Example usage for com.google.gson JsonElement getAsString

List of usage examples for com.google.gson JsonElement getAsString

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Introduction

In this page you can find the example usage for com.google.gson JsonElement getAsString.

Prototype

public String getAsString()

Source Link

Document

convenience method to get this element as a string value.

Usage

From source file:com.ibm.mqlight.api.impl.endpoint.BluemixEndpointService.java

License:Apache License

protected void doHttpLookup(final String httpUri, final EndpointPromise future) {
    final String methodName = "doHttpLookup";
    logger.entry(this, methodName, httpUri, future);

    synchronized (this) {
        if (executor == null) {
            executor = new ThreadPoolExecutor(THREAD_POOL_CORE_THREADS, THREAD_POOL_MAX_THREADS,
                    THREAD_POOL_KEEP_ALIVE_SECONDS, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>(),
                    new BluemixThreadFactory());
        }//from www  . j av  a  2s . c  om
    }

    executor.execute(new Runnable() {
        public void run() {
            final String methodName = "run";
            logger.entry(this, methodName);

            try {
                String serviceJson = hitUri(httpUri);

                JsonParser parser = new JsonParser();
                JsonObject root = parser.parse(serviceJson).getAsJsonObject();
                JsonArray services = root.get("service").getAsJsonArray();
                Endpoint endpoint = null;
                synchronized (this) {
                    state.endpoints = new LinkedList<>();
                    for (JsonElement serviceElement : services) {
                        String uri = serviceElement.getAsString();
                        state.endpoints.add(new EndpointImpl(uri, state.user, state.password));
                    }

                    if (state.endpoints.isEmpty()) {
                        state.endpoints = null;
                        state.nextEndpointIndex = 0;
                    } else {
                        endpoint = state.endpoints.get(0);
                        state.nextEndpointIndex = 1;
                    }
                }

                if (endpoint == null) {
                    doRetry(future);
                } else {
                    future.setSuccess(endpoint);
                }
            } catch (IOException ioException) {
                logger.data(this, methodName, "will retry due to java.io.IOException exception",
                        ioException.getLocalizedMessage());
                // Retry later...
                doRetry(future);
            } catch (JsonParseException parseException) {
                final ClientException exception = new ClientException(
                        "Could not parse the JSON returned by the IBM MQ Light Bluemix lookup service.  See linked exception for more information",
                        parseException);
                logger.data(this, methodName, exception);
                future.setFailure(exception);
            } catch (IllegalArgumentException iae) {
                final ClientException exception = new ClientException(
                        "Endpoint information returned by IBM MQ Light Bluemix lookup service was not valid.  See linked exception for more information",
                        iae);
                logger.data(this, methodName, exception);
                future.setFailure(exception);
            }

            logger.exit(this, methodName);
        }
    });

    logger.exit(this, methodName);
}

From source file:com.ibm.streamsx.rest.StreamingAnalyticsConnectionV2.java

License:Open Source License

/**
 * Cancels a job that has been submitted to IBM Streaming Analytics service
 *
 * @param instanceId//from w w w .  j a  va2s.  c  om
 *            string indicating the instance id of the job
 * @param jobId
 *            string indicating the job id to be canceled
 * @return boolean indicating
 *         <ul>
 *         <li>true - if job is cancelled</li>
 *         <li>false - if the job still exists</li>
 *         </ul>
 * @throws IOException
 */
@Override
boolean cancelJob(Instance instance, String jobId) throws IOException {
    if (null == jobsUrl) {
        String restUrl = jstring(credentials, "v2_rest_url");
        JsonObject response = StreamsRestUtils.getGsonResponse(executor, getAuthorization(), restUrl);
        JsonElement element = response.get("jobs");
        if (null != element) {
            jobsUrl = element.getAsString();
        } else {
            throw new RESTException("Unable to get jobs URL");
        }
    }

    return delete(jobsUrl + "/" + jobId);
}

From source file:com.ibm.streamsx.rest.StreamsRestUtils.java

License:Open Source License

/**
 * Get a member that is expected to exist and be non-null.
 * @param json The JSON object/* w  w w .j av a  2 s.com*/
 * @param member The member name in the object.
 * @return The string value of the member.
 * @throws IllegalStateException if the member does not exist or is null.
 */
static String getRequiredMember(JsonObject json, String member) throws IllegalStateException {
    JsonElement element = json.get(member);
    if (null == element || element.isJsonNull()) {
        throw new IllegalStateException("JSON missing required member " + member);
    }
    return element.getAsString();
}

