Java ClusterStateRequest.metaData方法代码示例

import org.elasticsearch.action.admin.cluster.state.ClusterStateRequest; //导入方法依赖的package包/类
@Override
public void handleRequest(final RestRequest request, final RestChannel channel, final Client client) {
    final ClusterStateRequest clusterStateRequest = Requests.clusterStateRequest();
    clusterStateRequest.indicesOptions(IndicesOptions.fromRequest(request, clusterStateRequest.indicesOptions()));
    clusterStateRequest.local(request.paramAsBoolean("local", clusterStateRequest.local()));
    clusterStateRequest.masterNodeTimeout(request.paramAsTime("master_timeout", clusterStateRequest.masterNodeTimeout()));

    final String[] indices = Strings.splitStringByCommaToArray(request.param("indices", "_all"));
    boolean isAllIndicesOnly = indices.length == 1 && "_all".equals(indices[0]);
    if (!isAllIndicesOnly) {
        clusterStateRequest.indices(indices);
    }

    if (request.hasParam("metric")) {
        EnumSet<ClusterState.Metric> metrics = ClusterState.Metric.parseString(request.param("metric"), true);
        // do not ask for what we do not need.
        clusterStateRequest.nodes(metrics.contains(ClusterState.Metric.NODES) || metrics.contains(ClusterState.Metric.MASTER_NODE));
        //there is no distinction in Java api between routing_table and routing_nodes, it's the same info set over the wire, one single flag to ask for it
        clusterStateRequest.routingTable(metrics.contains(ClusterState.Metric.ROUTING_TABLE) || metrics.contains(ClusterState.Metric.ROUTING_NODES));
        clusterStateRequest.metaData(metrics.contains(ClusterState.Metric.METADATA));
        clusterStateRequest.blocks(metrics.contains(ClusterState.Metric.BLOCKS));
        clusterStateRequest.customs(metrics.contains(ClusterState.Metric.CUSTOMS));
    }
    settingsFilter.addFilterSettingParams(request);

    client.admin().cluster().state(clusterStateRequest, new RestBuilderListener<ClusterStateResponse>(channel) {
        @Override
        public RestResponse buildResponse(ClusterStateResponse response, XContentBuilder builder) throws Exception {
            builder.startObject();
            builder.field(Fields.CLUSTER_NAME, response.getClusterName().value());
            response.getState().toXContent(builder, request);
            builder.endObject();
            return new BytesRestResponse(RestStatus.OK, builder);
        }
    });
}
 

import org.elasticsearch.action.admin.cluster.state.ClusterStateRequest; //导入方法依赖的package包/类
@Override
public RestChannelConsumer prepareRequest(final RestRequest request, final NodeClient client) throws IOException {
    final ClusterStateRequest clusterStateRequest = Requests.clusterStateRequest();
    clusterStateRequest.indicesOptions(IndicesOptions.fromRequest(request, clusterStateRequest.indicesOptions()));
    clusterStateRequest.local(request.paramAsBoolean("local", clusterStateRequest.local()));
    clusterStateRequest.masterNodeTimeout(request.paramAsTime("master_timeout", clusterStateRequest.masterNodeTimeout()));

    final String[] indices = Strings.splitStringByCommaToArray(request.param("indices", "_all"));
    boolean isAllIndicesOnly = indices.length == 1 && "_all".equals(indices[0]);
    if (!isAllIndicesOnly) {
        clusterStateRequest.indices(indices);
    }

    if (request.hasParam("metric")) {
        EnumSet<ClusterState.Metric> metrics = ClusterState.Metric.parseString(request.param("metric"), true);
        // do not ask for what we do not need.
        clusterStateRequest.nodes(metrics.contains(ClusterState.Metric.NODES) || metrics.contains(ClusterState.Metric.MASTER_NODE));
        /*
         * there is no distinction in Java api between routing_table and routing_nodes, it's the same info set over the wire, one single
         * flag to ask for it
         */
        clusterStateRequest.routingTable(
                metrics.contains(ClusterState.Metric.ROUTING_TABLE) || metrics.contains(ClusterState.Metric.ROUTING_NODES));
        clusterStateRequest.metaData(metrics.contains(ClusterState.Metric.METADATA));
        clusterStateRequest.blocks(metrics.contains(ClusterState.Metric.BLOCKS));
        clusterStateRequest.customs(metrics.contains(ClusterState.Metric.CUSTOMS));
    }
    settingsFilter.addFilterSettingParams(request);

    return channel -> client.admin().cluster().state(clusterStateRequest, new RestBuilderListener<ClusterStateResponse>(channel) {
        @Override
        public RestResponse buildResponse(ClusterStateResponse response, XContentBuilder builder) throws Exception {
            builder.startObject();
            builder.field(Fields.CLUSTER_NAME, response.getClusterName().value());
            builder.byteSizeField(Fields.CLUSTER_STATE_SIZE_IN_BYTES, Fields.CLUSTER_STATE_SIZE, response.getTotalCompressedSize());
            response.getState().toXContent(builder, request);
            builder.endObject();
            return new BytesRestResponse(RestStatus.OK, builder);
        }
    });
}
 

import org.elasticsearch.action.admin.cluster.state.ClusterStateRequest; //导入方法依赖的package包/类
public void execute(ClusterStateRequest request, final ActionListener<ClusterStateResponse> listener) {
    logger.debug("cluster state request {}", request);
    try {
        // TODO test

        List<String> metricsAsList = new ArrayList<>();
        if (request.blocks()) {
            metricsAsList.add("blocks");
        }
        if (request.routingTable()) {
            metricsAsList.add("routing_table");
        }
        if (request.nodes()) {
            metricsAsList.add("nodes");
        }
        if (request.metaData()) {
            metricsAsList.add("metadata");
        }

        String metrics;
        if (metricsAsList.isEmpty()) {
            metrics = "_all";
        } else {
            // TODO version and master_node are not in the request, so add them by default
            metricsAsList.add("version");
            metricsAsList.add("master_node");
            metrics = Joiner.on(",").join(metricsAsList);
        }

        String indices = Strings.arrayToCommaDelimitedString(request.indices());

        String uri = "/_cluster/state/" + metrics + "/" + indices;

        indicesAdminClient.getHttpClient().submit(HttpClientRequest.createPut(uri))
                .flatMap(ErrorHandler.AS_FUNC)
                .flatMap(new Func1<HttpClientResponse<ByteBuf>, Observable<ClusterStateResponse>>() {
                    @Override
                    public Observable<ClusterStateResponse> call(HttpClientResponse<ByteBuf> response) {
                        return response.getContent().flatMap(new Func1<ByteBuf, Observable<ClusterStateResponse>>() {
                            @Override
                            public Observable<ClusterStateResponse> call(ByteBuf byteBuf) {
                                // TODO
                                return null;
                            }
                        });
                    }
                })
                .single()
                .subscribe(new ListenerCompleterObserver<>(listener));

    } catch (Exception e) {
        listener.onFailure(e);
    }
}