Examples with JsonParserIterator org.apache.druid.client.JsonParserIterator used on opensource projects

Example 1 with JsonParserIterator

use of org.apache.druid.client.JsonParserIterator in project druid by druid-io.

the class SystemSchema method getThingsFromLeaderNode.

public static <T> JsonParserIterator<T> getThingsFromLeaderNode(String query, TypeReference<T> typeRef, DruidLeaderClient leaderClient, ObjectMapper jsonMapper) {
    Request request;
    InputStreamFullResponseHolder responseHolder;
    try {
        request = leaderClient.makeRequest(HttpMethod.GET, query);
        responseHolder = leaderClient.go(request, new InputStreamFullResponseHandler());
        if (responseHolder.getStatus().getCode() != HttpServletResponse.SC_OK) {
            throw new RE("Failed to talk to leader node at [%s]. Error code[%d], description[%s].", query, responseHolder.getStatus().getCode(), responseHolder.getStatus().getReasonPhrase());
        }
    } catch (IOException | InterruptedException e) {
        throw new RuntimeException(e);
    }
    final JavaType javaType = jsonMapper.getTypeFactory().constructType(typeRef);
    return new JsonParserIterator<>(javaType, Futures.immediateFuture(responseHolder.getContent()), request.getUrl().toString(), null, request.getUrl().getHost(), jsonMapper);
}