/* -------------------------------------------------------------------------- */ /* Copyright 2002-2013, OpenNebula Project (OpenNebula.org), C12G Labs */ /* */ /* 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. */ /* -------------------------------------------------------------------------- */ #ifndef VIRTUAL_MACHINE_H_ #define VIRTUAL_MACHINE_H_ #include "VirtualMachineTemplate.h" #include "PoolSQL.h" #include "History.h" #include "Image.h" #include "Log.h" #include "NebulaLog.h" #include "NebulaUtil.h" #include #include #include using namespace std; class AuthRequest; /* -------------------------------------------------------------------------- */ /* -------------------------------------------------------------------------- */ /** * The Virtual Machine class. It represents a VM... */ class VirtualMachine : public PoolObjectSQL { public: // ------------------------------------------------------------------------- // VM States // ------------------------------------------------------------------------- /** * Global Virtual Machine state */ enum VmState { INIT = 0, PENDING = 1, HOLD = 2, ACTIVE = 3, STOPPED = 4, SUSPENDED = 5, DONE = 6, FAILED = 7, POWEROFF = 8, UNDEPLOYED = 9 }; static int vm_state_from_str(string& st, VmState& state) { one_util::toupper(st); if ( st == "INIT" ) { state = INIT; } else if ( st == "PENDING" ) { state = PENDING; } else if ( st == "HOLD" ) { state = HOLD; } else if ( st == "ACTIVE" ) { state = ACTIVE; } else if ( st == "STOPPED" ) { state = STOPPED; } else if ( st == "SUSPENDED" ) { state = SUSPENDED; } else if ( st == "DONE" ) { state = DONE; } else if ( st == "FAILED" ) { state = FAILED; } else if ( st == "POWEROFF" ) { state = POWEROFF; } else if ( st == "UNDEPLOYED" ) { state = UNDEPLOYED; } else {return -1;} return 0; } static string& vm_state_to_str(string& st, VmState state) { switch (state) { case INIT : st = "INIT"; break; case PENDING : st = "PENDING"; break; case HOLD : st = "HOLD"; break; case ACTIVE : st = "ACTIVE"; break; case STOPPED : st = "STOPPED"; break; case SUSPENDED : st = "SUSPENDED"; break; case DONE : st = "DONE"; break; case FAILED : st = "FAILED"; break; case POWEROFF : st = "POWEROFF"; break; case UNDEPLOYED: st = "UNDEPLOYED"; break; } return st; } /** * Virtual Machine state associated to the Life-cycle Manager */ enum LcmState { LCM_INIT = 0, PROLOG = 1, BOOT = 2, RUNNING = 3, MIGRATE = 4, SAVE_STOP = 5, SAVE_SUSPEND = 6, SAVE_MIGRATE = 7, PROLOG_MIGRATE = 8, PROLOG_RESUME = 9, EPILOG_STOP = 10, EPILOG = 11, SHUTDOWN = 12, CANCEL = 13, FAILURE = 14, CLEANUP_RESUBMIT = 15, UNKNOWN = 16, HOTPLUG = 17, SHUTDOWN_POWEROFF = 18, BOOT_UNKNOWN = 19, BOOT_POWEROFF = 20, BOOT_SUSPENDED = 21, BOOT_STOPPED = 22, CLEANUP_DELETE = 23, HOTPLUG_SNAPSHOT = 24, HOTPLUG_NIC = 25, HOTPLUG_SAVEAS = 26, HOTPLUG_SAVEAS_POWEROFF = 27, HOTPLUG_SAVEAS_SUSPENDED = 28, SHUTDOWN_UNDEPLOY = 29, EPILOG_UNDEPLOY = 30, PROLOG_UNDEPLOY = 31, BOOT_UNDEPLOY = 32 }; static int lcm_state_from_str(string& st, LcmState& state) { one_util::toupper(st); if ( st == "LCM_INIT" ){ state = LCM_INIT; } else if ( st == "PROLOG") { state = PROLOG; } else if ( st == "BOOT") { state = BOOT; } else if ( st == "RUNNING") { state = RUNNING; } else if ( st == "MIGRATE") { state = MIGRATE; } else if ( st == "SAVE_STOP") { state = SAVE_STOP; } else if ( st == "SAVE_SUSPEND") { state = SAVE_SUSPEND; } else if ( st == "SAVE_MIGRATE") { state = SAVE_MIGRATE; } else if ( st == "PROLOG_MIGRATE") { state = PROLOG_MIGRATE; } else if ( st == "PROLOG_RESUME") { state = PROLOG_RESUME; } else if ( st == "EPILOG_STOP") { state = EPILOG_STOP; } else if ( st == "EPILOG") { state = EPILOG; } else if ( st == "SHUTDOWN") { state = SHUTDOWN; } else if ( st == "CANCEL") { state = CANCEL; } else if ( st == "FAILURE") { state = FAILURE; } else if ( st == "CLEANUP_RESUBMIT") { state = CLEANUP_RESUBMIT; } else if ( st == "UNKNOWN") { state = UNKNOWN; } else if ( st == "HOTPLUG") { state = HOTPLUG; } else if ( st == "SHUTDOWN_POWEROFF") { state = SHUTDOWN_POWEROFF; } else if ( st == "BOOT_UNKNOWN") { state = BOOT_UNKNOWN; } else if ( st == "BOOT_POWEROFF") { state = BOOT_POWEROFF; } else if ( st == "BOOT_SUSPENDED") { state = BOOT_SUSPENDED; } else if ( st == "BOOT_STOPPED") { state = BOOT_STOPPED; } else if ( st == "CLEANUP_DELETE") { state = CLEANUP_DELETE; } else if ( st == "HOTPLUG_SNAPSHOT") { state = HOTPLUG_SNAPSHOT; } else if ( st == "HOTPLUG_NIC") { state = HOTPLUG_NIC; } else if ( st == "HOTPLUG_SAVEAS") { state = HOTPLUG_SAVEAS; } else if ( st == "HOTPLUG_SAVEAS_POWEROFF") { state = HOTPLUG_SAVEAS_POWEROFF; } else if ( st == "HOTPLUG_SAVEAS_SUSPENDED") { state = HOTPLUG_SAVEAS_SUSPENDED; } else if ( st == "SHUTDOWN_UNDEPLOY") { state = SHUTDOWN_UNDEPLOY; } else if ( st == "EPILOG_UNDEPLOY") { state = EPILOG_UNDEPLOY; } else if ( st == "PROLOG_UNDEPLOY") { state = PROLOG_UNDEPLOY; } else if ( st == "BOOT_UNDEPLOY") { state = BOOT_UNDEPLOY; } else {return -1;} return 0; } static string& lcm_state_to_str(string& st, LcmState& state) { switch (state) { case LCM_INIT: st = "LCM_INIT"; break; case PROLOG: st = "PROLOG"; break; case BOOT: st = "BOOT"; break; case RUNNING: st = "RUNNING"; break; case MIGRATE: st = "MIGRATE"; break; case SAVE_STOP: st = "SAVE_STOP"; break; case SAVE_SUSPEND: st = "SAVE_SUSPEND"; break; case SAVE_MIGRATE: st = "SAVE_MIGRATE"; break; case PROLOG_MIGRATE: st = "PROLOG_MIGRATE"; break; case PROLOG_RESUME: st = "PROLOG_RESUME"; break; case EPILOG_STOP: st = "EPILOG_STOP"; break; case EPILOG: st = "EPILOG"; break; case SHUTDOWN: st = "SHUTDOWN"; break; case CANCEL: st = "CANCEL"; break; case FAILURE: st = "FAILURE"; break; case CLEANUP_RESUBMIT: st = "CLEANUP_RESUBMIT"; break; case UNKNOWN: st = "UNKNOWN"; break; case HOTPLUG: st = "HOTPLUG"; break; case SHUTDOWN_POWEROFF: st = "SHUTDOWN_POWEROFF"; break; case BOOT_UNKNOWN: st = "BOOT_UNKNOWN"; break; case BOOT_POWEROFF: st = "BOOT_POWEROFF"; break; case BOOT_SUSPENDED: st = "BOOT_SUSPENDED"; break; case BOOT_STOPPED: st = "BOOT_STOPPED"; break; case CLEANUP_DELETE: st = "CLEANUP_DELETE"; break; case HOTPLUG_SNAPSHOT: st = "HOTPLUG_SNAPSHOT"; break; case HOTPLUG_NIC: st = "HOTPLUG_NIC"; break; case HOTPLUG_SAVEAS: st = "HOTPLUG_SAVEAS"; break; case HOTPLUG_SAVEAS_POWEROFF: st = "HOTPLUG_SAVEAS_POWEROFF"; break; case HOTPLUG_SAVEAS_SUSPENDED: st = "HOTPLUG_SAVEAS_SUSPENDED"; break; case SHUTDOWN_UNDEPLOY: st = "SHUTDOWN_UNDEPLOY"; break; case EPILOG_UNDEPLOY: st = "EPILOG_UNDEPLOY"; break; case PROLOG_UNDEPLOY: st = "PROLOG_UNDEPLOY"; break; case BOOT_UNDEPLOY: st = "BOOT_UNDEPLOY"; break; } return st; } // ------------------------------------------------------------------------- // Log & Print // ------------------------------------------------------------------------- /** * writes a log message in vm.log. The class lock should be locked and * the VM MUST BE obtained through the VirtualMachinePool get() method. */ void log( const char * module, const Log::MessageType type, const ostringstream& message) const { if (_log != 0) { _log->log(module,type,message.str().c_str()); } }; /** * writes a log message in vm.log. The class lock should be locked and * the VM MUST BE obtained through the VirtualMachinePool get() method. */ void log( const char * module, const Log::MessageType type, const char * message) const { if (_log != 0) { _log->log(module,type,message); } }; /** * Function to print the VirtualMachine object into a string in * XML format * @param xml the resulting XML string * @return a reference to the generated string */ string& to_xml(string& xml) const { return to_xml_extended(xml, 1); } /** * Function to print the VirtualMachine object into a string in * XML format, with extended information (full history records) * @param xml the resulting XML string * @return a reference to the generated string */ string& to_xml_extended(string& xml) const { return to_xml_extended(xml, 2); } /** * Rebuilds the object from an xml formatted string * @param xml_str The xml-formatted string * * @return 0 on success, -1 otherwise */ int from_xml(const string &xml_str); // ------------------------------------------------------------------------ // Dynamic Info // ------------------------------------------------------------------------ /** * Updates VM dynamic information (id). * @param _deploy_id the VMM driver specific id */ void update_info( const string& _deploy_id) { deploy_id = _deploy_id; }; /** * Updates VM dynamic information (usage counters), and updates last_poll * @param _memory Kilobytes used by the VM (total) * @param _cpu used by the VM (rate) * @param _net_tx transmitted bytes (total) * @param _net_rx received bytes (total) */ void update_info( const int _memory, const int _cpu, const long long _net_tx, const long long _net_rx, const map &custom); /** * Returns the deployment ID * @return the VMM driver specific ID */ const string& get_deploy_id() const { return deploy_id; }; /** * Sets the VM exit time * @param _et VM exit time (when it arrived DONE/FAILED states) */ void set_exit_time(time_t et) { etime = et; }; /** * Sets the KERNEL OS attribute (path to the kernel file). Used when * the template is using a FILE Datastore for it * @param path to the kernel (in the remote host) */ void set_kernel(const string& kernel) { vector os_attr; VectorAttribute * os; int num = obj_template->get("OS", os_attr); if ( num == 0 ) { return; } os = dynamic_cast(os_attr[0]); os->replace("KERNEL", kernel); }; /** * Sets the INITRD OS attribute (path to the initrd file). Used when * the template is using a FILE Datastore for it * @param path to the initrd (in the remote host) */ void set_initrd(const string& initrd) { vector os_attr; VectorAttribute * os; int num = obj_template->get("OS", os_attr); if ( num == 0 ) { return; } os = dynamic_cast(os_attr[0]); os->replace("INITRD", initrd); }; // ------------------------------------------------------------------------ // Access to VM locations // ------------------------------------------------------------------------ /** * Returns the remote VM directory. The VM remote dir is in the form: * $DATASTORE_LOCATION/$SYSTEM_DS_ID/$VM_ID. The remote system_dir stores * disks for a running VM in the target host. * @return the remote system directory for the VM */ const string& get_remote_system_dir() const { return history->rsystem_dir; } /** * Returns the local VM directory. The VM local dir is in the form: * $SYSTEM_DS_BASE_PATH/$VM_ID. Temporary stores VM disks. * @return the system directory for the VM */ string get_system_dir() const; // ------------------------------------------------------------------------ // History // ------------------------------------------------------------------------ /** * Adds a new history record an writes it in the database. */ void add_history( int hid, int cid, const string& hostname, const string& vmm_mad, const string& vnm_mad, const string& tm_mad, const string& ds_location, int ds_id); /** * Duplicates the last history record. Only the host related fields are * affected (i.e. no counter is copied nor initialized). * @param reason explaining the new addition. */ void cp_history(); /** * Duplicates the previous history record. Only the host related fields are * affected (i.e. no counter is copied nor initialized). * @param reason explaining the new addition. */ void cp_previous_history(); /** * Checks if the VM has a valid history record. This function * MUST be called before using any history related function. * @return true if the VM has a record */ bool hasHistory() const { return (history!=0); }; /** * Checks if the VM has a valid previous history record. This function * MUST be called before using any previous_history related function. * @return true if the VM has a previous record */ bool hasPreviousHistory() const { return (previous_history!=0); }; /** * Returns the VMM driver name for the current host. The hasHistory() * function MUST be called before this one. * @return the VMM mad name */ const string & get_vmm_mad() const { return history->vmm_mad_name; }; /** * Returns the VMM driver name for the previous host. The hasPreviousHistory() * function MUST be called before this one. * @return the VMM mad name */ const string & get_previous_vmm_mad() const { return previous_history->vmm_mad_name; }; /** * Returns the VNM driver name for the current host. The hasHistory() * function MUST be called before this one. * @return the VNM mad name */ const string & get_vnm_mad() const { return history->vnm_mad_name; }; /** * Returns the VNM driver name for the previous host. The hasPreviousHistory() * function MUST be called before this one. * @return the VNM mad name */ const string & get_previous_vnm_mad() const { return previous_history->vnm_mad_name; }; /** * Returns the datastore ID of the system DS for the host. The hasHistory() * function MUST be called before this one. * @return the ds id */ string get_ds_id() const { ostringstream oss; oss << history->ds_id; return oss.str(); }; /** * Returns the datastore ID of the system DS for the previous host. * The hasPreviousHistory() function MUST be called before this one. * @return the TM mad name */ string get_previous_ds_id() const { ostringstream oss; oss << previous_history->ds_id; return oss.str(); }; /** * Returns the TM driver name for the current host. The hasHistory() * function MUST be called before this one. * @return the TM mad name */ const string & get_tm_mad() const { return history->tm_mad_name; }; /** * Returns the TM driver name for the previous host. The * hasPreviousHistory() function MUST be called before this one. * @return the TM mad name */ const string & get_previous_tm_mad() const { return previous_history->tm_mad_name; }; /** * Returns the transfer filename. The transfer file is in the form: * $ONE_LOCATION/var/vms/$VM_ID/transfer.$SEQ * or, in case that OpenNebula is installed in root * /var/lib/one/vms/$VM_ID/transfer.$SEQ * The hasHistory() function MUST be called before this one. * @return the transfer filename */ const string & get_transfer_file() const { return history->transfer_file; }; /** * Returns the deployment filename. The deployment file is in the form: * $ONE_LOCATION/var/vms/$VM_ID/deployment.$SEQ * or, in case that OpenNebula is installed in root * /var/lib/one/vms/$VM_ID/deployment.$SEQ * The hasHistory() function MUST be called before this one. * @return the deployment file path */ const string & get_deployment_file() const { return history->deployment_file; }; /** * Returns the context filename. The context file is in the form: * $ONE_LOCATION/var/vms/$VM_ID/context.sh * or, in case that OpenNebula is installed in root * /var/lib/one/vms/$VM_ID/context.sh * The hasHistory() function MUST be called before this one. * @return the context file path */ const string & get_context_file() const { return history->context_file; } /** * Returns the token filename. The token file is in the form: * $ONE_LOCATION/var/vms/$VM_ID/token.txt * or, in case that OpenNebula is installed in root * /var/lib/one/vms/$VM_ID/token.txt * The hasHistory() function MUST be called before this one. * @return the token file path */ const string & get_token_file() const { return history->token_file; } /** * Returns the remote deployment filename. The file is in the form: * $DS_LOCATION/$SYSTEM_DS/$VM_ID/deployment.$SEQ * The hasHistory() function MUST be called before this one. * @return the deployment filename */ const string & get_remote_deployment_file() const { return history->rdeployment_file; }; /** * Returns the checkpoint filename for the current host. The checkpoint file * is in the form: * $DS_LOCATION/$SYSTEM_DS/$VM_ID/checkpoint * The hasHistory() function MUST be called before this one. * @return the checkpoint filename */ const string & get_checkpoint_file() const { return history->checkpoint_file; }; /** * Returns the hostname for the current host. The hasHistory() * function MUST be called before this one. * @return the hostname */ const string & get_hostname() const { return history->hostname; }; /** * Updates the current hostname. The hasHistory() * function MUST be called before this one. * @param hostname New hostname */ void set_hostname(const string& hostname) { history->hostname = hostname; }; /** * Returns the hostname for the previous host. The hasPreviousHistory() * function MUST be called before this one. * @return the hostname */ const string & get_previous_hostname() const { return previous_history->hostname; }; /** * Returns the reason that closed the history record in the previous host * @return the reason to close the history record in the previous host */ const History::EndReason get_previous_reason() const { return previous_history->reason; }; /** * Returns the action that closed the history record in the previous host * @return the action that closed the history record in the previous host */ const History::VMAction get_previous_action() const { return previous_history->action; }; /** * Get host id where the VM is or is going to execute. The hasHistory() * function MUST be called before this one. */ int get_hid() { return history->hid; } /** * Get host id where the VM was executing. The hasPreviousHistory() * function MUST be called before this one. */ int get_previous_hid() { return previous_history->hid; } /** * Sets start time of a VM. * @param _stime time when the VM started */ void set_stime(time_t _stime) { history->stime=_stime; }; /** * Sets VM info (with monitoring info) in the history record */ void set_vm_info() { to_xml_extended(history->vm_info, 0); }; /** * Sets VM info (with monitoring info) in the previous history record */ void set_previous_vm_info() { to_xml_extended(previous_history->vm_info, 0); }; /** * Sets end time of a VM. * @param _etime time when the VM finished */ void set_etime(time_t _etime) { history->etime=_etime; }; /** * Sets end time of a VM in the previous Host. * @param _etime time when the VM finished */ void set_previous_etime(time_t _etime) { previous_history->etime=_etime; }; /** * Sets start time of VM prolog. * @param _stime time when the prolog started */ void set_prolog_stime(time_t _stime) { history->prolog_stime=_stime; }; /** * Sets end time of VM prolog. * @param _etime time when the prolog finished */ void set_prolog_etime(time_t _etime) { history->prolog_etime=_etime; }; /** * Sets start time of VM running state. * @param _stime time when the running state started */ void set_running_stime(time_t _stime) { history->running_stime=_stime; }; /** * Gets the running start time for the VM */ time_t get_running_stime() { return history->running_stime; } /** * Sets end time of VM running state. * @param _etime time when the running state finished */ void set_running_etime(time_t _etime) { history->running_etime=_etime; }; /** * Sets end time of VM running state in the previous host. * @param _etime time when the running state finished */ void set_previous_running_etime(time_t _etime) { previous_history->running_etime=_etime; }; /** * Sets start time of VM epilog. * @param _stime time when the epilog started */ void set_epilog_stime(time_t _stime) { history->epilog_stime=_stime; }; /** * Sets end time of VM epilog. * @param _etime time when the epilog finished */ void set_epilog_etime(time_t _etime) { history->epilog_etime=_etime; }; /** * Sets the reason that closed the history record * @param _reason reason to close the history record */ void set_reason(History::EndReason _reason) { history->reason=_reason; }; /** * Sets the reason that closed the history record in the previous host * @param _reason reason to close the history record in the previous host */ void set_previous_reason(History::EndReason _reason) { previous_history->reason=_reason; }; /** * Sets the action that closed the history record * @param action that closed the history record */ void set_action(History::VMAction action) { history->action = action; }; /** * Sets the action that closed the history record in the previous host * @param action that closed the history record in the previous host */ void set_previous_action(History::VMAction action) { previous_history->action = action; }; // ------------------------------------------------------------------------ // Template // ------------------------------------------------------------------------ /** * Parse a string and substitute variables (e.g. $NAME) using the VM * template values: * @param attribute, the string to be parsed * @param parsed, the resulting parsed string * @param error description in case of failure * @return 0 on success. */ int parse_template_attribute(const string& attribute, string& parsed, string& error); /** * Parse a file string variable (i.e. $FILE) using the FILE_DS datastores. * It should be used for OS/DS_KERNEL, OS/DS_INITRD, CONTEXT/DS_FILES. * @param attribute the string to