Java tutorial
/* * Copyright 2018 Netflix, Inc. * * Licensed 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 com.netflix.spinnaker.igor.admin; import com.netflix.spinnaker.igor.polling.CommonPollingMonitor; import com.netflix.spinnaker.igor.polling.PollingMonitor; import com.netflix.spinnaker.kork.web.exceptions.NotFoundException; import java.util.ArrayList; import java.util.Optional; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.HttpStatus; import org.springframework.web.bind.annotation.*; import java.util.List; import java.util.stream.Collectors; import static java.lang.String.format; @RestController @RequestMapping("/admin") public class AdminController { private final Logger log = LoggerFactory.getLogger(getClass()); private final List<CommonPollingMonitor> pollingMonitors; @Autowired public AdminController(Optional<List<CommonPollingMonitor>> pollingMonitors) { this.pollingMonitors = pollingMonitors.orElseGet(ArrayList::new); } /** * Silently fast-forwards a poller. Fast-forwarding means that all pending cache state will be polled and saved, * but will not send Echo notifications. * * By default all partitions (ex: masters) will be fast-forwarded, however specific partition names should be * used whenever possible. * * @param monitorName The polling monitor name (ex: "DockerMonitor") * @param partition The partition name, if not provided, method will re-index the entire monitor */ @RequestMapping(value = "/pollers/fastforward/{monitorName}", method = RequestMethod.POST) @ResponseStatus(HttpStatus.NO_CONTENT) public void fastForward(@PathVariable String monitorName, @RequestParam(required = false) String partition) { CommonPollingMonitor pollingMonitor = pollingMonitors.stream() .filter(it -> it.getName().equals(monitorName)).findFirst() .orElseThrow(() -> new NotFoundException(format("PollingMonitor %s, available: %s", monitorName, pollingMonitors.stream().map(PollingMonitor::getName).collect(Collectors.toList())))); log.warn("Re-indexing {}:{}", monitorName, (partition == null) ? "ALL" : partition); if (partition == null) { pollingMonitor.poll(false); } else { pollingMonitor.pollSingle(pollingMonitor.getPollContext(partition).fastForward()); } } }