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Add otlploggrpc exporter skeleton (open-telemetry#5246)
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XSAM committed Apr 25, 2024
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9 changes: 9 additions & 0 deletions .github/dependabot.yml
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Expand Up @@ -127,6 +127,15 @@ updates:
schedule:
interval: weekly
day: sunday
- package-ecosystem: gomod
directory: /exporters/otlp/otlplog/otlploggrpc
labels:
- dependencies
- go
- Skip Changelog
schedule:
interval: weekly
day: sunday
- package-ecosystem: gomod
directory: /exporters/otlp/otlplog/otlploghttp
labels:
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3 changes: 3 additions & 0 deletions exporters/otlp/otlplog/otlploggrpc/README.md
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# OTLP Log gRPC Exporter

[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc)](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc)
14 changes: 14 additions & 0 deletions exporters/otlp/otlplog/otlploggrpc/client.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

package otlploggrpc // import "go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc"

type client struct {
// TODO: implement.
}

// newClient creates a new gRPC log client.
func newClient(cfg config) (*client, error) {
// TODO: implement.
return &client{}, nil
}
227 changes: 227 additions & 0 deletions exporters/otlp/otlplog/otlploggrpc/config.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

package otlploggrpc // import "go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc"

import (
"time"

"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
)

// Option applies an option to the Exporter.
type Option interface {
applyHTTPOption(config) config
}

type config struct {
// TODO: implement.
}

func newConfig(options []Option) config {
var c config
for _, opt := range options {
c = opt.applyHTTPOption(c)
}
return c
}

// RetryConfig defines configuration for retrying the export of log data
// that failed.
//
// This configuration does not define any network retry strategy. That is
// entirely handled by the gRPC ClientConn.
type RetryConfig struct {
// TODO: implement.
}

// WithInsecure disables client transport security for the Exporter's gRPC
// connection, just like grpc.WithInsecure()
// (https://pkg.go.dev/google.golang.org/grpc#WithInsecure) does.
//
// If the OTEL_EXPORTER_OTLP_ENDPOINT or OTEL_EXPORTER_OTLP_LOGS_ENDPOINT
// environment variable is set, and this option is not passed, that variable
// value will be used to determine client security. If the endpoint has a
// scheme of "http" or "unix" client security will be disabled. If both are
// set, OTEL_EXPORTER_OTLP_LOGS_ENDPOINT will take precedence.
//
// By default, if an environment variable is not set, and this option is not
// passed, client security will be used.
//
// This option has no effect if WithGRPCConn is used.
func WithInsecure() Option {
// TODO: implement.
return nil
}

// WithEndpoint sets the target endpoint the Exporter will connect to.
//
// If the OTEL_EXPORTER_OTLP_ENDPOINT or OTEL_EXPORTER_OTLP_LOGS_ENDPOINT
// environment variable is set, and this option is not passed, that variable
// value will be used. If both are set, OTEL_EXPORTER_OTLP_LOGS_ENDPOINT
// will take precedence.
//
// If both this option and WithEndpointURL are used, the last used option will
// take precedence.
//
// By default, if an environment variable is not set, and this option is not
// passed, "localhost:4317" will be used.
//
// This option has no effect if WithGRPCConn is used.
func WithEndpoint(endpoint string) Option {
// TODO: implement.
return nil
}

// WithEndpointURL sets the target endpoint URL the Exporter will connect to.
//
// If the OTEL_EXPORTER_OTLP_ENDPOINT or OTEL_EXPORTER_OTLP_LOGS_ENDPOINT
// environment variable is set, and this option is not passed, that variable
// value will be used. If both are set, OTEL_EXPORTER_OTLP_LOGS_ENDPOINT
// will take precedence.
//
// If both this option and WithEndpoint are used, the last used option will
// take precedence.
//
// If an invalid URL is provided, the default value will be kept.
//
// By default, if an environment variable is not set, and this option is not
// passed, "localhost:4317" will be used.
//
// This option has no effect if WithGRPCConn is used.
func WithEndpointURL(u string) Option {
// TODO: implement.
return nil
}

