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598 lines
20 KiB
C++
598 lines
20 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2018, OpenNebula Project, OpenNebula Systems */
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/* */
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/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
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/* not use this file except in compliance with the License. You may obtain */
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/* a copy of the License at */
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/* */
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/* http://www.apache.org/licenses/LICENSE-2.0 */
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/* */
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/* Unless required by applicable law or agreed to in writing, software */
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/* distributed under the License is distributed on an "AS IS" BASIS, */
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/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
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/* See the License for the specific language governing permissions and */
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/* limitations under the License. */
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/* -------------------------------------------------------------------------- */
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#ifndef DISPATCH_MANAGER_H_
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#define DISPATCH_MANAGER_H_
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#include "ActionManager.h"
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#include "HostPool.h"
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#include "VirtualMachinePool.h"
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#include "VirtualRouterPool.h"
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#include "ClusterPool.h"
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#include "UserPool.h"
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using namespace std;
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extern "C" void * dm_action_loop(void *arg);
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//Forward definitions
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class TransferManager;
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class LifeCycleManager;
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class VirtualMachineManager;
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class ImageManager;
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struct RequestAttributes;
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/* -------------------------------------------------------------------------- */
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/* -------------------------------------------------------------------------- */
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class DMAction : public ActionRequest
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{
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public:
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enum Actions
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{
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SUSPEND_SUCCESS, /**< Send by LCM when a VM is suspended*/
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STOP_SUCCESS, /**< Send by LCM when a VM is stopped*/
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UNDEPLOY_SUCCESS, /**< Send by LCM when a VM is undeployed and saved*/
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POWEROFF_SUCCESS, /**< Send by LCM when a VM is powered off */
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DONE, /**< Send by LCM when a VM is shut down*/
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RESUBMIT /**< Send by LCM when a VM is ready for resubmission*/
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};
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DMAction(Actions a, int v):ActionRequest(ActionRequest::USER),
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_action(a), _vm_id(v){};
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DMAction(const DMAction& o):ActionRequest(o._type), _action(o._action),
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_vm_id(o._vm_id){};
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Actions action() const
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{
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return _action;
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}
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int vm_id() const
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{
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return _vm_id;
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}
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ActionRequest * clone() const
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{
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return new DMAction(*this);
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}
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private:
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Actions _action;
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int _vm_id;
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};
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class DispatchManager : public ActionListener
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{
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public:
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DispatchManager():
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hpool(0), vmpool(0), clpool(0), vrouterpool(0), tm(0), vmm(0), lcm(0), imagem(0)
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{
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am.addListener(this);
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};
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~DispatchManager(){};
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/**
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* Initializes internal pointers to other managers. Must be called when
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* all the other managers exist in Nebula::instance
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*/
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void init_managers();
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/**
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* Triggers specific actions to the Dispatch Manager. This function
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* wraps the ActionManager trigger function.
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* @param action the DM action
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* @param vid VM unique id. This is the argument of the passed to the
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* invoked action.
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*/
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void trigger(DMAction::Actions action, int vid)
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{
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DMAction dm_ar(action, vid);
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am.trigger(dm_ar);
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}
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void finalize()
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{
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am.finalize();
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}
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/**
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* This functions creates a new thread for the Dispatch Manager. This
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* thread will wait in an action loop till it receives ACTION_FINALIZE.
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* @return 0 on success.
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*/
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int start();
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/**
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* Gets the thread identification.
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* @return pthread_t for the manager thread (that in the action loop).
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*/
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pthread_t get_thread_id() const
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{
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return dm_thread;
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};
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//--------------------------------------------------------------------------
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// DM Actions, the RM and the Scheduler will invoke this methods
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//--------------------------------------------------------------------------
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/**
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* Deploys a VM. A new history record MUST be added before calling this
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* function. Also the VM MUST have its mutex locked. If the function fails
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* the calling funtion is responsible for recovering from the error.
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* @param vm pointer to a VirtualMachine with its mutex locked.
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* @param ra information about the API call request
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* @return 0 on success
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*/
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int deploy(VirtualMachine * vm, const RequestAttributes& request);
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/**
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* Sets an imported VM to RUNNING state, a history record MUST be added,
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* and the VM MUST be locked.
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* @param vm pointer to a VirtualMachine with its mutex locked.
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* @param ra information about the API call request
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* @return 0 on success
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*/
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int import(VirtualMachine * vm, const RequestAttributes& ra);
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/**
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* Migrates a VM. The following actions must be performed before calling
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* this function:
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* - Lock the VM mutex.
