public Credentials unmarshall(StaxUnmarshallerContext context) throws Exception {
Credentials credentials = new Credentials();
int originalDepth = context.getCurrentDepth();
int targetDepth = originalDepth + 1;
if (context.isStartOfDocument()) targetDepth += 2;
while (true) {
XMLEvent xmlEvent = context.nextEvent();
if (xmlEvent.isEndDocument()) return credentials;
if (xmlEvent.isAttribute() || xmlEvent.isStartElement()) {
if (context.testExpression("AccessKeyId", targetDepth)) {
credentials.setAccessKeyId(StringStaxUnmarshaller.getInstance().unmarshall(context));
continue;
}
if (context.testExpression("SecretAccessKey", targetDepth)) {
credentials.setSecretAccessKey(StringStaxUnmarshaller.getInstance().unmarshall(context));
continue;
}
if (context.testExpression("SessionToken", targetDepth)) {
credentials.setSessionToken(StringStaxUnmarshaller.getInstance().unmarshall(context));
continue;
}
if (context.testExpression("Expiration", targetDepth)) {
credentials.setExpiration(DateStaxUnmarshaller.getInstance().unmarshall(context));
continue;
}
} else if (xmlEvent.isEndElement()) {
if (context.getCurrentDepth() < originalDepth) {
return credentials;
}
}
}
}
/**
* Starts a new session by sending a request to the AWS Security Token Service (STS) with the long
* lived AWS credentials. This class then vends the short lived session credentials sent back from
* STS.
*/
private void startSession() {
AssumeRoleWithWebIdentityResult sessionTokenResult =
securityTokenService.assumeRoleWithWebIdentity(
new AssumeRoleWithWebIdentityRequest()
.withWebIdentityToken(wifToken)
.withProviderId(wifProvider)
.withRoleArn(roleArn)
.withRoleSessionName("ProviderSession")
.withDurationSeconds(this.sessionDuration));
Credentials stsCredentials = sessionTokenResult.getCredentials();
subjectFromWIF = sessionTokenResult.getSubjectFromWebIdentityToken();
sessionCredentials =
new BasicSessionCredentials(
stsCredentials.getAccessKeyId(),
stsCredentials.getSecretAccessKey(),
stsCredentials.getSessionToken());
sessionCredentialsExpiration = stsCredentials.getExpiration();
}
