Add otlploghttp package documentation

exporters/otlp/otlplog/otlploghttp/doc.go

@@ -1,6 +1,63 @@
 // 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 provides an OTLP log exporter. The exporter uses HTTP to
+transport OTLP protobuf payloads.
+
+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/logs" 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_LOGS_ENDPOINT
+environment variable and by [WithEndpoint], [WithEndpointURL], [WithInsecure] options.
+
+OTEL_EXPORTER_OTLP_LOGS_ENDPOINT (default: "https://localhost:4318/v1/logs") -
+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], [WithEndpointURL], [WitnInsecure], and [WithURLPath] options.
+
+OTEL_EXPORTER_OTLP_HEADERS, OTEL_EXPORTER_OTLP_LOGS_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_LOGS_HEADERS takes precedence over OTEL_EXPORTER_OTLP_HEADERS.
+The configuration can be overridden by [WithHeaders] option.
+
+OTEL_EXPORTER_OTLP_TIMEOUT, OTEL_EXPORTER_OTLP_LOGS_TIMEOUT (default: "10000") -
+maximum time in milliseconds the OTLP exporter waits for each batch export.
+OTEL_EXPORTER_OTLP_LOGS_TIMEOUT takes precedence over OTEL_EXPORTER_OTLP_TIMEOUT.
+The configuration can be overridden by [WithTimeout] option.
+
+OTEL_EXPORTER_OTLP_COMPRESSION, OTEL_EXPORTER_OTLP_LOGS_COMPRESSION (default: none) -
+the compression strategy the exporter uses to compress the HTTP body.
+Supported value: "gzip".
+OTEL_EXPORTER_OTLP_LOGS_COMPRESSION takes precedence over OTEL_EXPORTER_OTLP_COMPRESSION.
+The configuration can be overridden by [WithCompression] option.
+
+OTEL_EXPORTER_OTLP_CERTIFICATE, OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE (default: none) -
+the filepath to the trusted certificate to use when verifying a server's TLS credentials.
+OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE takes precedence over OTEL_EXPORTER_OTLP_CERTIFICATE.
+The configuration can be overridden by [WithTLSClientConfig] option.
+
+OTEL_EXPORTER_OTLP_CLIENT_CERTIFICATE, OTEL_EXPORTER_OTLP_LOGS_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_LOGS_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_LOGS_CLIENT_KEY (default: none) -
+the filepath  to the clients private key to use in mTLS communication in PEM format.
+OTEL_EXPORTER_OTLP_LOGS_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 otlploghttp // import "go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp"