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/*
* Copyright 2019, 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.
*/
/**
* API for resource information population.
*
* The resources library primarily defines a type "Resource" that captures information about the
* entity for which stats or traces are recorded. For example, metrics exposed by a Kubernetes
* container can be linked to a resource that specifies the cluster, namespace, pod, and container
* name.
*
*
One environment variables is used to populate resource information:
*
*
* - OTEL_RESOURCE_ATTRIBUTES: A comma-separated list of attributes describing the source in
* more detail, e.g. “key1=val1,key2=val2”. The allowed character set is appropriately
* constrained.
*
*
* Attribute keys, and attribute values MUST contain only printable ASCII (codes between 32 and
* 126, inclusive) and less than 256 characters. Type and attribute keys MUST have a length greater
* than zero. They SHOULD start with a domain name and separate hierarchies with / characters, e.g.
* k8s.io/namespace/name.
*/
package io.opentelemetry.sdk.resources;