be parsed * @param img_ids ids of the FILE images in the attribute * @param error description in case of failure * @return 0 on success. */ int parse_file_attribute(string attribute, vector& img_ids, string& error); /** * Factory method for virtual machine templates */ Template * get_new_template() const { return new VirtualMachineTemplate; } /** * Returns a copy of the VirtualMachineTemplate * @return A copy of the VirtualMachineTemplate */ VirtualMachineTemplate * clone_template() const { return new VirtualMachineTemplate( *(static_cast(obj_template))); }; /** * This function replaces the *user template*. * @param tmpl_str new contents * @param keep_restricted If true, the restricted attributes of the * current template will override the new template * @param error string describing the error if any * @return 0 on success */ int replace_template(const string& tmpl_str, bool keep_restricted, string& error); /** * Append new attributes to the *user template*. * @param tmpl_str new contents * @param keep_restricted If true, the restricted attributes of the * current template will override the new template * @param error string describing the error if any * @return 0 on success */ int append_template(const string& tmpl_str, bool keep_restricted, string& error); /** * This function gets an attribute from the user template * @param name of the attribute * @param value of the attribute */ void get_user_template_attribute(const char * name, string& value) const { user_obj_template->get(name,value); } /** * Sets an error message with timestamp in the template * @param message Message string */ void set_template_error_message(const string& message); /** * Sets an error message with timestamp in the template * @param name of the error attribute * @param message Message string */ void set_template_error_message(const string& name, const string& message); /** * Deletes the error message from the template */ void clear_template_error_message(); /** * Sets an error message with timestamp in the template (ERROR_MONITOR) * @param message Message string */ void set_template_monitor_error(const string& message); /** * Deletes the error message from the template (ERROR_MONITOR) * @param message Message string */ void clear_template_monitor_error(); // ------------------------------------------------------------------------ // States // ------------------------------------------------------------------------ /** * Returns the VM state (Dispatch Manager) * @return the VM state */ VmState get_state() const { return state; }; /** * Returns the VM state (life-cycle Manager) * @return the VM state */ LcmState get_lcm_state() const { return lcm_state; }; /** * Sets VM state * @param s state */ void set_state(VmState s) { state = s; }; /** * Sets VM LCM state * @param s state */ void set_state(LcmState s) { lcm_state = s; }; /** * Sets the re-scheduling flag * @param set or unset the re-schedule flag */ void set_resched(bool do_sched) { if ( do_sched == true ) { resched = 1; } else { resched = 0; } }; // ------------------------------------------------------------------------ // Timers & Requirements // ------------------------------------------------------------------------ /** * Gets time from last information polling. * @return time of last poll (epoch) or 0 if never polled */ time_t get_last_poll() const { return last_poll; }; /** * Sets time of last information polling. * @param poll time in epoch, normally time(0) */ void set_last_poll(time_t poll) { last_poll = poll; }; /** * Get the VM physical requirements for the host. * @param cpu * @param memory * @param disk */ void get_requirements (int& cpu, int& memory, int& disk); /** * Checks if the resize parameters are valid * @param cpu New CPU. 0 means unchanged. * @param memory New MEMORY. 0 means unchanged. * @param vcpu New VCPU. 0 means unchanged. * @param error_str Error reason, if any * * @return 0 on success */ int check_resize (float cpu, int memory, int vcpu, string& error_str); /** * Resize the VM capacity * @param cpu * @param memory * @param vcpu * @param error_str Error reason, if any * * @return 0 on success */ int resize (float cpu, int memory, int vcpu, string& error_str); // ------------------------------------------------------------------------ // Network Leases & Disk Images // ------------------------------------------------------------------------ /** * Get all network leases for this Virtual Machine * @return 0 if success */ int get_network_leases(string &error_str); /** * Releases all network leases taken by this Virtual Machine */ void release_network_leases(); /** * Releases the network lease taken by this NIC * * @param nic NIC to be released * @param vmid Virtual Machine oid * * @return 0 on success, -1 otherwise */ static int release_network_leases(VectorAttribute const * nic, int vmid); /** * Get all disk images for this Virtual Machine * @param error_str Returns the error reason, if any * @return 0 if success */ int get_disk_images(string &error_str); /** * Releases all disk images taken by this Virtual Machine */ void release_disk_images(); /** * Check if the given disk is volatile */ static bool isVolatile(const VectorAttribute * disk); /** * Check