzip"`.
//
// This option has no effect if WithGRPCConn is used.
func WithCompressor(compressor string) Option {
return wrappedOption{otlpconfig.WithCompression(compressorToCompression(compressor))}
}
// WithHeaders will send the provided headers with each gRPC requests.
func WithHeaders(headers map[string]string) Option {
return wrappedOption{otlpconfig.WithHeaders(headers)}
}
// WithTLSCredentials allows the connection to use TLS credentials when
// talking to the server. It takes in grpc.TransportCredentials instead of say
// a Certificate file or a tls.Certificate, because the retrieving of these
// credentials can be done in many ways e.g. plain file, in code tls.Config or
// by certificate rotation, so it is up to the caller to decide what to use.
//
// This option has no effect if WithGRPCConn is used.
func WithTLSCredentials(creds credentials.TransportCredentials) Option {
return wrappedOption{otlpconfig.NewGRPCOption(func(cfg otlpconfig.Config) otlpconfig.Config {
cfg.Logs.GRPCCredentials = creds
return cfg
})}
}
// WithServiceConfig defines the default gRPC service config used.
//
// This option has no effect if WithGRPCConn is used.
func WithServiceConfig(serviceConfig string) Option {
return wrappedOption{otlpconfig.NewGRPCOption(func(cfg otlpconfig.Config) otlpconfig.Config {
cfg.ServiceConfig = serviceConfig
return cfg
})}
}
// WithDialOption sets explicit grpc.DialOptions to use when making a
// connection. The options here are appended to the internal grpc.DialOptions
// used so they will take precedence over any other internal grpc.DialOptions
// they might conflict with.
//
// This option has no effect if WithGRPCConn is used.
func WithDialOption(opts ...grpc.DialOption) Option {
return wrappedOption{otlpconfig.NewGRPCOption(func(cfg otlpconfig.Config) otlpconfig.Config {
cfg.DialOptions = opts
return cfg
})}
}
// WithGRPCConn sets conn as the gRPC ClientConn used for all communication.
//
// This option takes precedence over any other option that relates to
// establishing or persisting a gRPC connection to a target endpoint. Any
// other option of those types passed will be ignored.
//
// It is the callers responsibility to close the passed conn. The grpcClient
// Shutdown method will not close this connection.
func WithGRPCConn(conn *grpc.ClientConn) Option {
return wrappedOption{otlpconfig.NewGRPCOption(func(cfg otlpconfig.Config) otlpconfig.Config {
cfg.GRPCConn = conn
return cfg
})}
}
// WithTimeout sets the max amount of time a grpcClient will attempt to export a
// batch of logs. This takes precedence over any retry settings defined with
// WithRetry, once this time limit has been reached the export is abandoned
// and the batch of logs is dropped.
//
// If unset, the default timeout will be set to 10 seconds.
func WithTimeout(duration time.Duration) Option {
return wrappedOption{otlpconfig.WithTimeout(duration)}
}
// WithRetry sets the retry policy for transient retryable errors that may be
// returned by the target endpoint when exporting a batch of logs.
//
// If the target endpoint responds with not only a retryable error, but
// explicitly returns a backoff time in the response. That time will take
// precedence over these settings.
//
// These settings do not define any network retry strategy. That is entirely
// handled by the gRPC ClientConn.
//
// If unset, the default retry policy will be used. It will retry the export
// 5 seconds after receiving a retryable error and increase exponentially
// after each error for no more than a total time of 1 minute.
func WithRetry(settings RetryConfig) Option {
return wrappedOption{otlpconfig.WithRetry(retry.Config(settings))}
}