open-telemetry
/
opentelemetry-go
mirror of https://github.com/open-telemetry/opentelemetry-go.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

otlp: Refine documentation (#4695)

This commit is contained in:
Robert Pająk 2023-11-08 17:18:12 +01:00 committed by GitHub
parent 0f5179f4f1
commit 0c5ebd5856
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
14 changed files with 380 additions and 227 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
CHANGELOG.md
View File

@ -61,6 +61,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
- Fix improper parsing of characters such us `+`, `\` by `Parse` in `go.opentelemetry.io/otel/baggage` as they were rendered as a whitespace. (#4667)
- In `go.opentelemetry.op/otel/exporters/prometheus`, the exporter no longer `Collect`s metrics after `Shutdown` is invoked. (#4648)
- Fix documentation for `WithCompressor` in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc`. (#4695)
- Fix documentation for `WithCompressor` in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc`. (#4695)
## [1.19.0/0.42.0/0.0.7] 2023-09-28

18
exporters/README.md
View File

@ -7,14 +7,16 @@ This package contains exporters for this purpose.
The following exporter packages are provided with the following OpenTelemetry signal support.
| Exporter Package | Metrics | Traces |
| :-----------------------------------------------------------------------------: | :-----: | :----: |
| [go.opentelemetry.io/otel/exporters/otlp/otlpmetric](./otlp/otlpmetric) | ✓ | |
| [go.opentelemetry.io/otel/exporters/otlp/otlptrace](./otlp/otlptrace) | | ✓ |
| [go.opentelemetry.io/otel/exporters/prometheus](./prometheus) | ✓ | |
| [go.opentelemetry.io/otel/exporters/stdout/stdoutmetric](./stdout/stdoutmetric) | ✓ | |
| [go.opentelemetry.io/otel/exporters/stdout/stdouttrace](./stdout/stdouttrace) | | ✓ |
| [go.opentelemetry.io/otel/exporters/zipkin](./zipkin) | | ✓ |
| Exporter Package | Metrics | Traces |
|:-----------------------------------------------------------------------------------------------------:|:-------:|:------:|
| [go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc](./otlp/otlpmetric/otlpmetricgrpc) | ✓ | |
| [go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp](./otlp/otlpmetric/otlpmetrichttp) | ✓ | |
| [go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc](./otlp/otlptrace/otlptracegrpc) | | ✓ |
| [go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp](./otlp/otlptrace/otlptracehttp) | | ✓ |
| [go.opentelemetry.io/otel/exporters/prometheus](./prometheus) | ✓ | |
| [go.opentelemetry.io/otel/exporters/stdout/stdoutmetric](./stdout/stdoutmetric) | ✓ | |
| [go.opentelemetry.io/otel/exporters/stdout/stdouttrace](./stdout/stdouttrace) | | ✓ |
| [go.opentelemetry.io/otel/exporters/zipkin](./zipkin) | | ✓ |
See the [OpenTelemetry registry] for 3rd-party exporters compatible with this project.

42
exporters/otlp/otlpmetric/otlpmetricgrpc/README.md
View File

@ -1,42 +0,0 @@
# OpenTelemetry-Go OTLP Metric gRPC Exporter
[![Go Reference](https://pkg.go.dev/badge/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc.svg)](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc)
[OpenTelemetry Protocol Exporter](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.20.0/specification/protocol/exporter.md) implementation using gRPC.
## Installation
```
go get -u go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc
```
## Usage
Exporters should be created using the [New](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc#New) and used with a [PeriodicReader].
## Environment Variables
The following environment variables can be used (instead of options objects) to override the default configuration.
| Name | Description | Default | Override with |
|------|-------------|---------|---------------|
| `OTEL_EXPORTER_OTLP_ENDPOINT` | Endpoint to which the exporter is going to send traces or metrics. If the scheme is `http` or `unix` this will also set `OTEL_EXPORTER_OTLP_INSECURE` to true | `https://localhost:4317` | `OTEL_EXPORTER_OTLP_METRICS_ENDPOINT`, [WithEndpoint()] |
| `OTEL_EXPORTER_OTLP_METRICS_ENDPOINT` | Endpoint to which the exporter is going to send metrics. If the scheme is `http` or `unix` this will also set `OTEL_EXPORTER_OTLP_INSECURE` to true | `https://localhost:4317` | [WithEndpoint()] |
| `OTEL_EXPORTER_OTLP_INSECURE` | If set to true the connection will not attempt to use TLS when connecting | `false` | `OTEL_EXPORTER_OTLP_METRICS_INSECURE`, [WithInsecure()] |
| `OTEL_EXPORTER_OTLP_METRICS_INSECURE` | If set to true the connection will not attempt to use TLS when connecting | `false` | [WithInsecure()] |
| `OTEL_EXPORTER_OTLP_HEADERS` | A list of headers to send with each request | none | `OTEL_EXPORTER_OTLP_METRICS_HEADERS`, [WithHeaders()] |
| `OTEL_EXPORTER_OTLP_METRICS_HEADERS` | A list of headers to send with each request | none | [WithHeaders()] |
| `OTEL_EXPORTER_OTLP_COMPRESSION` | Sets the compressions used in the connection. Supports `none` and `gzip`. Must import the compressor for gzip to work. | none | `OTEL_EXPORTER_OTLP_METRICS_COMPRESSION`, [WithCompressor()] |
| `OTEL_EXPORTER_OTLP_METRICS_COMPRESSION` | Sets the compressions used in the connection. Supports `none` and `gzip`. Must import the compressor for gzip to work. | none | [WithCompressor()] |
| `OTEL_EXPORTER_OTLP_TIMEOUT` | Sets the max amount of time (as milliseconds) an Exporter will attempt an export | `10000` | `OTEL_EXPORTER_OTLP_METRICS_TIMEOUT`, [WithTimeout()] |
| `OTEL_EXPORTER_OTLP_METRICS_TIMEOUT` | Sets the max amount of time (as milliseconds) an Exporter will attempt an export | `10000` | [WithTimeout()] |
| `OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE` | The aggregation temporality to use on the basis of instrument kind. Available values are `Cumulative`, `Delta`, and `LowMemory`. See [The OTLP Exporter Specification] for more details | `Cumulative` | [WithTemporalitySelector()] |
[PeriodicReader]: https://pkg.go.dev/go.opentelemetry.io/otel/sdk/metric#NewPeriodicReader
[WithEndpoint()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc#WithEndpoint
[WithInsecure()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc#WithInsecure
[WithHeaders()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc#WithHeaders
[WithCompressor()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc#WithCompressor
[WithTimeout()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc#WithTimeout
[The OTLP Exporter Specification]: https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/sdk_exporters/otlp.md#additional-configuration
[WithTemporalitySelector()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc#WithTemporalitySelector

8
exporters/otlp/otlpmetric/otlpmetricgrpc/config.go
View File

@ -109,13 +109,7 @@ func compressorToCompression(compressor string) oconf.Compression {
}
// WithCompressor sets the compressor the gRPC client uses.
//
// It is the responsibility of the caller to ensure that the compressor set
// has been registered with google.golang.org/grpc/encoding (see
// encoding.RegisterCompressor for more information). For example, to register
// the gzip compressor import the package:
//
// import _ "google.golang.org/grpc/encoding/gzip"
// Supported compressor values: "gzip".
//
// If the OTEL_EXPORTER_OTLP_COMPRESSION or
// OTEL_EXPORTER_OTLP_METRICS_COMPRESSION environment variable is set, and

83
exporters/otlp/otlpmetric/otlpmetricgrpc/doc.go
View File

@ -12,6 +12,85 @@
// See the License for the specific language governing permissions and
// limitations under the License.
// Package otlpmetricgrpc provides an otlpmetric.Exporter that communicates
// with an OTLP receiving endpoint using gRPC.
/*
Package otlpmetricgrpc provides an OTLP metrics exporter using gRPC.
By default the telemetry is sent to https://localhost:4317.
Exporter should be created using [New] and used with a [metric.PeriodicReader].
The environment variables described below can be used for configuration.
OTEL_EXPORTER_OTLP_ENDPOINT, OTEL_EXPORTER_OTLP_METRICS_ENDPOINT (default: "https://localhost:4317") -
target to which the exporter sends telemetry.
The target syntax is defined in https://github.com/grpc/grpc/blob/master/doc/naming.md.
The value must contain a host.
The value may additionally a port, a scheme, and a path.
The value accepts "http" and "https" scheme.
The value should not contain a query string or fragment.
OTEL_EXPORTER_OTLP_METRICS_ENDPOINT takes precedence over OTEL_EXPORTER_OTLP_ENDPOINT.
The configuration can be overridden by [WithEndpoint], [WithInsecure], [WithGRPCConn] options.
OTEL_EXPORTER_OTLP_INSECURE, OTEL_EXPORTER_OTLP_METRICS_INSECURE (default: "false") -
setting "true" disables client transport security for the exporter's gRPC connection.
You can use this only when an endpoint is provided without the http or https scheme.
OTEL_EXPORTER_OTLP_ENDPOINT, OTEL_EXPORTER_OTLP_METRICS_ENDPOINT setting overrides
the scheme defined via OTEL_EXPORTER_OTLP_ENDPOINT, OTEL_EXPORTER_OTLP_METRICS_ENDPOINT.
OTEL_EXPORTER_OTLP_METRICS_INSECURE takes precedence over OTEL_EXPORTER_OTLP_INSECURE.
The configuration can be overridden by [WithInsecure], [WithGRPCConn] options.
OTEL_EXPORTER_OTLP_HEADERS, OTEL_EXPORTER_OTLP_METRICS_HEADERS (default: none) -
key-value pairs used as gRPC metadata associated with gRPC requests.
The value is expected to be represented in a format matching to the [W3C Baggage HTTP Header Content Format],
except that additional semi-colon delimited metadata is not supported.
Example value: "key1=value1,key2=value2".
OTEL_EXPORTER_OTLP_METRICS_HEADERS takes precedence over OTEL_EXPORTER_OTLP_HEADERS.
The configuration can be overridden by [WithHeaders] option.
OTEL_EXPORTER_OTLP_TIMEOUT, OTEL_EXPORTER_OTLP_METRICS_TIMEOUT (default: "10000") -
maximum time in milliseconds the OTLP exporter waits for each batch export.
OTEL_EXPORTER_OTLP_METRICS_TIMEOUT takes precedence over OTEL_EXPORTER_OTLP_TIMEOUT.
The configuration can be overridden by [WithTimeout] option.
OTEL_EXPORTER_OTLP_COMPRESSION, OTEL_EXPORTER_OTLP_METRICS_COMPRESSION (default: none) -
the gRPC compressor the exporter uses.
Supported value: "gzip".
OTEL_EXPORTER_OTLP_METRICS_COMPRESSION takes precedence over OTEL_EXPORTER_OTLP_COMPRESSION.
The configuration can be overridden by [WithCompressor], [WithGRPCConn] options.
OTEL_EXPORTER_OTLP_CERTIFICATE, OTEL_EXPORTER_OTLP_METRICS_CERTIFICATE (default: none) -
the filepath to the trusted certificate to use when verifying a server's TLS credentials.
OTEL_EXPORTER_OTLP_METRICS_CERTIFICATE takes precedence over OTEL_EXPORTER_OTLP_CERTIFICATE.
The configuration can be overridden by [WithTLSCredentials], [WithGRPCConn] options.
OTEL_EXPORTER_OTLP_CLIENT_CERTIFICATE, OTEL_EXPORTER_OTLP_METRICS_CLIENT_CERTIFICATE (default: none) -
the filepath to the client certificate/chain trust for clients private key to use in mTLS communication in PEM format.
OTEL_EXPORTER_OTLP_METRICS_CLIENT_CERTIFICATE takes precedence over OTEL_EXPORTER_OTLP_CLIENT_CERTIFICATE.
The configuration can be overridden by [WithTLSCredentials], [WithGRPCConn] options.
OTEL_EXPORTER_OTLP_CLIENT_KEY, OTEL_EXPORTER_OTLP_METRICS_CLIENT_KEY (default: none) -
the filepath to the clients private key to use in mTLS communication in PEM format.
OTEL_EXPORTER_OTLP_METRICS_CLIENT_KEY takes precedence over OTEL_EXPORTER_OTLP_CLIENT_KEY.
The configuration can be overridden by [WithTLSCredentials], [WithGRPCConn] option.
OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE (default: "cumulative") -
aggregation temporality to use on the basis of instrument kind. Supported values:
- "cumulative" - Cumulative aggregation temporality for all instrument kinds,
- "delta" - Delta aggregation temporality for Counter, Asynchronous Counter and Histogram instrument kinds;
Cumulative aggregation for UpDownCounter and Asynchronous UpDownCounter instrument kinds,
- "lowmemory" - Delta aggregation temporality for Synchronous Counter and Histogram instrument kinds;
Cumulative aggregation temporality for Synchronous UpDownCounter, Asynchronous Counter, and Asynchronous UpDownCounter instrument kinds.
The configuration can be overridden by [WithTemporalitySelector] option.
OTEL_EXPORTER_OTLP_METRICS_DEFAULT_HISTOGRAM_AGGREGATION (default: "explicit_bucket_histogram") -
default aggregation to use for histogram instruments. Supported values:
- "explicit_bucket_histogram" - [Explicit Bucket Histogram Aggregation],
- "base2_exponential_bucket_histogram" - [Base2 Exponential Bucket Histogram Aggregation].
The configuration can be overridden by [WithAggregationSelector] option.
[W3C Baggage HTTP Header Content Format]: https://www.w3.org/TR/baggage/#header-content
[Explicit Bucket Histogram Aggregation]: https://github.com/open-telemetry/opentelemetry-specification/blob/v1.26.0/specification/metrics/sdk.md#explicit-bucket-histogram-aggregation
[Base2 Exponential Bucket Histogram Aggregation]: https://github.com/open-telemetry/opentelemetry-specification/blob/v1.26.0/specification/metrics/sdk.md#base2-exponential-bucket-histogram-aggregation
*/
package otlpmetricgrpc // import "go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc"

