io.micronaut.discovery.cloud.gcp

Class GoogleComputeInstanceMetadataResolver

java.lang.Object

io.micronaut.discovery.cloud.gcp.GoogleComputeInstanceMetadataResolver

All Implemented Interfaces:

ComputeInstanceMetadataResolver

@Singleton
 @Requires(env="gcp")
public class GoogleComputeInstanceMetadataResolver
extends Object
implements ComputeInstanceMetadataResolver

Resolves ComputeInstanceMetadata for Google Cloud Platform.

Since:

1.0

Author:

rvanderwerf, Graeme Rocher

Field Summary

Fields

Modifier and Type	Field and Description
static String	HEADER_METADATA_FLAVOR Constant for Metadata flavor.

Constructor Summary

Constructors

Constructor and Description
GoogleComputeInstanceMetadataResolver() Construct with default settings.
GoogleComputeInstanceMetadataResolver(com.fasterxml.jackson.databind.ObjectMapper objectMapper, GoogleComputeMetadataConfiguration configuration)

Method Summary

Modifier and Type	Method and Description
protected com.fasterxml.jackson.databind.JsonNode	readGcMetadataUrl(URL url, int connectionTimeoutMs, int readTimeoutMs) Get instance Metadata JSON.
Optional<ComputeInstanceMetadata>	resolve(Environment environment) Resolves ComputeInstanceMetadata for the current environment if possible.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HEADER_METADATA_FLAVOR

public static final String HEADER_METADATA_FLAVOR

Constant for Metadata flavor.

See Also:

Constant Field Values

Constructor Detail

GoogleComputeInstanceMetadataResolver

@Inject
public GoogleComputeInstanceMetadataResolver(com.fasterxml.jackson.databind.ObjectMapper objectMapper,
                                                     GoogleComputeMetadataConfiguration configuration)

Parameters:

objectMapper - To read and write JSON

configuration - The configuration for computing Google Metadata

GoogleComputeInstanceMetadataResolver

public GoogleComputeInstanceMetadataResolver()

Construct with default settings.

Method Detail

resolve

public Optional<ComputeInstanceMetadata> resolve(Environment environment)

Description copied from interface: ComputeInstanceMetadataResolver

Resolves ComputeInstanceMetadata for the current environment if possible.

Specified by:

resolve in interface ComputeInstanceMetadataResolver

Parameters:

environment - The environment

Returns:

The ComputeInstanceMetadata

readGcMetadataUrl

protected com.fasterxml.jackson.databind.JsonNode readGcMetadataUrl(URL url,
                                                                    int connectionTimeoutMs,
                                                                    int readTimeoutMs)
                                                             throws IOException

Get instance Metadata JSON.

Parameters:

url - The metadata URL

connectionTimeoutMs - connection timeout in millis

readTimeoutMs - read timeout in millis

Returns:

The Metadata JSON

Throws:

IOException - Failed or interrupted I/O operations while reading from input stream.