From source file:com.ibm.streamsx.topology.generator.spl.GraphUtilities.java

License:Open Source License

static void removeOperators(Collection<JsonObject> operators, JsonObject graph) {
    for (JsonObject iso : operators) {

        // Get parents and children of operator
        Set<JsonObject> operatorParents = getUpstream(iso, graph);
        Set<JsonObject> operatorChildren = getDownstream(iso, graph);

        JsonArray operatorOutputs = array(iso, "outputs");

        // Get the output name of the operator
        String operatorOutName = "";
        if (operatorOutputs != null) {
            JsonObject operatorFirstOutput = operatorOutputs.get(0).getAsJsonObject();
            if (operatorFirstOutput != null) {
                operatorOutName = jstring(operatorFirstOutput, "name");
            }/* w  w w. j  a va 2 s. co m*/
        }

        // Also get input names
        List<String> operatorInNames = new ArrayList<>();
        inputs(iso, input -> operatorInNames.add(jstring(input, "name")));

        // Respectively, the names of the child and parent input and
        // output ports connected to the operator.
        List<String> childInputPortNames = new ArrayList<>();
        List<String> parentOutputPortNames = new ArrayList<>();

        // References to the list of connections for the parent and child
        // output and input ports that are connected to the $isolate$
        // operator.
        List<JsonArray> childConnections = new ArrayList<>();
        List<JsonArray> parentConnections = new ArrayList<>();

        // Get names of children's input ports that are connected to the
        // operator;
        for (JsonObject child : operatorChildren) {
            JsonArray inputs = child.get("inputs").getAsJsonArray();
            for (JsonElement inputObj : inputs) {
                JsonObject input = inputObj.getAsJsonObject();
                JsonArray connections = input.get("connections").getAsJsonArray();
                for (JsonElement connectionObj : connections) {
                    String connection = connectionObj.getAsString();
                    if (connection.equals(operatorOutName)) {
                        childInputPortNames.add(jstring(input, "name"));
                        childConnections.add(connections);
                        connections.remove(connectionObj);
                        break;
                    }
                }
            }
        }

        // Get names of parent's output ports that are connected to the
        // $Isolate$ operator;
        for (JsonObject parent : operatorParents) {
            JsonArray outputs = parent.get("outputs").getAsJsonArray();
            for (JsonElement outputObj : outputs) {
                JsonObject output = outputObj.getAsJsonObject();
                JsonArray connections = output.get("connections").getAsJsonArray();
                for (JsonElement connectionObj : connections) {
                    String connection = connectionObj.getAsString();
                    if (operatorInNames.contains(connection)) {
                        parentOutputPortNames.add(jstring(output, "name"));
                        parentConnections.add(connections);
                        connections.remove(connectionObj);
                        break;
                    }
                }
            }
        }

        // Connect child to parents
        for (JsonArray childConnection : childConnections) {
            for (String name : parentOutputPortNames)
                childConnection.add(new JsonPrimitive(name));
        }

        // Connect parent to children
        for (JsonArray parentConnection : parentConnections) {
            for (String name : childInputPortNames)
                parentConnection.add(new JsonPrimitive(name));
        }
        JsonArray ops = graph.get("operators").getAsJsonArray();
        ops.remove(iso);
    }
}

From source file:com.ibm.streamsx.topology.generator.spl.GraphUtilities.java

License:Open Source License

static void insertOperatorBetweenPorts(JsonObject input, JsonObject output, JsonObject op) {
    String oportName = jstring(output, "name");
    String iportName = jstring(input, "name");

    JsonObject opInput = op.get("inputs").getAsJsonArray().get(0).getAsJsonObject();
    JsonObject opOutput = op.get("outputs").getAsJsonArray().get(0).getAsJsonObject();

    String opIportName = jstring(opInput, "name");
    String opOportName = jstring(opOutput, "name");

