But why would you want to pause a VM? Is this an end-user API or an admin API?
From: Yitao Jiang <willier...@gmail.com<mailto:willier...@gmail.com>> Reply-To: "dev@cloudstack.apache.org<mailto:dev@cloudstack.apache.org>" <dev@cloudstack.apache.org<mailto:dev@cloudstack.apache.org>> Date: Wednesday, March 12, 2014 at 5:52 PM To: "dev@cloudstack.apache.org<mailto:dev@cloudstack.apache.org>" <dev@cloudstack.apache.org<mailto:dev@cloudstack.apache.org>> Subject: RE: How writing a new api of Pause VirtualMachine Yeah,it doesn't expose. so i write a new api to implements suspend method. So i add some files as belows: api/src/org/apache/cloudstack/api/command/user/vm/PauseVMCmd.java @APICommand(name = "pauseVirtualMachine", description="Pause a virtual machine.", responseObject=SuccessResponse.class) public class PauseVMCmd extends BaseAsyncCmd { public static final Logger s_logger = Logger.getLogger(PauseVMCmd.class.getName()); private static final String s_name = "pausevirtualmachineresponse"; @Parameter(name=ApiConstants.ID, type=CommandType.UUID, required=true, description="The ID of the virtual machine") private Long id; public Long getId() { return id; } @Override public String getCommandName() { return s_name; } @Override public long getEntityOwnerId() { UserVm vm = _responseGenerator.findUserVmById(getId()); if (vm != null) { return vm.getAccountId(); } return Account.ACCOUNT_ID_SYSTEM; // no account info given, parent this command to SYSTEM so ERROR events are tracked } @Override public String getEventType() { return EventTypes.EVENT_VM_PAUSE; } @Override public String getEventDescription() { return "Pausing user vm: " + getId(); } public AsyncJob.Type getInstanceType() { return AsyncJob.Type.VirtualMachine; } public Long getInstanceId() { return getId(); } @Override public void execute() throws ResourceUnavailableException, InsufficientCapacityException{ UserContext.current().setEventDetails("Vm Id: "+getId()); Boolean result; result = _userVmService.pauseVirtualMachine(getEntityOwnerId(), getInstanceId()); if (result !=null){ } else { throw new ServerApiException(ApiErrorCode.INTERNAL_ERROR, "Failed to pause vm instance"); } } } And then add " pauseVirtualMachine=15" into commands.properties and core/src/com/cloud/agent/api/PauseAnswer.java core/src/com/cloud/agent/api/PauseCommand.java aslo it's implements in related files. When Calling api http://192.168.129.7:8080/client/api?command=pauseVirtualMachine&id=605258c5-d9ef-45fe-9ea2-554a52ce7696&response=json&sessionkey=XGVvGrHvnEXbcAWa0DFjn%2Fq2eQQ%3D&_=1394674930344 it's return in browser " { "pausevirtualmachineresponse" : {"uuidList":[],"errorcode":530,"cserrorcode":9999} } " ,and NPE showed in log file: DEBUG [cloud.api.ApiServlet] (759166160@qtp-1180783024-10:) ===START=== 192.168.129.1 -- GET command=pauseVirtualMachine&id=605258c5-d9ef-45fe-9ea2-554a52ce7696&response=json&sessionkey=XGVvGrHvnEXbcAWa0DFjn%2Fq2eQQ%3D&_=1394674930344 ERROR [cloud.api.ApiServer] (759166160@qtp-1180783024-10:) unhandled exception executing api command: pauseVirtualMachine java.lang.NullPointerException at com.cloud.api.ApiDispatcher.translateUuidToInternalId(ApiDispatcher.java:344) at com.cloud.api.ApiDispatcher.setFieldValue(ApiDispatcher.java:466) at com.cloud.api.ApiDispatcher.processParameters(ApiDispatcher.java:204) at com.cloud.api.ApiServer.queueCommand(ApiServer.java:465) at com.cloud.api.ApiServer.handleRequest(ApiServer.java:372) at com.cloud.api.ApiServlet.processRequest(ApiServlet.java:305) at com.cloud.api.ApiServlet.doGet(ApiServlet.java:66) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230) at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) DEBUG [cloud.api.ApiServlet] (759166160@qtp-1180783024-10:) ===END=== 192.168.129.1 -- GET command=pauseVirtualMachine&id=605258c5-d9ef-45fe-9ea2-554a52ce7696&response=json&sessionkey=XGVvGrHvnEXbcAWa0DFjn%2Fq2eQQ%3D&_=1394674930344. Did i miss any procedures of adding api ? On Mar 12, 2014 6:44 PM, "Stephen Turner" <stephen.tur...@citrix.com<mailto:stephen.tur...@citrix.com>> wrote: Not answering your question, but note that XenServer has two different concepts: pause/unpause and suspend/resume. Normally you want suspend, which suspends to disk; with pause, the VM will continue using memory. In fact, the XenServer UI (XenCenter) doesn't even expose pause. -- Stephen Turner -----Original Message----- From: Yitao Jiang [mailto:willier...@gmail.com] Sent: 12 March 2014 04:55 To: dev@cloudstack.apache.org<mailto:dev@cloudstack.apache.org> Subject: How writing a new api of Pause VirtualMachine Hi, I wanna pause a vm and resume it in cloudstack4.2.1 with xenserver 6.2 hypervisor, but CS did not implement this feature, so i wondered if you experienced guys can do something for this.Or give me some useful informations about how doing this. Thanks, Yitao
