Example usage for com.google.gson JsonObject JsonObject

List of usage examples for com.google.gson JsonObject JsonObject

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

Prototype

JsonObject

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From source file:co.cask.cdap.etl.spark.batch.OutputFormatProviderTypeAdapter.java

License:Apache License

@Override
public JsonElement serialize(OutputFormatProvider src, Type typeOfSrc, JsonSerializationContext context) {
    JsonObject jsonObj = new JsonObject();
    jsonObj.addProperty("outputFormatClass", src.getOutputFormatClassName());
    jsonObj.add("outputFormatConfig", context.serialize(src.getOutputFormatConfiguration()));
    return jsonObj;
}

From source file:co.cask.cdap.explore.executor.AbstractExploreMetadataHttpHandler.java

License:Apache License

protected void handleResponseEndpointExecution(HttpRequest request, HttpResponder responder,
        final EndpointCoreExecution<QueryHandle> execution) throws ExploreException, IOException {
    genericEndpointExecution(request, responder, new EndpointCoreExecution<Void>() {
        @Override//from w w w . j a v a 2  s  .  co m
        public Void execute(HttpRequest request, HttpResponder responder)
                throws IllegalArgumentException, SQLException, ExploreException, IOException {
            QueryHandle handle = execution.execute(request, responder);
            JsonObject json = new JsonObject();
            json.addProperty("handle", handle.getHandle());
            responder.sendJson(HttpResponseStatus.OK, json);
            return null;
        }
    });
}

From source file:co.cask.cdap.explore.executor.ExploreExecutorHttpHandler.java

License:Apache License

@POST
@Path("streams/{stream}/tables/{table}/enable")
public void enableStream(HttpRequest request, HttpResponder responder,
        @PathParam("namespace-id") String namespaceId, @PathParam("stream") String streamName,
        @PathParam("table") String tableName) throws Exception {
    Id.Stream streamId = Id.Stream.from(namespaceId, streamName);
    try (Reader reader = new InputStreamReader(new ChannelBufferInputStream(request.getContent()))) {
        FormatSpecification format = GSON.fromJson(reader, FormatSpecification.class);
        if (format == null) {
            throw new BadRequestException("Expected format in the body");
        }/*  w  w w.ja v  a2  s  .  co  m*/
        QueryHandle handle = exploreTableManager.enableStream(tableName, streamId, format);
        JsonObject json = new JsonObject();
        json.addProperty("handle", handle.getHandle());
        responder.sendJson(HttpResponseStatus.OK, json);
    } catch (UnsupportedTypeException e) {
        LOG.error("Exception while generating create statement for stream {}", streamName, e);
        responder.sendString(HttpResponseStatus.BAD_REQUEST, e.getMessage());
    }
}

From source file:co.cask.cdap.explore.executor.ExploreExecutorHttpHandler.java

License:Apache License

@POST
@Path("streams/{stream}/tables/{table}/disable")
public void disableStream(HttpRequest request, HttpResponder responder,
        @PathParam("namespace-id") String namespaceId, @PathParam("stream") String streamName,
        @PathParam("table") String tableName) {

    Id.Stream streamId = Id.Stream.from(namespaceId, streamName);
    try {/*from w  w w  .j ava2s .  com*/
        // throws io exception if there is no stream
        streamAdmin.getConfig(streamId);
    } catch (IOException e) {
        LOG.debug("Could not find stream {} to disable explore on.", streamName, e);
        responder.sendString(HttpResponseStatus.NOT_FOUND, "Could not find stream " + streamName);
        return;
    }

    try {
        QueryHandle handle = exploreTableManager.disableStream(tableName, streamId);
        JsonObject json = new JsonObject();
        json.addProperty("handle", handle.getHandle());
        responder.sendJson(HttpResponseStatus.OK, json);
    } catch (Throwable t) {
        LOG.error("Got exception disabling exploration for stream {}", streamId, t);
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR, t.getMessage());
    }
}

From source file:co.cask.cdap.explore.executor.ExploreExecutorHttpHandler.java

License:Apache License

/**
 * Enable ad-hoc exploration of a dataset instance.
 *//*  w  ww  .jav  a2 s  .c o m*/
@POST
@Path("datasets/{dataset}/enable")
public void enableDataset(HttpRequest request, HttpResponder responder,
        @PathParam("namespace-id") String namespaceId, @PathParam("dataset") String datasetName) {
    Id.DatasetInstance datasetID = Id.DatasetInstance.from(namespaceId, datasetName);
    DatasetSpecification datasetSpec;
    try {
        datasetSpec = datasetFramework.getDatasetSpec(datasetID);
        if (datasetSpec == null) {
            responder.sendString(HttpResponseStatus.NOT_FOUND, "Cannot load dataset " + datasetID);
            return;
        }
    } catch (DatasetManagementException e) {
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR,
                "Error getting spec for dataset " + datasetID);
        return;
    }