    // Attach op in inputs and outputs
    JsonArray opInputConns = opInput.get("connections").getAsJsonArray();
    JsonArray opOutputConns = opOutput.get("connections").getAsJsonArray();
    boolean add = true;
    for (JsonElement conn : opInputConns)
        if (conn.getAsString().equals(oportName)) {
            add = false;//from   w ww.j a v a  2s. c  o m
            break;
        }
    if (add)
        opInputConns.add(new JsonPrimitive(oportName));

    add = true;
    for (JsonElement conn : opOutputConns)
        if (conn.getAsString().equals(iportName)) {
            add = false;
            break;
        }
    opOutputConns.add(new JsonPrimitive(iportName));

    JsonArray outputConns = output.get("connections").getAsJsonArray();
    JsonArray inputConns = input.get("connections").getAsJsonArray();

    for (int i = 0; i < outputConns.size(); i++) {
        if (outputConns.get(i).getAsString().equals(iportName))
            outputConns.set(i, new JsonPrimitive(opIportName));
    }

    for (int i = 0; i < inputConns.size(); i++) {
        if (inputConns.get(i).getAsString().equals(oportName))
            inputConns.set(i, new JsonPrimitive(opOportName));
    }
}

From source file:com.ibm.streamsx.topology.generator.spl.OperatorGenerator.java

License:Open Source License

private void parallelAnnotation(JsonObject op, StringBuilder sb) {
    boolean parallel = jboolean(op, "parallelOperator");

    if (parallel) {
        boolean partitioned = jboolean(op, "partitioned");
        JsonObject parallelInfo = op.get("parallelInfo").getAsJsonObject();

        sb.append("@parallel(width=");
        JsonElement width = parallelInfo.get(OpProperties.WIDTH);
        if (width.isJsonPrimitive()) {
            sb.append(width.getAsString());
        } else {//from  w w w.  j a  va  2  s .  co m
            splValueSupportingSubmission(width.getAsJsonObject(), sb);
        }

        if (partitioned) {
            sb.append(", partitionBy=[");
            JsonArray partitionedPorts = array(parallelInfo, "partitionedPorts");
            for (int i = 0; i < partitionedPorts.size(); i++) {
                JsonObject partitionedPort = partitionedPorts.get(i).getAsJsonObject();

                if (i > 0)
                    sb.append(", ");

                sb.append("{port=");
                sb.append(getSPLCompatibleName(GsonUtilities.jstring(partitionedPort, "name")));
                sb.append(", attributes=[");
                JsonArray partitionKeys = partitionedPort.get("partitionedKeys").getAsJsonArray();
                for (int j = 0; j < partitionKeys.size(); j++) {
                    if (j != 0)
                        sb.append(", ");
                    sb.append(partitionKeys.get(j).getAsString());
                }
                sb.append("]}");
            }

            sb.append("]");
        }

        JsonArray broadcastPorts = parallelInfo.get("broadcastPorts").getAsJsonArray();
        if (broadcastPorts.size() > 0) {
            sb.append(", broadcast=[");
            for (int i = 0; i < broadcastPorts.size(); i++) {
                if (i != 0)
                    sb.append(", ");
                sb.append(getSPLCompatibleName(broadcastPorts.get(i).getAsString()));
            }
            sb.append("]");

        }

        sb.append(")");
        sb.append("\n");
    }
}

From source file:com.ibm.streamsx.topology.generator.spl.OperatorGenerator.java

License:Open Source License

private void splValueSupportingSubmission(JsonObject value, StringBuilder sb) {

    JsonElement type = value.get("type");
    if (value.has("type") && TYPE_SUBMISSION_PARAMETER.equals(type.getAsString())) {
        value = stvHelper.getSPLExpression(value);
    }//from   ww w .j  a v a  2 s . c om

    SPLGenerator.value(sb, value);
}

From source file:com.ibm.streamsx.topology.generator.spl.OperatorGenerator.java

License:Open Source License

/**
 * Gets or creates a host pool at the graphConfig level corresponding to the
 * unique set of tags.//from   w  w w. j a  va2s . com
 */
private static String getHostPoolName(JsonObject graphConfig, Set<String> uniqueResourceTags) {
    JsonArray hostPools = array(graphConfig, "__spl_hostPools");
    if (hostPools == null) {
        graphConfig.add("__spl_hostPools", hostPools = new JsonArray());
    }