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* - Update the History statistics of the current host.
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* - Add a new History record with the new host.
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* If the function fails the calling funtion is responsible for recovering
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* from the error.
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* @param vm pointer to a VirtualMachine with its mutex locked.
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* @param ra information about the API call request
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* @return 0 on success
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*/
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int migrate(VirtualMachine * vm, const RequestAttributes& request);
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/**
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* Migrates a VM. The following actions must be performed before calling
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* this function:
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* - Lock the VM mutex.
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* - Update the History statistics of the current host.
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* - Add a new History record with the new host.
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* If the function fails the calling funtion is responsible for recovering
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* from the error.
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* @param vm pointer to a VirtualMachine with its mutex locked.
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* @param ra information about the API call request
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* @return 0 on success
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*/
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int live_migrate(VirtualMachine * vm, const RequestAttributes& request);
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/**
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* Terminates a VM.
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* @param vid VirtualMachine identification
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* @param hard True to force the shutdown (cancel instead of shutdown)
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* @param ra information about the API call request
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* @return 0 on success, -1 if the VM does not exits or -2 if the VM is
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* in a wrong a state
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*/
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int terminate(int vid, bool hard, const RequestAttributes& request,
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string& error_str);
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/**
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* Shuts down a VM, but it is saved in the system DS instead of destroyed.
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* @param vid VirtualMachine identification
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* @param hard True to force the shutdown (cancel instead of shutdown)
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* @param ra information about the API call request
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* @return 0 on success, -1 if the VM does not exits or -2 if the VM is
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* in a wrong a state
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*/
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int undeploy (int vid, bool hard, const RequestAttributes& ra,
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string& error_str);
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/**
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* Powers off a VM.
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* @param vid VirtualMachine identification
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* @param ra information about the API call request
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* @param hard True to force the poweroff (cancel instead of shutdown)
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* @return 0 on success, -1 if the VM does not exits or -2 if the VM is
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* in a wrong a state
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*/
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int poweroff (int vid, bool hard, const RequestAttributes& ra,
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string& error_str);
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/**
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* Holds a VM.
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* @param vid VirtualMachine identification
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* @param ra information about the API call request
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* @return 0 on success, -1 if the VM does not exits or -2 if the VM is
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* in a wrong a state
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*/
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int hold(int vid, const RequestAttributes& ra, string& error_str);
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/**
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* Releases a VM.
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* @param vid VirtualMachine identification
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* @param ra information about the API call request
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* @return 0 on success, -1 if the VM does not exits or -2 if the VM is
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* in a wrong a state
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*/
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int release(int vid, const RequestAttributes& ra, string& error_str);
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/**
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* Stops a VM.
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* @param vid VirtualMachine identification
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* @param ra information about the API call request
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* @return 0 on success, -1 if the VM does not exits or -2 if the VM is
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* in a wrong a state
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*/
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int stop(int vid, const RequestAttributes& ra, string& error_str);
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/**
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* Suspends a VM.
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* @param vid VirtualMachine identification
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* @param ra information about the API call request
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* @return 0 on success, -1 if the VM does not exits or -2 if the VM is
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* in a wrong a state
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*/
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int suspend(int vid, const RequestAttributes& ra, string& error_str);
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/**
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* Resumes a VM.
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* @param vid VirtualMachine identification
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* @param ra information about the API call request
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* @return 0 on success, -1 if the VM does not exits or -2 if the VM is
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* in a wrong a state
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*/
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int resume(int vid, const RequestAttributes& ra, string& error_str);
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/**
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* Ends a VM life cycle inside ONE.
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* @param vm VirtualMachine object
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* @param ra information about the API call request
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* @return 0 on success, the VM mutex is unlocked
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*/
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int delete_vm(VirtualMachine * vm, const RequestAttributes& ra,
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string& error_str);
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/**
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* VM ID interface
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*/
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int delete_vm(int vid, const RequestAttributes& ra, string& error_str)
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{
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VirtualMachine * vm;
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vm = vmpool->get(vid);
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if ( vm == 0 )
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{
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error_str = "Virtual machine does not exist";
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return -1;
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}
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return delete_vm(vm, ra, error_str);
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}
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/**
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* Moves a VM to PENDING state preserving any resource (i.e. leases) and id
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* @param vm VirtualMachine object
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* @param ra information about the API call request
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* @return 0 on success
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*/
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int delete_recreate(VirtualMachine * vm, const RequestAttributes& ra,
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string& error_str);
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/**
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* Ends a VM life cycle inside ONE but let the VM running at the Hipervisor.
