@Override
public UUID replaceFacts(Facts facts) throws IOException {
// TODO: This is rather odd since we json encode something that will
// be json encoded again.
String jsonFacts = connector.toJSON(facts);
return postCommand("replace facts", 1, jsonFacts);
}
/**
* Executes the request and converts the result into an object of the desired <code>type</code>.
* If the request results in a {@link HttpStatus#SC_NOT_FOUND}, then this method will return
* <code>null</code>.
*
* @param uriStr The relative path to the endpoint
* @param params Parameters to pass in the request
* @param type The expected return type
* @return The response or <code>null</code> in case no data was found
* @throws IOException
*/
protected <V> V getSingletonResponse(String uriStr, Map<String, String> params, Type type)
throws IOException {
try {
return connector.get(uriStr, params, type);
} catch (HttpResponseException e) {
if (e.getStatusCode() == HttpStatus.SC_NOT_FOUND) return null;
throw e;
}
}
/**
* Executes the request and converts the result into a map of the desired <code>type</code>. If
* the request results in a {@link HttpStatus#SC_NOT_FOUND}, then this method will return an empty
* map.
*
* @param uriStr The relative path to the endpoint
* @param params Parameters to pass in the request
* @param type The expected return type (must be a generic List declaration)
* @return The response in list form or an empty list in case no data was found
* @throws IOException
*/
protected <K, V> Map<K, V> getMapResponse(String uriStr, Map<String, String> params, Type type)
throws IOException {
try {
return connector.get(uriStr, params, type);
} catch (HttpResponseException e) {
if (e.getStatusCode() == HttpStatus.SC_NOT_FOUND) return Collections.emptyMap();
throw e;
}
}
protected UUID postCommand(String command, int version, Object payload) throws IOException {
CommandObject cmdObj = new CommandObject();
cmdObj.setCommand(command);
cmdObj.setVersion(version);
cmdObj.setPayload(payload);
String json = connector.toJSON(cmdObj);
Map<String, String> params = new HashMap<String, String>();
params.put("payload", json);
try {
MessageDigest md = MessageDigest.getInstance("SHA-1");
params.put("checksum", Hex.encodeHexString(md.digest(json.getBytes(HttpConnector.UTF_8))));
} catch (NoSuchAlgorithmException e) {
throw new IllegalArgumentException(e);
}
CommandResponse response = connector.post("/commands/", params, CommandResponse.class);
return response == null ? null : UUID.fromString(response.getUuid());
}