43
exporters/otlp/otlpmetric/otlpmetrichttp/README.md
View File

@ -1,43 +0,0 @@
# OpenTelemetry-Go OTLP Metric HTTP Exporter
[![Go Reference](https://pkg.go.dev/badge/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp.svg)](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp)
[OpenTelemetry Protocol Exporter](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.20.0/specification/protocol/exporter.md) implementation using HTTP with protobuf-encoded payloads.
## Installation
```
go get -u go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp
```
## Usage
Exporters should be created using the [New](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp#New) and used with a [PeriodicReader].
## Environment Variables
The following environment variables can be used (instead of options objects) to override the default configuration.
| Name | Description | Default | Override with |
|------|-------------|---------|---------------|
| `OTEL_EXPORTER_OTLP_ENDPOINT` | Endpoint to which the exporter is going to send traces or metrics. If the scheme is `http` or `unix` this will also set `OTEL_EXPORTER_OTLP_INSECURE` to true | `https://localhost:4317` | `OTEL_EXPORTER_OTLP_METRICS_ENDPOINT`, [WithEndpoint()] |
| `OTEL_EXPORTER_OTLP_METRICS_ENDPOINT` | Endpoint to which the exporter is going to send metrics. If the scheme is `http` or `unix` this will also set `OTEL_EXPORTER_OTLP_INSECURE` to true | `https://localhost:4317/v1/metrics` | [WithEndpoint()] and [WithURLPath()] |
| `OTEL_EXPORTER_OTLP_INSECURE` | If set to true the connection will not attempt to use TLS when connecting | `false` | `OTEL_EXPORTER_OTLP_METRICS_INSECURE`, [WithInsecure()] |
| `OTEL_EXPORTER_OTLP_METRICS_INSECURE` | If set to true the connection will not attempt to use TLS when connecting | `false` | [WithInsecure()] |
| `OTEL_EXPORTER_OTLP_HEADERS` | A list of headers to send with each request | none | `OTEL_EXPORTER_OTLP_METRICS_HEADERS`, [WithHeaders()] |
| `OTEL_EXPORTER_OTLP_METRICS_HEADERS` | A list of headers to send with each request | none | [WithHeaders()] |
| `OTEL_EXPORTER_OTLP_COMPRESSION` | Sets the compressions used in the connection. Supports `none` and `gzip`. Must import the compressor for gzip to work. | none | `OTEL_EXPORTER_OTLP_METRICS_COMPRESSION`, [WithCompression()] |
| `OTEL_EXPORTER_OTLP_METRICS_COMPRESSION` | Sets the compressions used in the connection. Supports `none` and `gzip`. Must import the compressor for gzip to work. | none | [WithCompression()] |
| `OTEL_EXPORTER_OTLP_TIMEOUT` | Sets the max amount of time (as milliseconds) an Exporter will attempt an export | `10000` | `OTEL_EXPORTER_OTLP_METRICS_TIMEOUT`, [WithTimeout()] |
| `OTEL_EXPORTER_OTLP_METRICS_TIMEOUT` | Sets the max amount of time (as milliseconds) an Exporter will attempt an export | `10000` | [WithTimeout()] |
| `OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE` | The aggregation temporality to use on the basis of instrument kind. Available values are `Cumulative`, `Delta`, and `LowMemory`. See [The OTLP Exporter Specification] for more details | `Cumulative` | [WithTemporalitySelector()] |
[WithEndpoint()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp#WithEndpoint
[WithURLPath()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp#WithURLPath
[WithInsecure()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp#WithInsecure
[WithHeaders()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp#WithHeaders
[WithCompression()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp#WithCompression
[WithCompressor()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp#WithCompressor
[WithTimeout()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp#WithTimeout
[The OTLP Exporter Specification]: https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/sdk_exporters/otlp.md#additional-configuration
[WithTemporalitySelector()]: https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp#WithTemporalitySelector