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* @param vm VirtualMachine object
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* @param ra information about the API call request
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* @return 0 on success, the VM mutex is unlocked
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*/
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int delete_vm_db(VirtualMachine * vm, const RequestAttributes& ra,
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string& error_str);
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/**
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* Recover the last operation on the VM
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* @param vm VirtualMachine object
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* @param success if the operation is assumed to succeed or not
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* @param ra information about the API call request
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* @return 0 on success
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*/
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int recover(VirtualMachine * vm, bool success, const RequestAttributes& ra,
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string& error_str);
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/**
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* Retry the last operation on the VM
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* @param vm VirtualMachine object
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* @param ra information about the API call request
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* @return 0 on success
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*/
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int retry(VirtualMachine * vm, const RequestAttributes& ra,
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string& error_str);
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/**
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* Reboots a VM preserving any resource and RUNNING state
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* @param vid VirtualMachine identification
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* @param hard True to force the shutdown (cancel instead of shutdown)
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* @param ra information about the API call request
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* @return 0 on success, -1 if the VM does not exits or -2 if the VM is
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* in a wrong a state
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*/
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int reboot(int vid, bool hard, const RequestAttributes& ra,
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string& error_str);
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/**
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* Set the re-scheduling flag for the VM (must be in RUNNING state)
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* @param vid VirtualMachine identification
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* @param do_resched set or unset the flag
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* @param ra information about the API call request
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*
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* @return 0 on success, -1 if the VM does not exits or -2 if the VM is
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* in a wrong a state
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*/
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int resched(int vid, bool do_resched, const RequestAttributes& ra,
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string& error_str);
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/**
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* Starts the attach disk action.
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* @param vid VirtualMachine identification
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* @param tmpl Template containing the new DISK attribute.
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* @param ra information about the API call request
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* @param error_str Error reason, if any
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*
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* @return 0 on success, -1 otherwise
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*/
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int attach(int vid, VirtualMachineTemplate * tmpl,
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const RequestAttributes& ra, string& error_str);
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/**
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* Starts the detach disk action.
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* @param vid VirtualMachine identification
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* @param disk_id Disk to detach
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* @param ra information about the API call request
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* @param error_str Error reason, if any
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*
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* @return 0 on success, -1 otherwise
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*/
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int detach(int id, int disk_id, const RequestAttributes& ra,
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string& error_str);
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/**
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* Starts the attach NIC action.
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* @param vid VirtualMachine identification
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* @param tmpl Template containing the new NIC attribute.
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* @param ra information about the API call request
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* @param error_str Error reason, if any
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*
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* @return 0 on success, -1 otherwise
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*/
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int attach_nic(int vid, VirtualMachineTemplate * tmpl,
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const RequestAttributes& ra, string& error_str);
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/**
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* Starts the detach NIC action.
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* @param vid VirtualMachine identification
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* @param nic_id NIC to detach
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* @param ra information about the API call request
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* @param error_str Error reason, if any
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*
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* @return 0 on success, -1 otherwise
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*/
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int detach_nic(int id, int nic_id, const RequestAttributes& ra,
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string& error_str);
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/**
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* Starts the snapshot create action
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*
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* @param vid VirtualMachine identification
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* @param name Name for the new snapshot
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* @param snap_id Will contain the new snapshot ID
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* @param ra information about the API call request
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* @param error_str Error reason, if any
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*
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* @return 0 on success, -1 otherwise
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*/
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int snapshot_create(int vid, string& name, int& snap_id,
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const RequestAttributes& ra, string& error_str);
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/**
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* Starts the snapshot revert action
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*
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* @param vid VirtualMachine identification
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* @param snap_id Snapshot to be restored
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* @param ra information about the API call request
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* @param error_str Error reason, if any
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*
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* @return 0 on success, -1 otherwise
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*/
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int snapshot_revert(int vid, int snap_id, const RequestAttributes& ra,
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string& error_str);
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/**
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* Starts the snapshot delete action
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*
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* @param vid VirtualMachine identification
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* @param snap_id Snapshot to be deleted
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* @param ra information about the API call request
