/** Retrieves a key. Returns null if not found. */
public EtcdResult get(String key) throws EtcdClientException {
URI uri = buildKeyUri("v1/keys", key, "");
HttpGet request = new HttpGet(uri);
EtcdResult result = syncExecute(request, 100);
if (result.isError()) {
if (result.errorCode == 100) {
return null;
}
}
return result;
}
private EtcdResult jsonToEtcdResult(JsonResponse response, int... expectedErrorCodes)
throws EtcdClientException {
if (response == null || response.json == null) {
return null;
}
EtcdResult result = parseEtcdResult(response.json);
if (result.isError()) {
if (!contains(expectedErrorCodes, result.errorCode)) {
throw new EtcdClientException(result.message, result);
}
}
return result;
}