// 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 {
// TODO: implement.
return nil
}

// WithCompressor sets the compressor the gRPC client uses.
// Supported compressor values: "gzip".
//
// If the OTEL_EXPORTER_OTLP_COMPRESSION or
// OTEL_EXPORTER_OTLP_LOGS_COMPRESSION environment variable is set, and
// this option is not passed, that variable value will be used. That value can
// be either "none" or "gzip". If both are set,
// OTEL_EXPORTER_OTLP_LOGS_COMPRESSION will take precedence.
//
// By default, if an environment variable is not set, and this option is not
// passed, no compressor will be used.
//
// This option has no effect if WithGRPCConn is used.
func WithCompressor(compressor string) Option {
// TODO: implement.
return nil
}

// WithHeaders will send the provided headers with each gRPC requests.
//
// If the OTEL_EXPORTER_OTLP_HEADERS or OTEL_EXPORTER_OTLP_LOGS_HEADERS
// environment variable is set, and this option is not passed, that variable
// value will be used. The value will be parsed as a list of key value pairs.
// These pairs are expected to be in the W3C Correlation-Context format
// without additional semi-colon delimited metadata (i.e. "k1=v1,k2=v2"). If
// both are set, OTEL_EXPORTER_OTLP_LOGS_HEADERS will take precedence.
//
// By default, if an environment variable is not set, and this option is not
// passed, no user headers will be set.
func WithHeaders(headers map[string]string) Option {
// TODO: implement.
return nil
}

// WithTLSCredentials sets the gRPC connection to use creds.
//
// If the OTEL_EXPORTER_OTLP_CERTIFICATE or
// OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE environment variable is set, and
// this option is not passed, that variable value will be used. The value will
// be parsed the filepath of the TLS certificate chain to use. If both are
// set, OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE will take precedence.
//
// By default, if an environment variable is not set, and this option is not
// passed, no TLS credentials will be used.
//
// This option has no effect if WithGRPCConn is used.
func WithTLSCredentials(_ credentials.TransportCredentials) Option {
// TODO: implement.
return nil
}

// WithServiceConfig defines the default gRPC service config used.
//
// This option has no effect if WithGRPCConn is used.
func WithServiceConfig(serviceConfig string) Option {
// TODO: implement.
return nil
}

// WithDialOption sets explicit grpc.DialOptions to use when establishing a
// gRPC 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.
// The [grpc.WithBlock], [grpc.WithTimeout], and [grpc.WithReturnConnectionError]
// grpc.DialOptions are ignored.
//
// This option has no effect if WithGRPCConn is used.
func WithDialOption(_ ...grpc.DialOption) Option {
// TODO: implement.
return nil
}

// 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 Exporter
// Shutdown method will not close this connection.
func WithGRPCConn(_ *grpc.ClientConn) Option {
// TODO: implement.
return nil
}

// WithTimeout sets the max amount of time an Exporter will attempt an export.
//
// This takes precedence over any retry settings defined by WithRetry. Once
// this time limit has been reached the export is abandoned and the log
// data is dropped.
//
// If the OTEL_EXPORTER_OTLP_TIMEOUT or OTEL_EXPORTER_OTLP_LOGS_TIMEOUT
// environment variable is set, and this option is not passed, that variable
// value will be used. The value will be parsed as an integer representing the
// timeout in milliseconds. If both are set,
// OTEL_EXPORTER_OTLP_LOGS_TIMEOUT will take precedence.
//
// By default, if an environment variable is not set, and this option is not
// passed, a timeout of 10 seconds will be used.
func WithTimeout(duration time.Duration) Option {
// TODO: implement.
return nil
}

// WithRetry sets the retry policy for transient retryable errors that are
// returned by the target endpoint.
//
// 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 {
// TODO: implement.
return nil
}
6 changes: 6 additions & 0 deletions exporters/otlp/otlplog/otlploggrpc/doc.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