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* @param error_str Error reason, if any
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*
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* @return 0 on success, -1 otherwise
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*/
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int snapshot_delete(int vid, int snap_id, const RequestAttributes& ra,
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string& error_str);
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/**
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* Starts the disk snapshot create action
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*
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* @param vid VirtualMachine identification
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* @param did DISK identification
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* @param name Description for the new snapshot
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* @param snap_id Will contain the new snapshot ID
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* @param ra information about the API call request
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* @param error_str Error reason, if any
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*
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* @return 0 on success, -1 otherwise
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*/
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int disk_snapshot_create(int vid, int did, const string& name, int& snap_id,
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const RequestAttributes& ra, string& error_str);
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/**
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* Reverts the disk state to a previous snapshot
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*
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* @param vid VirtualMachine identification
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* @param did DISK identification
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* @param snap_id Snapshot to be restored
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* @param ra information about the API call request
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* @param error_str Error reason, if any
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*
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* @return 0 on success, -1 otherwise
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*/
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int disk_snapshot_revert(int vid, int did, int snap_id,
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const RequestAttributes& ra, string& error_str);
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/**
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* Deletes a disk snapshot
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*
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* @param vid VirtualMachine identification
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* @param did DISK identification
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* @param snap_id Snapshot to be restored
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* @param ra information about the API call request
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* @param error_str Error reason, if any
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*
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* @return 0 on success, -1 otherwise
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*/
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int disk_snapshot_delete(int vid, int did, int snap_id,
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const RequestAttributes& ra, string& error_str);
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/**
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* Starts the disk resize create action
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*
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* @param vid VirtualMachine identification
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* @param did DISK identification
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* @param size new size for the disk
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* @param ra information about the API call request
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* @param error_str Error reason, if any
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*
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* @return 0 on success, -1 otherwise
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*/
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int disk_resize(int vid, int did, long long new_size,
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const RequestAttributes& ra, string& error_str);
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private:
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/**
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* Thread id for the Dispatch Manager
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*/
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pthread_t dm_thread;
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/**
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* Pointer to the Host Pool, to access hosts
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*/
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HostPool * hpool;
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/**
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* Pointer to the Virtual Machine Pool, to access VMs
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*/
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VirtualMachinePool * vmpool;
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/**
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* Pointer to the User Pool, to access user
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*/
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UserPool * upool;
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/**
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* Pointer to the Cluster Pool
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*/
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ClusterPool * clpool;
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/**
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* Pointer to the Virtual Router Pool
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*/
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VirtualRouterPool * vrouterpool;
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/**
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* Pointer to TransferManager
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*/
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TransferManager * tm;
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/**
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* Pointer to VirtualMachineManager
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*/
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VirtualMachineManager * vmm;
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/**
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* Pointer to LifeCycleManager
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*/
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LifeCycleManager * lcm;
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/**
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* Pointer to ImageManager
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*/
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ImageManager * imagem;
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/**
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* Action engine for the Manager
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*/
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ActionManager am;
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/**
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* Frees the resources associated to a VM: disks, ip addresses and Quotas
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*/
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void free_vm_resources(VirtualMachine * vm, bool check_images);
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|
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//--------------------------------------------------------------------------
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// DM Actions associated with a VM state transition
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//--------------------------------------------------------------------------
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void suspend_success_action(int vid);
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void stop_success_action(int vid);
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void undeploy_success_action(int vid);
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|
|
void poweroff_success_action(int vid);
|
|
|
|
void done_action(int vid);
|
|
|
|
void resubmit_action(int vid);
|
|
|
|
/**
|
|
* Function to execute the Manager action loop method within a new pthread
|
|
* (requires C linkage)
|
|
*/
|
|
friend void * dm_action_loop(void *arg);
|
|
|
|
// -------------------------------------------------------------------------
|
|
// Action Listener interface
|
|
// -------------------------------------------------------------------------
|
|
void finalize_action(const ActionRequest& ar)
|
|
{
|
|
NebulaLog::log("DiM",Log::INFO,"Stopping Dispatch Manager...");
|
|
};
|
|
|
|
void user_action(const ActionRequest& ar);
|
|
|
|
/**
|
|
* Fill a template only with the necessary attributes to update the quotas
|
|
* @param vm with the attributes
|
|
* @param template that will be filled
|
|
* @param only_running true to not add CPU, MEMORY and VMS counters
|
|
*/
|
|
void get_quota_template(VirtualMachine * vm,
|
|
VirtualMachineTemplate& quota_tmpl, bool only_running);
|
|
};
|
|
|
|
#endif /*DISPATCH_MANAGER_H*/
|