com.qcloud.cos.auth.InstanceMetadataCredentialsEndpointProvider Maven / Gradle / Ivy
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A single bundled dependency that includes all service and dependent JARs with third-party libraries
relocated to different namespaces.
package com.qcloud.cos.auth;
import com.qcloud.cos.exception.CosClientException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
public class InstanceMetadataCredentialsEndpointProvider extends CredentialsEndpointProvider {
private static final Logger LOG = LoggerFactory.getLogger(InstanceMetadataCredentialsEndpointProvider.class);
public enum Instance {
CPM("http://bm.metadata.tencentyun.com", "/meta-data/cam/security-credentials"),
CVM("http://metadata.tencentyun.com", "/meta-data/cam/security-credentials"),
EMR("http://localhost:2888", "/accesskey"),
EMRV2("http://metaserver.tencentemr.com:9998", "/accesskey");
final String METADATA_SERVICE_URL;
final String METADATA_CREDENTIALS_RESOURCE;
Instance(String METADATA_SERVICE_URL, String METADATA_CREDENTIALS_RESOURCE) {
this.METADATA_SERVICE_URL = METADATA_SERVICE_URL;
this.METADATA_CREDENTIALS_RESOURCE = METADATA_CREDENTIALS_RESOURCE;
}
}
private final Instance instance;
private final String roleName;
public InstanceMetadataCredentialsEndpointProvider(Instance instance) {
this(instance, null);
}
public InstanceMetadataCredentialsEndpointProvider(Instance instance, String roleName) {
this.instance = instance;
this.roleName = roleName;
}
@Override
public URI getCredentialsEndpoint() throws URISyntaxException, IOException {
if (null != this.roleName && !this.roleName.isEmpty()) {
return new URI(this.instance.METADATA_SERVICE_URL + this.instance.METADATA_CREDENTIALS_RESOURCE + "/" + this.roleName);
}
// Try to get a valid role.
LOG.debug("The role name is not specified. Trying to get a valid role name from the instance.");
String roles =
InstanceCredentialsUtils.getInstance().readResource(
new URI(this.instance.METADATA_SERVICE_URL + this.instance.METADATA_CREDENTIALS_RESOURCE));
String[] roleList = roles.trim().split("\n");
if (0 == roleList.length) {
throw new CosClientException("Unable to load the credentials path. No valid cam role was found.");
}
LOG.info("Use the role [{}] to obtain the credentials.", roleList[0]);
return new URI(this.instance.METADATA_SERVICE_URL + this.instance.METADATA_CREDENTIALS_RESOURCE + "/" + roleList[0]);
}
}
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