/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.nifi.controller.status.history;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.nifi.web.api.dto.status.StatusDescriptorDTO;
import org.apache.nifi.web.api.dto.status.StatusHistoryDTO;
import org.apache.nifi.web.api.dto.status.StatusSnapshotDTO;
public class StatusHistoryUtil {
public static StatusHistoryDTO createStatusHistoryDTO(final StatusHistory statusHistory) {
final List<StatusSnapshotDTO> snapshotDtos = new ArrayList<>();
final Set<MetricDescriptor<?>> metricDescriptors = new LinkedHashSet<>();
final LinkedHashMap<String, String> componentDetails = new LinkedHashMap<>(statusHistory.getComponentDetails());
for (final StatusSnapshot snapshot : statusHistory.getStatusSnapshots()) {
snapshotDtos.add(StatusHistoryUtil.createStatusSnapshotDto(snapshot));
metricDescriptors.addAll(snapshot.getStatusMetrics().keySet());
}
final StatusHistoryDTO dto = new StatusHistoryDTO();
dto.setGenerated(new Date());
dto.setComponentDetails(componentDetails);
dto.setFieldDescriptors(StatusHistoryUtil.createFieldDescriptorDtos(metricDescriptors));
dto.setAggregateSnapshots(snapshotDtos);
return dto;
}
public static StatusDescriptorDTO createStatusDescriptorDto(final MetricDescriptor<?> metricDescriptor) {
final StatusDescriptorDTO dto = new StatusDescriptorDTO();
dto.setDescription(metricDescriptor.getDescription());
dto.setField(metricDescriptor.getField());
dto.setFormatter(metricDescriptor.getFormatter().name());
dto.setLabel(metricDescriptor.getLabel());
return dto;
}
public static List<StatusDescriptorDTO> createFieldDescriptorDtos(final Collection<MetricDescriptor<?>> metricDescriptors) {
final List<StatusDescriptorDTO> dtos = new ArrayList<>();
final Set<MetricDescriptor<?>> allDescriptors = new LinkedHashSet<>();
for (final MetricDescriptor<?> metricDescriptor : metricDescriptors) {
allDescriptors.add(metricDescriptor);
}
for (final MetricDescriptor<?> metricDescriptor : allDescriptors) {
dtos.add(createStatusDescriptorDto(metricDescriptor));
}
return dtos;
}
public static List<StatusDescriptorDTO> createFieldDescriptorDtos(final StatusHistory statusHistory) {
final List<StatusDescriptorDTO> dtos = new ArrayList<>();
final Set<MetricDescriptor<?>> allDescriptors = new LinkedHashSet<>();
for (final StatusSnapshot statusSnapshot : statusHistory.getStatusSnapshots()) {
for (final MetricDescriptor<?> metricDescriptor : statusSnapshot.getStatusMetrics().keySet()) {
allDescriptors.add(metricDescriptor);
}
}
for (final MetricDescriptor<?> metricDescriptor : allDescriptors) {
dtos.add(createStatusDescriptorDto(metricDescriptor));
}
return dtos;
}
public static StatusSnapshotDTO createStatusSnapshotDto(final StatusSnapshot statusSnapshot) {
final StatusSnapshotDTO dto = new StatusSnapshotDTO();
dto.setTimestamp(statusSnapshot.getTimestamp());
final Map<String, Long> statusMetrics = new HashMap<>();
for (final Map.Entry<MetricDescriptor<?>, Long> entry : statusSnapshot.getStatusMetrics().entrySet()) {
statusMetrics.put(entry.getKey().getField(), entry.getValue());
}
dto.setStatusMetrics(statusMetrics);
return dto;
}
}