    try {
        QueryHandle handle = exploreTableManager.enableDataset(datasetID, datasetSpec);
        JsonObject json = new JsonObject();
        json.addProperty("handle", handle.getHandle());
        responder.sendJson(HttpResponseStatus.OK, json);
    } catch (IllegalArgumentException e) {
        responder.sendString(HttpResponseStatus.BAD_REQUEST, e.getMessage());
    } catch (ExploreException e) {
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR,
                "Error enabling explore on dataset " + datasetID);
    } catch (SQLException e) {
        responder.sendString(HttpResponseStatus.BAD_REQUEST,
                "SQL exception while trying to enable explore on dataset " + datasetID);
    } catch (UnsupportedTypeException e) {
        responder.sendString(HttpResponseStatus.BAD_REQUEST,
                "Schema for dataset " + datasetID + " is not supported for exploration: " + e.getMessage());
    } catch (Throwable e) {
        LOG.error("Got exception:", e);
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR, e.getMessage());
    }
}

From source file:co.cask.cdap.explore.executor.ExploreExecutorHttpHandler.java

License:Apache License

/**
 * Disable ad-hoc exploration of a dataset instance.
 *///from   w w  w. j av a  2s. c o m
@POST
@Path("datasets/{dataset}/disable")
public void disableDataset(HttpRequest request, HttpResponder responder,
        @PathParam("namespace-id") String namespaceId, @PathParam("dataset") String datasetName) {

    LOG.debug("Disabling explore for dataset instance {}", datasetName);
    Id.DatasetInstance datasetID = Id.DatasetInstance.from(namespaceId, datasetName);
    DatasetSpecification spec;
    try {
        spec = datasetFramework.getDatasetSpec(datasetID);
        if (spec == null) {
            responder.sendString(HttpResponseStatus.NOT_FOUND, "Cannot load dataset " + datasetID);
            return;
        }
    } catch (DatasetManagementException e) {
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR,
                "Error getting spec for dataset " + datasetID);
        return;
    }

    try {
        QueryHandle handle = exploreTableManager.disableDataset(datasetID, spec);
        JsonObject json = new JsonObject();
        json.addProperty("handle", handle.getHandle());
        responder.sendJson(HttpResponseStatus.OK, json);
    } catch (Throwable e) {
        LOG.error("Got exception while trying to disable explore on dataset {}", datasetID, e);
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR, e.getMessage());
    }
}

From source file:co.cask.cdap.explore.executor.ExploreExecutorHttpHandler.java

License:Apache License

@POST
@Path("datasets/{dataset}/partitions")
public void addPartition(HttpRequest request, HttpResponder responder,
        @PathParam("namespace-id") String namespaceId, @PathParam("dataset") String datasetName) {
    Id.DatasetInstance datasetInstanceId = Id.DatasetInstance.from(namespaceId, datasetName);
    Dataset dataset;/*from w ww  .  j a v a 2  s  .c o m*/
    try (SystemDatasetInstantiator datasetInstantiator = datasetInstantiatorFactory.create()) {
        dataset = datasetInstantiator.getDataset(datasetInstanceId);

        if (dataset == null) {
            responder.sendString(HttpResponseStatus.NOT_FOUND, "Cannot load dataset " + datasetInstanceId);
            return;
        }
    } catch (IOException e) {
        String classNotFoundMessage = isClassNotFoundException(e);
        if (classNotFoundMessage != null) {
            JsonObject json = new JsonObject();
            json.addProperty("handle", QueryHandle.NO_OP.getHandle());
            responder.sendJson(HttpResponseStatus.OK, json);
            return;
        }
        LOG.error("Exception instantiating dataset {}.", datasetInstanceId, e);
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR,
                "Exception instantiating dataset " + datasetName);
        return;
    }

    try {
        if (!(dataset instanceof PartitionedFileSet)) {
            responder.sendString(HttpResponseStatus.BAD_REQUEST, "not a partitioned dataset.");
            return;
        }
        Partitioning partitioning = ((PartitionedFileSet) dataset).getPartitioning();

        Reader reader = new InputStreamReader(new ChannelBufferInputStream(request.getContent()));
        Map<String, String> properties = GSON.fromJson(reader, new TypeToken<Map<String, String>>() {
        }.getType());
        String fsPath = properties.get("path");
        if (fsPath == null) {
            responder.sendString(HttpResponseStatus.BAD_REQUEST, "path was not specified.");
            return;
        }