if the template contains a volatile disk */ static bool isVolatile(const Template * tmpl); /** * Return the total SIZE of volatile disks */ static long long get_volatile_disk_size(Template * tmpl); // ------------------------------------------------------------------------ // Context related functions // ------------------------------------------------------------------------ /** * Writes the context file for this VM, and gets the paths to be included * in the context block device (CBD) * @param files space separated list of paths to be included in the CBD * @param disk_id CONTEXT/DISK_ID attribute value * @param token_password Password to encrypt the token, if it is set * @return -1 in case of error, 0 if the VM has no context, 1 on success */ int generate_context(string &files, int &disk_id, string& token_password); // ------------------------------------------------------------------------- // Datastore related functions // ------------------------------------------------------------------------- /** * Gest the associated image to the given disk_id * @param disk_id of the VM * @param hot is this a save_as hot operation * @param err_str describing the error * @return -1 if the image cannot saveas */ int get_image_from_disk(int disk_id, bool hot, string& err_str); /** * Sets the corresponding SAVE_AS state. * @param disk_id Index of the disk to save * @param hot is this a save_as hot operation * @return 0 if the VM can be saved as */ int set_saveas_state(int disk_id, bool hot); /** * Clears the SAVE_AS state, moving the VM to the original state. * @param disk_id Index of the disk to save * @param hot is this a save_as hot operation * @return 0 if the VM was in a SAVE_AS state */ int clear_saveas_state(int disk_id, bool hot); /** * Set the SAVE_AS attribute for the "disk_id"th disk. * @param disk_id Index of the disk to save * @param source to save the disk (SAVE_AS_SOURCE) * @param img_id ID of the image this disk will be saved to (SAVE_AS). */ int save_disk(int disk_id, const string& source, int img_id); /** * Set the SAVE_AS attribute for the "disk_id"th disk. * @param disk_id Index of the disk to save * @param source to save the disk (SAVE_AS_SOURCE) * @param img_id ID of the image this disk will be saved to (SAVE_AS). */ int save_disk_hot(int disk_id, const string& source, int img_id); /** * Get the original image id of the disk. It also checks that the disk can * be saved_as. * @param disk_id Index of the disk to save * @param error_str describes the error * @return -1 if failure */ int get_saveas_disk_hot(int& disk_id, string& source, int& image_id); /** * Clears the save_as attributes of the disk being (hot) saved as * * @param img_id ID of the image this disk will be saved to. Can be * -1 if it is not found * @return 0 if a disk with (HOTPLUG_)SAVE_AS was cleaned */ int cancel_saveas_disk(int& image_id); // ------------------------------------------------------------------------ // Authorization related functions // ------------------------------------------------------------------------ /** * Sets an authorization request for a VirtualMachine template based on * the images and networks used * @param uid for template owner * @param ar the AuthRequest object * @param tmpl the virtual machine template */ static void set_auth_request(int uid, AuthRequest& ar, VirtualMachineTemplate *tmpl); // ------------------------------------------------------------------------- // Hotplug related functions // ------------------------------------------------------------------------- /** * Collects information about VM DISKS * @param max_disk_id of the VM * @param used_targets by the DISKS of the VM */ void get_disk_info(int& max_disk_id, set& used_targets); /** * Get the IMAGE_ID of the image that's being saved as hot * @param disk_id of the DISK * @param image_id id of the image being saved * @return IMAGE_ID on success, -1 otherwise */ int get_disk_hot_info(int& image_id, int& disk_id, string& source); /** * Generate a DISK attribute to be attached to the VM. * @param tmpl Template containing a single DISK vector attribute. * @param used_targets targets in use by current DISKS * @param max_disk_id Max DISK/DISK_ID of the VM * @param uid of the VM owner * @param image_id returns the id of the acquired image * @param error_str describes the error * * @return a new VectorAttribute with the DISK (should be freed if not * added to the template), 0 in case of error; */ static VectorAttribute * set_up_attach_disk( int vm_id, VirtualMachineTemplate * tmpl, set& used_targets, int max_disk_id, int uid, int& image_id, string& error_str); /** * Returns the disk that is waiting for an attachment action * * @return the disk waiting for an attachment action, or 0 */ VectorAttribute* get_attach_disk(); /** * Cleans the ATTACH = YES attribute from the disks */ void clear_attach_disk(); /** * Deletes the DISK that was in the process of being attached * * @return the DISK or 0 if no disk was deleted */ VectorAttribute * delete_attach_disk(); /** * Adds a new disk to the virtual machine template. The disk should be * generated by the build_attach_disk * @param new_disk must be allocated in the heap */ void