81
exporters/otlp/otlpmetric/otlpmetrichttp/doc.go
View File

@ -12,7 +12,82 @@
// See the License for the specific language governing permissions and
// limitations under the License.
// Package otlpmetrichttp provides an otlpmetric.Exporter that communicates
// with an OTLP receiving endpoint using protobuf encoded metric data over
// HTTP.
/*
Package otlpmetrichttp provides an OTLP metrics exporter using HTTP with protobuf payloads.
By default the telemetry is sent to https://localhost:4318/v1/metrics.
Exporter should be created using [New] and used with a [metric.PeriodicReader].
The environment variables described below can be used for configuration.
OTEL_EXPORTER_OTLP_ENDPOINT (default: "https://localhost:4318") -
target base URL ("/v1/metrics" is appended) to which the exporter sends telemetry.
The value must contain a scheme ("http" or "https") and host.
The value may additionally contain a port and a path.
The value should not contain a query string or fragment.
The configuration can be overridden by OTEL_EXPORTER_OTLP_METRICS_ENDPOINT
environment variable and by [WithEndpoint], [WithInsecure] options.
OTEL_EXPORTER_OTLP_METRICS_ENDPOINT (default: "https://localhost:4318/v1/metrics") -
target URL to which the exporter sends telemetry.
The value must contain a scheme ("http" or "https") and host.
The value may additionally contain a port and a path.
The value should not contain a query string or fragment.
The configuration can be overridden by [WithEndpoint], [WitnInsecure], [WithURLPath] options.
OTEL_EXPORTER_OTLP_HEADERS, OTEL_EXPORTER_OTLP_METRICS_HEADERS (default: none) -
key-value pairs used as headers associated with HTTP requests.
The value is expected to be represented in a format matching to the [W3C Baggage HTTP Header Content Format],
except that additional semi-colon delimited metadata is not supported.
Example value: "key1=value1,key2=value2".
OTEL_EXPORTER_OTLP_METRICS_HEADERS takes precedence over OTEL_EXPORTER_OTLP_HEADERS.
The configuration can be overridden by [WithHeaders] option.
OTEL_EXPORTER_OTLP_TIMEOUT, OTEL_EXPORTER_OTLP_METRICS_TIMEOUT (default: "10000") -
maximum time in milliseconds the OTLP exporter waits for each batch export.
OTEL_EXPORTER_OTLP_METRICS_TIMEOUT takes precedence over OTEL_EXPORTER_OTLP_TIMEOUT.
The configuration can be overridden by [WithTimeout] option.
OTEL_EXPORTER_OTLP_COMPRESSION, OTEL_EXPORTER_OTLP_METRICS_COMPRESSION (default: none) -
compression strategy the exporter uses to compress the HTTP body.
Supported values: "gzip".
OTEL_EXPORTER_OTLP_METRICS_COMPRESSION takes precedence over OTEL_EXPORTER_OTLP_COMPRESSION.
The configuration can be overridden by [WithCompression] option.
OTEL_EXPORTER_OTLP_CERTIFICATE, OTEL_EXPORTER_OTLP_METRICS_CERTIFICATE (default: none) -
filepath to the trusted certificate to use when verifying a server's TLS credentials.
OTEL_EXPORTER_OTLP_METRICS_CERTIFICATE takes precedence over OTEL_EXPORTER_OTLP_CERTIFICATE.
The configuration can be overridden by [WithTLSClientConfig] option.
OTEL_EXPORTER_OTLP_CLIENT_CERTIFICATE, OTEL_EXPORTER_OTLP_METRICS_CLIENT_CERTIFICATE (default: none) -
filepath to the client certificate/chain trust for clients private key to use in mTLS communication in PEM format.
OTEL_EXPORTER_OTLP_METRICS_CLIENT_CERTIFICATE takes precedence over OTEL_EXPORTER_OTLP_CLIENT_CERTIFICATE.
The configuration can be overridden by [WithTLSClientConfig] option.
OTEL_EXPORTER_OTLP_CLIENT_KEY, OTEL_EXPORTER_OTLP_METRICS_CLIENT_KEY (default: none) -
filepath to the clients private key to use in mTLS communication in PEM format.
OTEL_EXPORTER_OTLP_METRICS_CLIENT_KEY takes precedence over OTEL_EXPORTER_OTLP_CLIENT_KEY.
The configuration can be overridden by [WithTLSClientConfig] option.
OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE (default: "cumulative") -
aggregation temporality to use on the basis of instrument kind. Supported values:
- "cumulative" - Cumulative aggregation temporality for all instrument kinds,
- "delta" - Delta aggregation temporality for Counter, Asynchronous Counter and Histogram instrument kinds;
Cumulative aggregation for UpDownCounter and Asynchronous UpDownCounter instrument kinds,
- "lowmemory" - Delta aggregation temporality for Synchronous Counter and Histogram instrument kinds;
Cumulative aggregation temporality for Synchronous UpDownCounter, Asynchronous Counter, and Asynchronous UpDownCounter instrument kinds.
The configuration can be overridden by [WithTemporalitySelector] option.
OTEL_EXPORTER_OTLP_METRICS_DEFAULT_HISTOGRAM_AGGREGATION (default: "explicit_bucket_histogram") -
default aggregation to use for histogram instruments. Supported values:
- "explicit_bucket_histogram" - [Explicit Bucket Histogram Aggregation],
- "base2_exponential_bucket_histogram" - [Base2 Exponential Bucket Histogram Aggregation].
The configuration can be overridden by [WithAggregationSelector] option.
[W3C Baggage HTTP Header Content Format]: https://www.w3.org/TR/baggage/#header-content
[Explicit Bucket Histogram Aggregation]: https://github.com/open-telemetry/opentelemetry-specification/blob/v1.26.0/specification/metrics/sdk.md#explicit-bucket-histogram-aggregation
[Base2 Exponential Bucket Histogram Aggregation]: https://github.com/open-telemetry/opentelemetry-specification/blob/v1.26.0/specification/metrics/sdk.md#base2-exponential-bucket-histogram-aggregation
*/
package otlpmetrichttp // import "go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp"

