KubernetesObjectValue

class aws_cdk.aws_eks.KubernetesObjectValue(scope, id, *, cluster, json_path, object_name, object_type, object_namespace=None, timeout=None)

Bases: Construct

Represents a value of a specific object deployed in the cluster.

Use this to fetch any information available by the kubectl get command.

ExampleMetadata:: infused

Example:

# cluster: eks.Cluster

# query the load balancer address
my_service_address = eks.KubernetesObjectValue(self, "LoadBalancerAttribute",
    cluster=cluster,
    object_type="service",
    object_name="my-service",
    json_path=".status.loadBalancer.ingress[0].hostname"
)

# pass the address to a lambda function
proxy_function = lambda_.Function(self, "ProxyFunction",
    handler="index.handler",
    code=lambda_.Code.from_inline("my-code"),
    runtime=lambda_.Runtime.NODEJS_LATEST,
    environment={
        "my_service_address": my_service_address.value
    }
)

Parameters:

scope (Construct)
id (str)
cluster (ICluster) – The EKS cluster to fetch attributes from. [disable-awslint:ref-via-interface]
json_path (str) – JSONPath to the specific value.
object_name (str) – The name of the object to query.
object_type (str) – The object type to query. (e.g ‘service’, ‘pod’…)
object_namespace (Optional[str]) – The namespace the object belongs to. Default: ‘default’
timeout (Optional[Duration]) – Timeout for waiting on a value. Default: Duration.minutes(5)

Methods

to_string()

Returns a string representation of this construct.

Return type:: str

Attributes

RESOURCE_TYPE = 'Custom::AWSCDK-EKS-KubernetesObjectValue'

node: The tree node.

value: The value as a string token.

Static Methods

classmethod is_construct(x)

Checks if x is a construct.

Use this method instead of instanceof to properly detect Construct instances, even when the construct library is symlinked.

Explanation: in JavaScript, multiple copies of the constructs library on disk are seen as independent, completely different libraries. As a consequence, the class Construct in each copy of the constructs library is seen as a different class, and an instance of one class will not test as instanceof the other class. npm install will not create installations like this, but users may manually symlink construct libraries together or use a monorepo tool: in those cases, multiple copies of the constructs library can be accidentally installed, and instanceof will behave unpredictably. It is safest to avoid using instanceof, and using this type-testing method instead.

Parameters:: x (Any) – Any object.
Return type:: bool
Returns:: true if x is an object created from a class which extends Construct.