// Package otlploggrpc provides an OTLP log exporter. The exporter uses gRPC to
// transport OTLP protobuf payloads.
package otlploggrpc // import "go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc"
53 changes: 53 additions & 0 deletions exporters/otlp/otlplog/otlploggrpc/exporter.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

package otlploggrpc // import "go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc"

import (
"context"

"go.opentelemetry.io/otel/sdk/log"
)

// Exporter is a OpenTelemetry log Exporter. It transports log data encoded as
// OTLP protobufs using gRPC.
type Exporter struct {
// TODO: implement.
}

// Compile-time check Exporter implements [log.Exporter].
var _ log.Exporter = (*Exporter)(nil)

// New returns a new [Exporter].
func New(_ context.Context, options ...Option) (*Exporter, error) {
cfg := newConfig(options)
c, err := newClient(cfg)
if err != nil {
return nil, err
}
return newExporter(c, cfg)
}

func newExporter(*client, config) (*Exporter, error) {
// TODO: implement
return &Exporter{}, nil
}

// Export transforms and transmits log records to an OTLP receiver.
func (e *Exporter) Export(ctx context.Context, records []log.Record) error {
// TODO: implement.
return nil
}

// Shutdown shuts down the Exporter. Calls to Export or ForceFlush will perform
// no operation after this is called.
func (e *Exporter) Shutdown(ctx context.Context) error {
// TODO: implement.
return nil
}

// ForceFlush does nothing. The Exporter holds no state.
func (e *Exporter) ForceFlush(ctx context.Context) error {
// TODO: implement.
return nil
}
39 changes: 39 additions & 0 deletions exporters/otlp/otlplog/otlploggrpc/go.mod
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module go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc

go 1.21

require (
github.com/stretchr/testify v1.9.0
go.opentelemetry.io/otel/sdk/log v0.2.0-alpha
google.golang.org/grpc v1.63.2
)

require (
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/go-logr/logr v1.4.1 // indirect
github.com/go-logr/stdr v1.2.2 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
go.opentelemetry.io/otel v1.26.0 // indirect
go.opentelemetry.io/otel/log v0.2.0-alpha // indirect
go.opentelemetry.io/otel/metric v1.26.0 // indirect
go.opentelemetry.io/otel/sdk v1.26.0 // indirect
go.opentelemetry.io/otel/trace v1.26.0 // indirect
golang.org/x/net v0.23.0 // indirect
golang.org/x/sys v0.19.0 // indirect
golang.org/x/text v0.14.0 // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20240227224415-6ceb2ff114de // indirect
google.golang.org/protobuf v1.33.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)

replace go.opentelemetry.io/otel => ../../../..

replace go.opentelemetry.io/otel/sdk/log => ../../../../sdk/log

replace go.opentelemetry.io/otel/sdk => ../../../../sdk

replace go.opentelemetry.io/otel/log => ../../../../log

replace go.opentelemetry.io/otel/trace => ../../../../trace

replace go.opentelemetry.io/otel/metric => ../../../../metric
29 changes: 29 additions & 0 deletions exporters/otlp/otlplog/otlploggrpc/go.sum
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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ=
github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
golang.org/x/net v0.23.0 h1:7EYJ93RZ9vYSZAIb2x3lnuvqO5zneoD6IvWjuhfxjTs=
golang.org/x/net v0.23.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
google.golang.org/genproto/googleapis/rpc v0.0.0-20240227224415-6ceb2ff114de h1:cZGRis4/ot9uVm639a+rHCUaG0JJHEsdyzSQTMX+suY=
google.golang.org/genproto/googleapis/rpc v0.0.0-20240227224415-6ceb2ff114de/go.mod h1:H4O17MA/PE9BsGx3w+a+W2VOLLD1Qf7oJneAoU6WktY=
google.golang.org/grpc v1.63.2 h1:MUeiw1B2maTVZthpU5xvASfTh3LDbxHd6IJ6QQVU+xM=
google.golang.org/grpc v1.63.2/go.mod h1:WAX/8DgncnokcFUldAxq7GeB5DXHDbMF+lLvDomNkRA=
google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

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