51
exporters/otlp/otlptrace/README.md
View File

@ -1,51 +0,0 @@
# OpenTelemetry-Go OTLP Span Exporter
[![Go Reference](https://pkg.go.dev/badge/go.opentelemetry.io/otel/exporters/otlp/otlptrace.svg)](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlptrace)
[OpenTelemetry Protocol Exporter](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.20.0/specification/protocol/exporter.md) implementation.
## Installation
```
go get -u go.opentelemetry.io/otel/exporters/otlp/otlptrace
```
## Examples
- [HTTP Exporter setup and examples](./otlptracehttp/example_test.go)
- [Full example of gRPC Exporter sending telemetry to a local collector](../../../example/otel-collector)
## [`otlptrace`](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlptrace)
The `otlptrace` package provides an exporter implementing the OTel span exporter interface.
This exporter is configured using a client satisfying the `otlptrace.Client` interface.
This client handles the transformation of data into wire format and the transmission of that data to the collector.
## [`otlptracegrpc`](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc)
The `otlptracegrpc` package implements a client for the span exporter that sends trace telemetry data to the collector using gRPC with protobuf-encoded payloads.
## [`otlptracehttp`](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp)
The `otlptracehttp` package implements a client for the span exporter that sends trace telemetry data to the collector using HTTP with protobuf-encoded payloads.
## Configuration
### Environment Variables
The following environment variables can be used (instead of options objects) to
override the default configuration. For more information about how each of
these environment variables is interpreted, see [the OpenTelemetry
specification](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.20.0/specification/protocol/exporter.md).
| Environment variable | Option | Default value |
| ------------------------------------------------------------------------ |------------------------------ | -------------------------------------------------------- |
| `OTEL_EXPORTER_OTLP_ENDPOINT` `OTEL_EXPORTER_OTLP_TRACES_ENDPOINT` | `WithEndpoint` `WithInsecure` | `https://localhost:4317` or `https://localhost:4318`[^1] |
| `OTEL_EXPORTER_OTLP_CERTIFICATE` `OTEL_EXPORTER_OTLP_TRACES_CERTIFICATE` | `WithTLSClientConfig` | |
| `OTEL_EXPORTER_OTLP_HEADERS` `OTEL_EXPORTER_OTLP_TRACES_HEADERS` | `WithHeaders` | |
| `OTEL_EXPORTER_OTLP_COMPRESSION` `OTEL_EXPORTER_OTLP_TRACES_COMPRESSION` | `WithCompression` | |
| `OTEL_EXPORTER_OTLP_TIMEOUT` `OTEL_EXPORTER_OTLP_TRACES_TIMEOUT` | `WithTimeout` | `10s` |
[^1]: The gRPC client defaults to `https://localhost:4317` and the HTTP client `https://localhost:4318`.
Configuration using options have precedence over the environment variables.

21
exporters/otlp/otlptrace/doc.go Normal file
View File

@ -0,0 +1,21 @@
// 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 otlptrace contains abstractions for OTLP span exporters.
See the official OTLP span exporter implementations:
- [go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc],
- [go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp].
*/
package otlptrace // import "go.opentelemetry.io/otel/exporters/otlp/otlptrace"

77
exporters/otlp/otlptrace/otlptracegrpc/doc.go Normal file
View File

@ -0,0 +1,77 @@
// 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 otlptracegrpc provides an OTLP span exporter using gRPC.
By default the telemetry is sent to https://localhost:4317.
Exporter should be created using [New].
The environment variables described below can be used for configuration.