        PartitionKey partitionKey;
        try {
            partitionKey = PartitionedFileSetArguments.getOutputPartitionKey(properties, partitioning);
        } catch (Exception e) {
            responder.sendString(HttpResponseStatus.BAD_REQUEST, "invalid partition key: " + e.getMessage());
            return;
        }
        if (partitionKey == null) {
            responder.sendString(HttpResponseStatus.BAD_REQUEST, "no partition key was given.");
            return;
        }

        QueryHandle handle = exploreTableManager.addPartition(datasetInstanceId, partitionKey, fsPath);
        JsonObject json = new JsonObject();
        json.addProperty("handle", handle.getHandle());
        responder.sendJson(HttpResponseStatus.OK, json);
    } catch (Throwable e) {
        LOG.error("Got exception:", e);
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR, e.getMessage());
    }
}

From source file:co.cask.cdap.explore.executor.ExploreExecutorHttpHandler.java

License:Apache License

@POST
@Path("datasets/{dataset}/deletePartition")
public void dropPartition(HttpRequest request, HttpResponder responder,
        @PathParam("namespace-id") String namespaceId, @PathParam("dataset") String datasetName) {
    Id.DatasetInstance datasetInstanceId = Id.DatasetInstance.from(namespaceId, datasetName);
    Dataset dataset;/*  w  ww .j  av a 2s  .  c o  m*/
    try (SystemDatasetInstantiator datasetInstantiator = datasetInstantiatorFactory.create()) {

        dataset = datasetInstantiator.getDataset(datasetInstanceId);
        if (dataset == null) {
            responder.sendString(HttpResponseStatus.NOT_FOUND, "Cannot load dataset " + datasetInstanceId);
            return;
        }
    } catch (IOException e) {
        String classNotFoundMessage = isClassNotFoundException(e);
        if (classNotFoundMessage != null) {
            JsonObject json = new JsonObject();
            json.addProperty("handle", QueryHandle.NO_OP.getHandle());
            responder.sendJson(HttpResponseStatus.OK, json);
            return;
        }
        LOG.error("Exception instantiating dataset {}.", datasetInstanceId, e);
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR,
                "Exception instantiating dataset " + datasetInstanceId);
        return;
    }

    try {
        if (!(dataset instanceof PartitionedFileSet)) {
            responder.sendString(HttpResponseStatus.BAD_REQUEST, "not a partitioned dataset.");
            return;
        }
        Partitioning partitioning = ((PartitionedFileSet) dataset).getPartitioning();

        Reader reader = new InputStreamReader(new ChannelBufferInputStream(request.getContent()));
        Map<String, String> properties = GSON.fromJson(reader, new TypeToken<Map<String, String>>() {
        }.getType());

        PartitionKey partitionKey;
        try {
            partitionKey = PartitionedFileSetArguments.getOutputPartitionKey(properties, partitioning);
        } catch (Exception e) {
            responder.sendString(HttpResponseStatus.BAD_REQUEST, "invalid partition key: " + e.getMessage());
            return;
        }
        if (partitionKey == null) {
            responder.sendString(HttpResponseStatus.BAD_REQUEST, "no partition key was given.");
            return;
        }

        QueryHandle handle = exploreTableManager.dropPartition(datasetInstanceId, partitionKey);
        JsonObject json = new JsonObject();
        json.addProperty("handle", handle.getHandle());
        responder.sendJson(HttpResponseStatus.OK, json);
    } catch (Throwable e) {
        LOG.error("Got exception:", e);
        responder.sendString(HttpResponseStatus.INTERNAL_SERVER_ERROR, e.getMessage());
    }
}

From source file:co.cask.cdap.explore.executor.ExploreMetadataHttpHandler.java

License:Apache License

private void handleResponseEndpointExecution(HttpRequest request, HttpResponder responder,
        final EndpointCoreExecution<QueryHandle> execution) {
    genericEndpointExecution(request, responder, new EndpointCoreExecution<Void>() {
        @Override/* w  w  w .j  a  va  2  s .co m*/
        public Void execute(HttpRequest request, HttpResponder responder)
                throws IllegalArgumentException, SQLException, ExploreException, IOException {
            QueryHandle handle = execution.execute(request, responder);
            JsonObject json = new JsonObject();
            json.addProperty("handle", handle.getHandle());
            responder.sendJson(HttpResponseStatus.OK, json);
            return null;
        }
    });
}

From source file:co.cask.cdap.explore.executor.ExplorePingHandler.java

License:Apache License

@Path("/explore/status")
@GET//from w ww .jav a2 s.  co  m
public void status(@SuppressWarnings("UnusedParameters") HttpRequest request, HttpResponder responder) {
    JsonObject json = new JsonObject();
    json.addProperty("status", "OK");
    responder.sendJson(HttpResponseStatus.OK, json);
}