Examples with StepType org.apache.hadoop.hdfs.server.namenode.startupprogress.StepType used on opensource projects

Example 1 with StepType

use of org.apache.hadoop.hdfs.server.namenode.startupprogress.StepType in project hadoop by apache.

the class StartupProgressServlet method doGet.

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
    resp.setContentType("application/json; charset=UTF-8");
    StartupProgress prog = NameNodeHttpServer.getStartupProgressFromContext(getServletContext());
    StartupProgressView view = prog.createView();
    JsonGenerator json = new JsonFactory().createGenerator(resp.getWriter());
    try {
        json.writeStartObject();
        json.writeNumberField(ELAPSED_TIME, view.getElapsedTime());
        json.writeNumberField(PERCENT_COMPLETE, view.getPercentComplete());
        json.writeArrayFieldStart(PHASES);
        for (Phase phase : view.getPhases()) {
            json.writeStartObject();
            json.writeStringField(NAME, phase.getName());
            json.writeStringField(DESC, phase.getDescription());
            json.writeStringField(STATUS, view.getStatus(phase).toString());
            json.writeNumberField(PERCENT_COMPLETE, view.getPercentComplete(phase));
            json.writeNumberField(ELAPSED_TIME, view.getElapsedTime(phase));
            writeStringFieldIfNotNull(json, FILE, view.getFile(phase));
            writeNumberFieldIfDefined(json, SIZE, view.getSize(phase));
            json.writeArrayFieldStart(STEPS);
            for (Step step : view.getSteps(phase)) {
                json.writeStartObject();
                StepType type = step.getType();
                if (type != null) {
                    json.writeStringField(NAME, type.getName());
                    json.writeStringField(DESC, type.getDescription());
                }
                json.writeNumberField(COUNT, view.getCount(phase, step));
                writeStringFieldIfNotNull(json, FILE, step.getFile());
                writeNumberFieldIfDefined(json, SIZE, step.getSize());
                json.writeNumberField(TOTAL, view.getTotal(phase, step));
                json.writeNumberField(PERCENT_COMPLETE, view.getPercentComplete(phase, step));
                json.writeNumberField(ELAPSED_TIME, view.getElapsedTime(phase, step));
                json.writeEndObject();
            }
            json.writeEndArray();
            json.writeEndObject();
        }
        json.writeEndArray();
        json.writeEndObject();
    } finally {
        IOUtils.cleanup(LOG, json);
    }
}