Metadata
Metadata is a JSON object that contains information about a resource. It includes the GUID of the resource, the time the resource was created, the time the resource was last updated, and links to the resource. Metadata is included in the response body of a request to retrieve a resource.
{
"labels": {
"labels": "string"
},
"annotations": {
"annotations": "string"
}
}A set of key-value pairs that describe the resource. Labels are a JSON object that contains information about a resource. They are used to tag resources with metadata that can be used to filter and group resources. Labels are included in the response body of a request to retrieve a resource. Labels are user-specified key/value pairs that are attached to API Resources. They are queryable, identifying attributes of a resource, but they do not affect the operation of CloudFoundry.
For example, an app may be assigned a label with key sensitive and possible values true or false.
Users could then find all sensitive apps with a selector for sensitive=true, resulting in a response containing only apps having the label key sensitive with a label value of true.
Labels Labels allow users to apply identifying attributes to resources that are meaningful to the user, but not the CloudFoundry system.
Examples may include (but are not limited to):
"production" : "true" or "production" : "false" "env" : "dev" or "env" : "test" or "env" : "prod" "chargeback-code" : "abc123" Label keys Label keys are made up of an (optional) prefix, and name. If a prefix is present, it is separated from the name by a /. Prefixes are dns names intended to enable namespacing of label keys.
A label key prefix must adhere to the following restrictions:
Length: 0-253 characters Allowed characters: alphanumeric ( [a-z0-9A-Z] ), -, and . DNS subdomain format (series of subdomain labels separated by .) A label key name must adhere to the following restrictions:
Length: 1-63 characters Allowed characters: alphanumeric ( [a-z0-9A-Z] ), -, _, and . Must begin and end with an alphanumeric character Label values Label values must adhere to the following restrictions:
Length: 0-63 characters Allowed characters: alphanumeric ( [a-z0-9A-Z] ), -, _, and . Must begin and end with an alphanumeric character Empty values are allowed
A set of key-value pairs that describe the resource. Annotations are a JSON object that contains information about a resource. They are used to tag resources with metadata that can be used to filter and group resources. Annotations are included in the response body of a request to retrieve a resource. Annotations are user-specified key-value pairs that are attached to API resources. They do not affect the operation of Cloud Foundry. Annotations cannot be used in filters.
When a service instance is being created, the service broker is sent the annotations of the service instance, and the space and organization in which the service instance resides. When a service instance is being updated, the service broker is sent the annotations of the space and organization in which the service instance resides. When a service binding is being created, the service broker is sent annotations of any associated app, and the space and organization in which the binding resides. Only annotations with a prefix (e.g. company.com/contacts) are sent to service brokers.
Examples may include (but are not limited to):
"contact info": "[email protected] [email protected]" "library versions": "Spring: 5.1, Redis Client: a184098. yaml parser: 38" "git-sha": "d56fe0367554ae5e878e37ed6c5b9a82f5995512" Annotation keys Annotation keys are made up of an (optional) prefix and name. If a prefix is present, it is separated from the name by a /. Prefixes are DNS names intended to enable namespacing of annotation keys.
An annotation key prefix must adhere to the following restrictions:
Length: 0-253 characters Allowed characters: a-z, A-Z, 0-9, -, and .; emojis cannot be used in keys DNS subdomain format (series of subdomain annotations separated by .) An annotation key name must adhere to the following restrictions:
Length: 1-63 characters Allowed characters: a-z, A-Z, 0-9, -, _, and .; emojis cannot be used in keys Must begin and end with an alphanumeric character Annotation values Annotation values must adhere to the following restrictions:
Length: 0-5000 unicode characters