OTEL_EXPORTER_OTLP_ENDPOINT, OTEL_EXPORTER_OTLP_TRACES_ENDPOINT (default: "https://localhost:4317") -
target to which the exporter sends telemetry.
The target syntax is defined in https://github.com/grpc/grpc/blob/master/doc/naming.md.
The value must contain a host.
The value may additionally a port, a scheme, and a path.
The value accepts "http" and "https" scheme.
The value should not contain a query string or fragment.
OTEL_EXPORTER_OTLP_TRACES_ENDPOINT takes precedence over OTEL_EXPORTER_OTLP_ENDPOINT.
The configuration can be overridden by [WithEndpoint], [WithInsecure], [WithGRPCConn] options.
OTEL_EXPORTER_OTLP_INSECURE, OTEL_EXPORTER_OTLP_TRACES_INSECURE (default: "false") -
setting "true" disables client transport security for the exporter's gRPC connection.
You can use this only when an endpoint is provided without the http or https scheme.
OTEL_EXPORTER_OTLP_ENDPOINT, OTEL_EXPORTER_OTLP_TRACES_ENDPOINT setting overrides
the scheme defined via OTEL_EXPORTER_OTLP_ENDPOINT, OTEL_EXPORTER_OTLP_TRACES_ENDPOINT.
OTEL_EXPORTER_OTLP_TRACES_INSECURE takes precedence over OTEL_EXPORTER_OTLP_INSECURE.
The configuration can be overridden by [WithInsecure], [WithGRPCConn] options.
OTEL_EXPORTER_OTLP_HEADERS, OTEL_EXPORTER_OTLP_TRACES_HEADERS (default: none) -
key-value pairs used as gRPC metadata associated with gRPC requests.
The value is expected to be represented in a format matching to the [W3C Baggage HTTP Header Content Format],
except that additional semi-colon delimited metadata is not supported.
Example value: "key1=value1,key2=value2".
OTEL_EXPORTER_OTLP_TRACES_HEADERS takes precedence over OTEL_EXPORTER_OTLP_HEADERS.
The configuration can be overridden by [WithHeaders] option.
OTEL_EXPORTER_OTLP_TIMEOUT, OTEL_EXPORTER_OTLP_TRACES_TIMEOUT (default: "10000") -
maximum time in milliseconds the OTLP exporter waits for each batch export.
OTEL_EXPORTER_OTLP_TRACES_TIMEOUT takes precedence over OTEL_EXPORTER_OTLP_TIMEOUT.
The configuration can be overridden by [WithTimeout] option.
OTEL_EXPORTER_OTLP_COMPRESSION, OTEL_EXPORTER_OTLP_TRACES_COMPRESSION (default: none) -
the gRPC compressor the exporter uses.
Supported value: "gzip".
OTEL_EXPORTER_OTLP_TRACES_COMPRESSION takes precedence over OTEL_EXPORTER_OTLP_COMPRESSION.
The configuration can be overridden by [WithCompressor], [WithGRPCConn] options.
OTEL_EXPORTER_OTLP_CERTIFICATE, OTEL_EXPORTER_OTLP_TRACES_CERTIFICATE (default: none) -
the filepath to the trusted certificate to use when verifying a server's TLS credentials.
OTEL_EXPORTER_OTLP_TRACES_CERTIFICATE takes precedence over OTEL_EXPORTER_OTLP_CERTIFICATE.
The configuration can be overridden by [WithTLSCredentials], [WithGRPCConn] options.
OTEL_EXPORTER_OTLP_CLIENT_CERTIFICATE, OTEL_EXPORTER_OTLP_TRACES_CLIENT_CERTIFICATE (default: none) -
the filepath to the client certificate/chain trust for clients private key to use in mTLS communication in PEM format.
OTEL_EXPORTER_OTLP_TRACES_CLIENT_CERTIFICATE takes precedence over OTEL_EXPORTER_OTLP_CLIENT_CERTIFICATE.
The configuration can be overridden by [WithTLSCredentials], [WithGRPCConn] options.
OTEL_EXPORTER_OTLP_CLIENT_KEY, OTEL_EXPORTER_OTLP_TRACES_CLIENT_KEY (default: none) -
the filepath to the clients private key to use in mTLS communication in PEM format.
OTEL_EXPORTER_OTLP_TRACES_CLIENT_KEY takes precedence over OTEL_EXPORTER_OTLP_CLIENT_KEY.
The configuration can be overridden by [WithTLSCredentials], [WithGRPCConn] option.
[W3C Baggage HTTP Header Content Format]: https://www.w3.org/TR/baggage/#header-content
*/
package otlptracegrpc // import "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"

42
exporters/otlp/otlptrace/otlptracegrpc/example_test.go Normal file
View File

@ -0,0 +1,42 @@
// 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 otlptracegrpc_test
import (
"context"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
"go.opentelemetry.io/otel/sdk/trace"
)
func Example() {
ctx := context.Background()
exp, err := otlptracegrpc.New(ctx)
if err != nil {
panic(err)
}
tracerProvider := trace.NewTracerProvider(trace.WithBatcher(exp))
defer func() {
if err := tracerProvider.Shutdown(ctx); err != nil {
panic(err)
}
}()
otel.SetTracerProvider(tracerProvider)
// From here, the tracerProvider can be used by instrumentation to collect
// telemetry.
}

8
exporters/otlp/otlptrace/otlptracegrpc/options.go
View File

@ -93,13 +93,7 @@ func compressorToCompression(compressor string) otlpconfig.Compression {
}
// WithCompressor sets the compressor for the gRPC client 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.
// requests. Supported compressor values: "gzip".
func WithCompressor(compressor string) Option {
return wrappedOption{otlpconfig.WithCompression(compressorToCompression(compressor))}
}

59
exporters/otlp/otlptrace/otlptracehttp/doc.go
View File

@ -13,7 +13,62 @@
// limitations under the License.
/*
Package otlptracehttp a client that sends traces to the collector using HTTP
with binary protobuf payloads.
Package otlptracehttp provides an OTLP span exporter using HTTP with protobuf payloads.
By default the telemetry is sent to https://localhost:4318/v1/traces.
Exporter should be created using [New].
The environment variables described below can be used for configuration.
OTEL_EXPORTER_OTLP_ENDPOINT (default: "https://localhost:4318") -
target base URL ("/v1/traces" is appended) to which the exporter sends telemetry.
The value must contain a scheme ("http" or "https") and host.
The value may additionally contain a port and a path.
The value should not contain a query string or fragment.
The configuration can be overridden by OTEL_EXPORTER_OTLP_TRACES_ENDPOINT
environment variable and by [WithEndpoint], [WithInsecure] options.
OTEL_EXPORTER_OTLP_TRACES_ENDPOINT (default: "https://localhost:4318/v1/traces") -
target URL to which the exporter sends telemetry.
The value must contain a scheme ("http" or "https") and host.
The value may additionally contain a port and a path.
The value should not contain a query string or fragment.
The configuration can be overridden by [WithEndpoint], [WitnInsecure], [WithURLPath] options.
OTEL_EXPORTER_OTLP_HEADERS, OTEL_EXPORTER_OTLP_TRACES_HEADERS (default: none) -
key-value pairs used as headers associated with HTTP requests.
The value is expected to be represented in a format matching to the [W3C Baggage HTTP Header Content Format],
except that additional semi-colon delimited metadata is not supported.
Example value: "key1=value1,key2=value2".
OTEL_EXPORTER_OTLP_TRACES_HEADERS takes precedence over OTEL_EXPORTER_OTLP_HEADERS.
The configuration can be overridden by [WithHeaders] option.
OTEL_EXPORTER_OTLP_TIMEOUT, OTEL_EXPORTER_OTLP_TRACES_TIMEOUT (default: "10000") -
maximum time in milliseconds the OTLP exporter waits for each batch export.
OTEL_EXPORTER_OTLP_TRACES_TIMEOUT takes precedence over OTEL_EXPORTER_OTLP_TIMEOUT.
The configuration can be overridden by [WithTimeout] option.
OTEL_EXPORTER_OTLP_COMPRESSION, OTEL_EXPORTER_OTLP_TRACES_COMPRESSION (default: none) -
the compression strategy the exporter uses to compress the HTTP body.
Supported value: "gzip".
