/*
* 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.addthis.hydra.job.web.resources;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import com.addthis.codec.json.CodecJSON;
import com.addthis.hydra.job.HostFailWorker;
import com.addthis.hydra.job.RebalanceOutcome;
import com.addthis.hydra.job.auth.PermissionsManager;
import com.addthis.hydra.job.spawn.Spawn;
import com.addthis.hydra.job.mq.HostState;
import com.addthis.maljson.JSONArray;
import com.addthis.maljson.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Path("/host")
public class HostResource {
private static final Logger log = LoggerFactory.getLogger(HostResource.class);
private final Spawn spawn;
private final HostFailWorker hostFailWorker;
private final PermissionsManager permissionsManager;
public HostResource(Spawn spawn) {
this.spawn = spawn;
this.hostFailWorker = spawn.getHostFailWorker();
this.permissionsManager = spawn.getPermissionsManager();
}
@GET
@Path("/rebalance")
@Produces(MediaType.APPLICATION_JSON)
public Response rebalanceHost(@QueryParam("id") String hostUuid,
@QueryParam("user") String user,
@QueryParam("token") String token,
@QueryParam("sudo") String sudo) throws Exception {
try {
if (!permissionsManager.adminAction(user, token, sudo)) {
return Response.status(Response.Status.UNAUTHORIZED).entity("insufficient privileges").build();
}
String[] hostUuids = hostUuid.split(",");
JSONArray outcomes = new JSONArray();
for (String uuid : hostUuids) {
emitLogLineForAction(user, "host rebalance on " + hostUuid);
RebalanceOutcome outcome = spawn.rebalanceHost(uuid);
JSONObject json = CodecJSON.encodeJSON(outcome);
outcomes.put(json);
}
return Response.ok(outcomes.toString()).build();
} catch (Exception ex) {
log.warn("", ex);
return Response.serverError().entity("Host Rebalance Error: " + ex.getMessage()).build();
}
}
@GET
@Path("/fail")
@Produces(MediaType.APPLICATION_JSON)
public Response failHost(@QueryParam("id") String hostUuids,
@QueryParam("deadFs") boolean filesystemDead,
@QueryParam("user") String user,
@QueryParam("token") String token,
@QueryParam("sudo") String sudo) throws Exception {
try {
if (!permissionsManager.adminAction(user, token, sudo)) {
return Response.status(Response.Status.UNAUTHORIZED).entity("insufficient privileges").build();
}
emitLogLineForAction(user, "fail host on " + hostUuids);
HostFailWorker.FailState failureMode;
if (filesystemDead) {
failureMode = HostFailWorker.FailState.FAILING_FS_DEAD;
} else {
failureMode = HostFailWorker.FailState.FAILING_FS_OKAY;
}
hostFailWorker.markHostsToFail(hostUuids, failureMode);
JSONObject json = new JSONObject();
json.put("success", hostUuids.split(",").length);
return Response.ok(json.toString()).build();
} catch (Exception ex) {
log.warn("", ex);
return Response.serverError().entity("Host Fail Error: " + ex.getMessage()).build();
}
}
@GET
@Path("/failcancel")
@Produces(MediaType.APPLICATION_JSON)
public Response cancelFailHost(@QueryParam("id") String hostUuids,
@QueryParam("user") String user,
@QueryParam("token") String token,
@QueryParam("sudo") String sudo) throws Exception {
try {
if (!permissionsManager.adminAction(user, token, sudo)) {
return Response.status(Response.Status.UNAUTHORIZED).entity("insufficient privileges").build();
}
hostFailWorker.removeHostsForFailure(hostUuids);
JSONObject json = new JSONObject();
json.put("success", hostUuids.split(",").length);
return Response.ok(json.toString()).build();
} catch (Exception ex) {
log.warn("", ex);
return Response.serverError().entity("Host Fail Error: " + ex.getMessage()).build();
}
}
@GET
@Path("/failinfo")
@Produces(MediaType.APPLICATION_JSON)
public Response hostFailInfo(@QueryParam("id") String hostUuids,
@QueryParam("deadFs") boolean filesystemDead,
@QueryParam("user") String user,
@QueryParam("token") String token,
@QueryParam("sudo") String sudo) throws Exception {
try {
if (!permissionsManager.adminAction(user, token, sudo)) {
Response.status(Response.Status.UNAUTHORIZED).entity("insufficient privileges").build();
}
return Response.ok(spawn.getHostFailWorker().getInfoForHostFailure(hostUuids, filesystemDead).toString()).build();
} catch (Exception ex) {
log.warn("", ex);
return Response.serverError().entity("Host Fail Error: " + ex.getMessage()).build();
}
}
@GET
@Path("/drop")
@Produces(MediaType.APPLICATION_JSON)
public Response dropHosts(@QueryParam("id") String hostUuid,
@QueryParam("user") String user,
@QueryParam("token") String token,
@QueryParam("sudo") String sudo) throws Exception {
try {
if (!permissionsManager.adminAction(user, token, sudo)) {
return Response.status(Response.Status.UNAUTHORIZED).entity("insufficient privileges").build();
}
String[] hostUuids = hostUuid.split(",");
for (String uuid : hostUuids) {
emitLogLineForAction(user, "delete host on " + uuid);
spawn.deleteHost(uuid);
}
return Response.ok().build();
} catch (Exception ex) {
log.warn("", ex);
return Response.serverError().entity("Host Drop Error: " + ex.getMessage()).build();
}
}
@GET
@Path("/toggle")
@Produces(MediaType.APPLICATION_JSON)
public Response enableHosts(@QueryParam("id") String hostUuid,
@QueryParam("user") String user,
@QueryParam("token") String token,
@QueryParam("sudo") String sudo,
@QueryParam("disable") boolean disable) throws Exception {
try {
if (!permissionsManager.adminAction(user, token, sudo)) {
return Response.status(Response.Status.UNAUTHORIZED).entity("insufficient privileges").build();
}
emitLogLineForAction(user, "toggle hosts");
spawn.toggleHosts(hostUuid, disable);
return Response.ok().build();
} catch (Exception ex) {
log.warn("", ex);
return Response.serverError().entity("Host Disable Error: " + ex.getMessage()).build();
}
}
@GET
@Path("/list")
@Produces(MediaType.APPLICATION_JSON)
public Response listHosts() {
JSONArray hosts = new JSONArray();
try {
for (HostState host : spawn.hostManager.listHostStatus(null)) {
hosts.put(spawn.getHostStateUpdateEvent(host));
}
return Response.ok(hosts.toString()).build();
} catch (Exception ex) {
log.warn("", ex);
return Response.serverError().entity(ex.toString()).build();
}
}
private static void emitLogLineForAction(String user, String desc) {
log.warn("User " + user + " initiated action: " + desc);
}
}