Examples with TopologyListResponse org.apache.ranger.services.storm.client.json.model.TopologyListResponse used on opensource projects

Example 1 with TopologyListResponse

use of org.apache.ranger.services.storm.client.json.model.TopologyListResponse in project ranger by apache.

the class StormClient method getTopologyList.

public List<String> getTopologyList(final String topologyNameMatching, final List<String> stormTopologyList) {
    if (LOG.isDebugEnabled()) {
        LOG.debug("Getting Storm topology list for topologyNameMatching : " + topologyNameMatching);
    }
    PrivilegedAction<ArrayList<String>> topologyListGetter = new PrivilegedAction<ArrayList<String>>() {

        @Override
        public ArrayList<String> run() {
            if (stormUIUrl == null || stormUIUrl.trim().isEmpty()) {
                return null;
            }
            String[] stormUIUrls = stormUIUrl.trim().split("[,;]");
            if (stormUIUrls == null || stormUIUrls.length == 0) {
                return null;
            }
            Client client = Client.create();
            ClientResponse response = null;
            for (String currentUrl : stormUIUrls) {
                if (currentUrl == null || currentUrl.trim().isEmpty()) {
                    continue;
                }
                String url = currentUrl.trim() + TOPOLOGY_LIST_API_ENDPOINT;
                try {
                    response = getTopologyResponse(url, client);
                    if (response != null) {
                        if (response.getStatus() == 200) {
                            break;
                        } else {
                            response.close();
                        }
                    }
                } catch (Throwable t) {
                    String msgDesc = "Exception while getting topology list." + " URL : " + url;
                    LOG.error(msgDesc, t);
                }
            }
            ArrayList<String> lret = new ArrayList<String>();
            try {
                if (response != null) {
                    if (LOG.isDebugEnabled()) {
                        LOG.debug("getTopologyList():response.getStatus()= " + response.getStatus());
                    }
                    if (response.getStatus() == 200) {
                        String jsonString = response.getEntity(String.class);
                        Gson gson = new GsonBuilder().setPrettyPrinting().create();
                        TopologyListResponse topologyListResponse = gson.fromJson(jsonString, TopologyListResponse.class);
                        if (topologyListResponse != null) {
                            if (topologyListResponse.getTopologyList() != null) {
                                for (Topology topology : topologyListResponse.getTopologyList()) {
                                    String topologyName = topology.getName();
                                    if (stormTopologyList != null && stormTopologyList.contains(topologyName)) {
                                        continue;
                                    }
                                    if (LOG.isDebugEnabled()) {
                                        LOG.debug("getTopologyList():Found topology " + topologyName);
                                        LOG.debug("getTopologyList():topology Name=[" + topology.getName() + "], topologyNameMatching=[" + topologyNameMatching + "], existingStormTopologyList=[" + stormTopologyList + "]");
                                    }
                                    if (topologyName != null) {
                                        if (topologyNameMatching == null || topologyNameMatching.isEmpty() || FilenameUtils.wildcardMatch(topology.getName(), topologyNameMatching + "*")) {
                                            if (LOG.isDebugEnabled()) {
                                                LOG.debug("getTopologyList():Adding topology " + topologyName);
                                            }
                                            lret.add(topologyName);
                                        }
                                    }
                                }
                            }
                        }
                    }
                } else {
                    String msgDesc = "Unable to get a valid response for " + "expected mime type : [" + EXPECTED_MIME_TYPE + "] URL : " + stormUIUrl + " - got null response.";
                    LOG.error(msgDesc);
                    HadoopException hdpException = new HadoopException(msgDesc);
                    hdpException.generateResponseDataMap(false, msgDesc, msgDesc + errMessage, null, null);
                    throw hdpException;
                }
            } catch (HadoopException he) {
                throw he;
            } catch (Throwable t) {
                String msgDesc = "Exception while getting Storm TopologyList." + " URL : " + stormUIUrl;
                HadoopException hdpException = new HadoopException(msgDesc, t);
                LOG.error(msgDesc, t);
                hdpException.generateResponseDataMap(false, BaseClient.getMessage(t), msgDesc + errMessage, null, null);
                throw hdpException;
            } finally {
                if (response != null) {
                    response.close();
                }
                if (client != null) {
                    client.destroy();
                }
            }
            return lret;
        }

        private ClientResponse getTopologyResponse(String url, Client client) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("getTopologyResponse():calling " + url);
            }
            WebResource webResource = client.resource(url);
            ClientResponse response = webResource.accept(EXPECTED_MIME_TYPE).get(ClientResponse.class);
            if (response != null) {
                if (LOG.isDebugEnabled()) {
                    LOG.debug("getTopologyResponse():response.getStatus()= " + response.getStatus());
                }
                if (response.getStatus() != 200) {
                    LOG.info("getTopologyResponse():response.getStatus()= " + response.getStatus() + " for URL " + url + ", failed to get topology list");
                    String jsonString = response.getEntity(String.class);
                    LOG.info(jsonString);
                }
            }
            return response;
        }
    };
    List<String> ret = null;
    try {
        ret = executeUnderKerberos(this.userName, this.password, this.lookupPrincipal, this.lookupKeytab, this.nameRules, topologyListGetter);
    } catch (IOException e) {
        LOG.error("Unable to get Topology list from [" + stormUIUrl + "]", e);
    }
    return ret;
}