OTEL_EXPORTER_OTLP_TRACES_COMPRESSION takes precedence over OTEL_EXPORTER_OTLP_COMPRESSION.
The configuration can be overridden by [WithCompression] option.
OTEL_EXPORTER_OTLP_CERTIFICATE, OTEL_EXPORTER_OTLP_TRACES_CERTIFICATE (default: none) -
the filepath to the trusted certificate to use when verifying a server's TLS credentials.
OTEL_EXPORTER_OTLP_TRACES_CERTIFICATE takes precedence over OTEL_EXPORTER_OTLP_CERTIFICATE.
The configuration can be overridden by [WithTLSClientConfig] option.
OTEL_EXPORTER_OTLP_CLIENT_CERTIFICATE, OTEL_EXPORTER_OTLP_TRACES_CLIENT_CERTIFICATE (default: none) -
the filepath to the client certificate/chain trust for clients private key to use in mTLS communication in PEM format.
OTEL_EXPORTER_OTLP_TRACES_CLIENT_CERTIFICATE takes precedence over OTEL_EXPORTER_OTLP_CLIENT_CERTIFICATE.
The configuration can be overridden by [WithTLSClientConfig] option.
OTEL_EXPORTER_OTLP_CLIENT_KEY, OTEL_EXPORTER_OTLP_TRACES_CLIENT_KEY (default: none) -
the filepath to the clients private key to use in mTLS communication in PEM format.
OTEL_EXPORTER_OTLP_TRACES_CLIENT_KEY takes precedence over OTEL_EXPORTER_OTLP_CLIENT_KEY.
The configuration can be overridden by [WithTLSClientConfig] option.
[W3C Baggage HTTP Header Content Format]: https://www.w3.org/TR/baggage/#header-content
*/
package otlptracehttp // import "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"

72
exporters/otlp/otlptrace/otlptracehttp/example_test.go
View File

@ -16,79 +16,27 @@ package otlptracehttp_test
import (
"context"
"fmt"
"log"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
"go.opentelemetry.io/otel/sdk/resource"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
"go.opentelemetry.io/otel/trace"
"go.opentelemetry.io/otel/sdk/trace"
)
const (
instrumentationName = "github.com/instrumentron"
instrumentationVersion = "0.1.0"
)
var tracer = otel.GetTracerProvider().Tracer(
instrumentationName,
trace.WithInstrumentationVersion(instrumentationVersion),
trace.WithSchemaURL(semconv.SchemaURL),
)
func add(ctx context.Context, x, y int64) int64 {
var span trace.Span
_, span = tracer.Start(ctx, "Addition")
defer span.End()
return x + y
}
func multiply(ctx context.Context, x, y int64) int64 {
var span trace.Span
_, span = tracer.Start(ctx, "Multiplication")
defer span.End()
return x * y
}
func newResource() *resource.Resource {
return resource.NewWithAttributes(
semconv.SchemaURL,
semconv.ServiceName("otlptrace-example"),
semconv.ServiceVersion("0.0.1"),
)
}
func installExportPipeline(ctx context.Context) (func(context.Context) error, error) {
exporter, err := otlptracehttp.New(ctx)
if err != nil {
return nil, fmt.Errorf("creating OTLP trace exporter: %w", err)
}
tracerProvider := sdktrace.NewTracerProvider(
sdktrace.WithBatcher(exporter),
sdktrace.WithResource(newResource()),
)
otel.SetTracerProvider(tracerProvider)
return tracerProvider.Shutdown, nil
}
func Example() {
ctx := context.Background()
// Registers a tracer Provider globally.
shutdown, err := installExportPipeline(ctx)
exp, err := otlptracehttp.New(ctx)
if err != nil {
log.Fatal(err)
panic(err)
}
tracerProvider := trace.NewTracerProvider(trace.WithBatcher(exp))
defer func() {
if err := shutdown(ctx); err != nil {
log.Fatal(err)
if err := tracerProvider.Shutdown(ctx); err != nil {
panic(err)
}
}()
otel.SetTracerProvider(tracerProvider)
log.Println("the answer is", add(ctx, multiply(ctx, multiply(ctx, 2, 2), 10), 2))
// From here, the tracerProvider can be used by instrumentation to collect
// telemetry.
}