private int parseClockSkewOffset(
org.apache.http.HttpResponse response, AmazonServiceException exception) {
Date deviceDate = new Date();
Date serverDate = null;
String serverDateStr = null;
Header[] responseDateHeader = response.getHeaders("Date");
try {
if (responseDateHeader.length == 0) {
// SQS doesn't return Date header
serverDateStr = getServerDateFromException(exception.getMessage());
serverDate = DateUtils.parseCompressedISO8601Date(serverDateStr);
} else {
serverDateStr = responseDateHeader[0].getValue();
serverDate = DateUtils.parseRFC822Date(serverDateStr);
}
} catch (RuntimeException e) {
log.warn("Unable to parse clock skew offset from response: " + serverDateStr, e);
return 0;
}
long diff = deviceDate.getTime() - serverDate.getTime();
return (int) (diff / 1000);
}
public Date unmarshall(StaxUnmarshallerContext unmarshallerContext) throws Exception {
String dateString = unmarshallerContext.readText();
if (dateString == null) return null;
try {
return dateUtils.parseIso8601Date(dateString);
} catch (ParseException e) {
log.warn("Unable to parse date '" + dateString + "': " + e.getMessage(), e);
return null;
}
}
@Override
public AttributeValue marshall(Object obj) {
@SuppressWarnings("unchecked")
Set<Date> dates = (Set<Date>) obj;
List<String> timestamps = new ArrayList<String>(dates.size());
for (Date date : dates) {
timestamps.add(DateUtils.formatISO8601Date(date));
}
return new AttributeValue().withSS(timestamps);
}
/** Fetches the credentials from the endpoint. */
private synchronized void fetchCredentials() {
if (!needsToLoadCredentials()) return;
JsonNode accessKey;
JsonNode secretKey;
JsonNode node;
JsonNode token;
try {
lastInstanceProfileCheck = new Date();
String credentialsResponse =
EC2CredentialsUtils.readResource(credentailsEndpointProvider.getCredentialsEndpoint());
node = Jackson.jsonNodeOf(credentialsResponse);
accessKey = node.get(ACCESS_KEY_ID);
secretKey = node.get(SECRET_ACCESS_KEY);
token = node.get(TOKEN);
if (null == accessKey || null == secretKey) {
throw new AmazonClientException("Unable to load credentials.");
}
if (null != token) {
credentials =
new BasicSessionCredentials(accessKey.asText(), secretKey.asText(), token.asText());
} else {
credentials = new BasicAWSCredentials(accessKey.asText(), secretKey.asText());
}
JsonNode expirationJsonNode = node.get("Expiration");
if (null != expirationJsonNode) {
/*
* TODO: The expiration string comes in a different format
* than what we deal with in other parts of the SDK, so we
* have to convert it to the ISO8601 syntax we expect.
*/
String expiration = expirationJsonNode.asText();
expiration = expiration.replaceAll("\\+0000$", "Z");
try {
credentialsExpiration = DateUtils.parseISO8601Date(expiration);
} catch (Exception ex) {
handleError("Unable to parse credentials expiration date from Amazon EC2 instance", ex);
}
}
} catch (JsonMappingException e) {
handleError("Unable to parse response returned from service endpoint", e);
} catch (IOException e) {
handleError("Unable to load credentials from service endpoint", e);
} catch (URISyntaxException e) {
handleError("Unable to load credentials from service endpoint", e);
}
}
public static String formatRfc822Date(Date date) {
return dateUtils.formatRfc822Date(date);
}
public static Date parseRfc822Date(String dateString) throws ParseException {
return dateUtils.parseRfc822Date(dateString);
}
public static String formatIso8601Date(Date date) {
return dateUtils.formatIso8601Date(date);
}
/**
* Constructs a new access policy condition that compares the current time (on the AWS servers) to
* the specified date.
*
* @param type The type of comparison to perform. For example, {@link
* DateComparisonType#DateLessThan} will cause this policy condition to evaluate to true if
* the current date is less than the date specified in the second argument.
* @param date The date to compare against.
*/
public DateCondition(DateComparisonType type, Date date) {
super.type = type.toString();
super.conditionKey = ConditionFactory.CURRENT_TIME_CONDITION_KEY;
super.values = Arrays.asList(new String[] {dateUtils.formatIso8601Date(date)});
}