set_attach_disk(VectorAttribute * new_disk) { new_disk->replace("ATTACH", "YES"); obj_template->set(new_disk); } /** * Sets the attach attribute to the given disk * @param disk_id of the DISK * @return 0 if the disk_id was found -1 otherwise */ int set_attach_disk(int disk_id); // ------------------------------------------------------------------------ // NIC Hotplug related functions // ------------------------------------------------------------------------ /** * Collects information about VM DISKS * @param max_disk_id of the VM */ void get_nic_info(int& max_nic_id); /** * Generates a NIC attribute to be attached to the VM. * @param tmpl Template containing a single NIC vector attribute. * @param max_nic_id Max NIC/NIC_ID of the VM * @param uid of the VM owner * @param network_id returns the id of the acquired network * @param error_str describes the error * * @return a new VectorAttribute with the DISK (should be freed if not * added to the template), 0 in case of error */ static VectorAttribute * set_up_attach_nic( int vm_id, VirtualMachineTemplate * tmpl, int max_nic_id, int uid, int& network_id, string& error_str); /** * Cleans the ATTACH = YES attribute from the NICs */ void clear_attach_nic(); /** * Deletes the NIC that was in the process of being attached * * @return the deleted NIC or 0 if none was deleted */ VectorAttribute * delete_attach_nic(); /** * Adds a new NIC to the virtual machine template. The NIC should be * generated by the build_attach_nic * @param new_nic must be allocated in the heap */ void set_attach_nic(VectorAttribute * new_nic) { new_nic->replace("ATTACH", "YES"); obj_template->set(new_nic); } /** * Sets the attach attribute to the given NIC * @param nic_id of the NIC * @return 0 if the nic_id was found, -1 otherwise */ int set_attach_nic(int nic_id); // ------------------------------------------------------------------------ // Snapshot related functions // ------------------------------------------------------------------------ /** * Creates a new Snapshot attribute, and sets it to ACTIVE=YES * * @param name for the new Snapshot. If it is empty, the generated name * will be placed in this param * @param snap_id Id of the new snapshot * * @return 0 on success */ int new_snapshot(string& name, int& snap_id); /** * Sets the given Snapshot as ACTIVE=YES * * @param snap_id the snapshow ID * * @return 0 on success */ int set_active_snapshot(int snap_id); /** * Replaces HYPERVISOR_ID for the active SNAPSHOT * * @param hypervisor_id Id returned by the hypervisor for the newly * created snapshot */ void update_snapshot_id(string& hypervisor_id); /** * Cleans the ACTIVE = YES attribute from the snapshots */ void clear_active_snapshot(); /** * Deletes the SNAPSHOT that was in the process of being created */ void delete_active_snapshot(); /** * Deletes all SNAPSHOT attributes */ void delete_snapshots(); private: // ------------------------------------------------------------------------- // Friends // ------------------------------------------------------------------------- friend class VirtualMachinePool; // ************************************************************************* // Virtual Machine Attributes // ************************************************************************* // ------------------------------------------------------------------------- // VM Scheduling & Managing Information // ------------------------------------------------------------------------- /** * Last time (in epoch) that the VM was polled to get its status */ time_t last_poll; // ------------------------------------------------------------------------- // Virtual Machine Description // ------------------------------------------------------------------------- /** * The state of the virtual machine. */ VmState state; /** * The state of the virtual machine (in the Life-cycle Manager). */ LcmState lcm_state; /** * Marks the VM as to be re-scheduled */ int resched; /** * Start time, the VM enter the nebula system (in epoch) */ time_t stime; /** * Exit time, the VM leave the nebula system (in epoch) */ time_t etime; /** * Deployment specific identification string, as returned by the VM driver */ string deploy_id; /** * Memory in Kilobytes used by the VM */ int memory; /** * CPU usage (percent) */ int cpu; /** * Network usage, transmitted bytes */ long long net_tx; /** * Network usage, received bytes */ long long net_rx; /** * History record, for the current host */ History * history; /** * History record, for the previous host */ History * previous_history; /** * Complete set of history records for the VM */ vector history_records; // ------------------------------------------------------------------------- // Logging & Dirs // ------------------------------------------------------------------------- /** * Log class for the virtual machine, it writes log messages in * $ONE_LOCATION/var/$VID/vm.log * or, in case that OpenNebula is installed in root * /var/log/one/$VM_ID.log * For the syslog... TODO */ Log * _log; /** * User template to store custom metadata. This template can be updated * */ VirtualMachineTemplate * user_obj_template; // ************************************************************************* // DataBase