    // Look for a host pool matching this one
    for (JsonElement hpe : hostPools) {
        JsonObject hostPoolDef = hpe.getAsJsonObject();
        JsonArray rta = hostPoolDef.get("resourceTags").getAsJsonArray();
        Set<String> poolResourceTags = new HashSet<>();
        for (JsonElement tage : rta)
            poolResourceTags.add(tage.getAsString());
        if (uniqueResourceTags.equals(poolResourceTags)) {
            return jstring(hostPoolDef, "name");
        }
    }

    JsonObject hostPoolDef = new JsonObject();
    String hostPool;
    hostPoolDef.addProperty("name", hostPool = "__jaaHostPool" + hostPools.size());
    JsonArray rta = new JsonArray();
    for (String tag : uniqueResourceTags)
        rta.add(new JsonPrimitive(tag));
    hostPoolDef.add("resourceTags", rta);
    hostPools.add(hostPoolDef);
    return hostPool;
}

From source file:com.ibm.streamsx.topology.generator.spl.SPLGenerator.java

License:Open Source License

/**
 * When we create a composite, operators need to create connections with the composite's output port.
 * @param graph//  w w  w  .  j a  v a2 s . c  o m
 * @param startsEndsAndOperators
 * @param opDefinition
 */
private void fixCompositeOutputNaming(JsonObject graph, List<List<JsonObject>> startsEndsAndOperators,
        JsonObject opDefinition, JsonObject opInvocation) {
    // We iterate like this because we need the index into the operatorDefinition's inputNames list.
    for (int[] i = { 0 }; i[0] < startsEndsAndOperators.get(1).size(); i[0]++) {
        JsonObject end = startsEndsAndOperators.get(1).get(i[0]);

        // Region markers like $Parallel$ only have one input and output
        String inputPortName = GsonUtilities
                .jstring(end.get("inputs").getAsJsonArray().get(0).getAsJsonObject(), "name");

        for (JsonObject parent : getUpstream(end, graph)) {
            String endType = jstring(array(end, "outputs").get(0).getAsJsonObject(), "type");
            array(opInvocation, "outputs").get(i[0]).getAsJsonObject().addProperty("type", endType);

            GraphUtilities.outputs(parent, output -> {
                JsonArray conns = array(output, "connections");
                for (JsonElement conn : conns) {
                    String sconn = conn.getAsString();
                    if (sconn.equals(inputPortName)) {
                        output.addProperty("name",
                                GsonUtilities.array(opDefinition, "outputNames").get(i[0]).getAsString());
                    }
                }
            });
        }

    }
}

From source file:com.ibm.streamsx.topology.generator.spl.SPLGenerator.java

License:Open Source License

void generateComposite(JsonObject graphConfig, JsonObject graph, StringBuilder compBuilder) throws IOException {
    boolean isPublic = jboolean(graph, "public");
    String kind = jstring(graph, KIND);
    kind = getSPLCompatibleName(kind);/*from  w  ww  . j  a v a  2s.c o  m*/
    if (isPublic)
        compBuilder.append("public ");

    compBuilder.append("composite ");

    compBuilder.append(kind);
    if (jboolean(graph, "generated")) {
        JsonArray inputNames = array(graph, "inputNames");
        JsonArray outputNames = array(graph, "outputNames");
        compBuilder.append("(");
        if (inputNames != null && inputNames.size() > 0) {
            compBuilder.append("input ");
            boolean first = true;
            for (JsonElement inputName : inputNames) {
                if (!first)
                    compBuilder.append(",");
                String strInputName = getSPLCompatibleName(inputName.getAsString());
                compBuilder.append(strInputName);
                first = false;
            }

        }

        if (outputNames != null && outputNames.size() > 0) {
            if (inputNames != null && inputNames.size() > 0)
                compBuilder.append(";");
            compBuilder.append("output ");
            boolean first = true;
            for (JsonElement outputName : outputNames) {
                if (!first)
                    compBuilder.append(",");
                String strOutputName = getSPLCompatibleName(outputName.getAsString());
                compBuilder.append(strOutputName);
                first = false;
            }

        }

        compBuilder.append(")");

    }
    compBuilder.append("\n{\n");

    generateCompParams(graph, compBuilder);

    compBuilder.append("graph\n");
    operators(graphConfig, graph, compBuilder);

    generateCompConfig(graph, graphConfig, compBuilder);

    compBuilder.append("}\n");
}