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Add otlploghttp exporter skeleton (#5138)
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MrAlias authored Apr 4, 2024
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9 changes: 9 additions & 0 deletions .github/dependabot.yml
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schedule:
interval: weekly
day: sunday
- package-ecosystem: gomod
directory: /exporters/otlp/otlplog/otlploghttp
labels:
- dependencies
- go
- Skip Changelog
schedule:
interval: weekly
day: sunday
- package-ecosystem: gomod
directory: /exporters/otlp/otlpmetric/otlpmetricgrpc
labels:
Expand Down
3 changes: 3 additions & 0 deletions exporters/otlp/otlplog/README.md
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# OTLP Log Exporters

[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/exporters/otlp/otlplog)](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlplog)
3 changes: 3 additions & 0 deletions exporters/otlp/otlplog/otlploghttp/README.md
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# OTLP Log HTTP Exporter

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

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

type client struct {
// TODO: implement.
}

// newClient creates a new HTTP log client.
func newClient(cfg config) (*client, error) {
// TODO: implement.
return &client{}, nil
}
198 changes: 198 additions & 0 deletions exporters/otlp/otlplog/otlploghttp/config.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

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

import (
"crypto/tls"
"net/http"
"net/url"
"time"
)

// 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
}

// WithEndpoint sets the target endpoint the Exporter will connect to. This
// endpoint is specified as a host and optional port, no path or scheme should
// be included (see WithInsecure and WithURLPath).
//
// 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.
//
// By default, if an environment variable is not set, and this option is not
// passed, "localhost:4318" will be 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:4318" will be used.
func WithEndpointURL(u string) Option {
// TODO: implement.
return nil
}

// Compression describes the compression used for payloads sent to the
// collector.
type Compression int

// WithCompression sets the compression strategy the Exporter will use to
// compress the HTTP body.
//
// 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 compression strategy will be used.
func WithCompression(compression Compression) Option {
// TODO: implement.
return nil
}

// WithURLPath sets the URL path the Exporter will send requests to.
//
// If the OTEL_EXPORTER_OTLP_ENDPOINT or OTEL_EXPORTER_OTLP_LOGS_ENDPOINT
// environment variable is set, and this option is not passed, the path
// contained in that variable value will be used. 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, "/v1/logs" will be used.
func WithURLPath(urlPath string) Option {
// TODO: implement.
return nil
}

// WithTLSClientConfig sets the TLS configuration the Exporter will use for
// HTTP requests.
//
// 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, the system default configuration is used.
func WithTLSClientConfig(tlsCfg *tls.Config) Option {
// TODO: implement.
return nil
}

// WithInsecure disables client transport security for the Exporter's HTTP
// connection.
//
// 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.
func WithInsecure() Option {
// TODO: implement.
return nil
}

// WithHeaders will send the provided headers with each HTTP 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
}

// 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
}

// RetryConfig defines configuration for retrying the export of log data that
// failed.
type RetryConfig struct {
// TODO: implement.
}

// 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.
//
// 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(rc RetryConfig) Option {
// TODO: implement.
return nil
}

// HTTPTransportProxyFunc is a function that resolves which URL to use as proxy
// for a given request. This type is compatible with http.Transport.Proxy and
// can be used to set a custom proxy function to the OTLP HTTP client.
type HTTPTransportProxyFunc func(*http.Request) (*url.URL, error)

// WithProxy sets the Proxy function the client will use to determine the
// proxy to use for an HTTP request. If this option is not used, the client
// will use [http.ProxyFromEnvironment].
func WithProxy(pf HTTPTransportProxyFunc) Option {
// TODO: implement.
return nil
}
6 changes: 6 additions & 0 deletions exporters/otlp/otlplog/otlploghttp/doc.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

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

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

import (
"context"

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

// Exporter is a OpenTelemetry log Exporter. It transports log data encoded as
// OTLP protobufs using HTTP.
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
}
34 changes: 34 additions & 0 deletions exporters/otlp/otlplog/otlploghttp/go.mod
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module go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp

go 1.21

require (
github.com/stretchr/testify v1.9.0
go.opentelemetry.io/otel/sdk/log v0.0.0-20240403115316-6c6e1e7416e9
)

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 v1.24.0 // indirect
go.opentelemetry.io/otel/log v0.0.1-alpha // indirect
go.opentelemetry.io/otel/metric v1.24.0 // indirect
go.opentelemetry.io/otel/sdk v1.24.0 // indirect
go.opentelemetry.io/otel/trace v1.24.0 // indirect
golang.org/x/sys v0.18.0 // 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/trace => ../../../../trace

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

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

replace go.opentelemetry.io/otel/log => ../../../../log
19 changes: 19 additions & 0 deletions exporters/otlp/otlplog/otlploghttp/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/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
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=
9 changes: 9 additions & 0 deletions exporters/otlp/otlplog/otlploghttp/version.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

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

// Version is the current release version of the OpenTelemetry OTLP over HTTP/protobuf logs exporter in use.
func Version() string {
return "0.0.0"
}
21 changes: 21 additions & 0 deletions exporters/otlp/otlplog/otlploghttp/version_test.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

package otlploghttp

import (
"regexp"
"testing"

"github.com/stretchr/testify/assert"
)

// regex taken from https://github.com/Masterminds/semver/tree/v3.1.1
var versionRegex = regexp.MustCompile(`^v?([0-9]+)(\.[0-9]+)?(\.[0-9]+)?` +
`(-([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
`(\+([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?$`)

func TestVersionSemver(t *testing.T) {
v := Version()
assert.NotNil(t, versionRegex.FindStringSubmatch(v), "version is not semver: %s", v)
}
1 change: 1 addition & 0 deletions versions.yaml
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Expand Up @@ -44,3 +44,4 @@ module-sets:
excluded-modules:
- go.opentelemetry.io/otel/internal/tools
- go.opentelemetry.io/otel/sdk/log
- go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp

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