implementation (Private) // ************************************************************************* /** * Bootstraps the database table(s) associated to the VirtualMachine * @return 0 on success */ static int bootstrap(SqlDB * db) { int rc; ostringstream oss_vm(VirtualMachine::db_bootstrap); ostringstream oss_monit(VirtualMachine::monit_db_bootstrap); ostringstream oss_hist(History::db_bootstrap); rc = db->exec(oss_vm); rc += db->exec(oss_monit); rc += db->exec(oss_hist); return rc; }; /** * Callback function to unmarshall a VirtualMachine object * (VirtualMachine::select) * @param num the number of columns read from the DB * @param names the column names * @param vaues the column values * @return 0 on success */ int select_cb(void *nil, int num, char **names, char ** values); /** * Execute an INSERT or REPLACE Sql query. * @param db The SQL DB * @param replace Execute an INSERT or a REPLACE * @param error_str Returns the error reason, if any * @return 0 one success */ int insert_replace(SqlDB *db, bool replace, string& error_str); /** * Updates the VM history record * @param db pointer to the db * @return 0 on success */ int update_history(SqlDB * db) { if ( history != 0 ) { return history->update(db); } else return -1; }; /** * Updates the previous history record * @param db pointer to the db * @return 0 on success */ int update_previous_history(SqlDB * db) { if ( previous_history != 0 ) { return previous_history->update(db); } else return -1; }; /** * Inserts the last monitoring, and deletes old monitoring entries. * * @param db pointer to the db * @return 0 on success */ int update_monitoring(SqlDB * db); // ------------------------------------------------------------------------- // Attribute Parser // ------------------------------------------------------------------------- /** * Mutex to perform just one attribute parse at a time */ static pthread_mutex_t lex_mutex; /** * Generates image attributes (DS_ID, TM_MAD, SOURCE...) for KERNEL and * INITRD files. * @param os attribute of the VM template * @param base_name of the attribute "KERNEL", or "INITRD" * @param base_type of the image attribute KERNEL, RAMDISK * @param error_str Returns the error reason, if any * @return 0 on success */ int set_os_file(VectorAttribute * os, const string& base_name, Image::ImageType base_type, string& error_str); /** * Parse the "OS" attribute of the template by substituting * $FILE variables * @param error_str Returns the error reason, if any * @return 0 on success */ int parse_os(string& error_str); /** * Parse the "CONTEXT" attribute of the template by substituting * $VARIABLE, $VARIABLE[ATTR] and $VARIABLE[ATTR, ATTR = VALUE] * @param error_str Returns the error reason, if any * @return 0 on success */ int parse_context(string& error_str); /** * Parse the "SCHED_REQUIREMENTS" attribute of the template by substituting * $VARIABLE, $VARIABLE[ATTR] and $VARIABLE[ATTR, ATTR = VALUE] * @param error_str Returns the error reason, if any * @return 0 on success */ int parse_requirements(string& error_str); /** * Adds automatic placement requirements: Datastore and Cluster * * @param error_str Returns the error reason, if any * @return 0 on success */ int automatic_requirements(string& error_str); /** * Parse the "GRAPHICS" attribute and generates a default PORT if not * defined */ void parse_graphics(); /** * Searches the meaningful attributes and moves them from the user template * to the internal template */ void parse_well_known_attributes(); /** * Function that renders the VM in XML format optinally including * extended information (all history records) * @param xml the resulting XML string * @param n_history Number of history records to include: * 0: none * 1: the last one * 2: all * @return a reference to the generated string */ string& to_xml_extended(string& xml, int n_history) const; protected: //************************************************************************** // Constructor //************************************************************************** VirtualMachine(int id, int uid, int gid, const string& uname, const string& gname, int umask, VirtualMachineTemplate * _vm_template); virtual ~VirtualMachine(); // ************************************************************************* // DataBase implementation // ************************************************************************* static const char * table; static const char * db_names; static const char * db_bootstrap; static const char * monit_table; static const char * monit_db_names; static const char * monit_db_bootstrap; /** * Reads the Virtual Machine (identified with its OID) from the database. * @param db pointer to the db * @return 0 on success */ int select(SqlDB * db); /** * Writes the Virtual Machine and its associated template in the database. * @param db pointer to the db * @return 0 on success */ int insert(SqlDB * db, string& error_str); /** * Writes/updates the Virtual Machine data fields in the database. * @param db pointer to the db * @return 0 on success */ int update(SqlDB * db) { string error_str; return insert_replace(db, true, error_str); } /** * Deletes a VM from the database and all its associated information * @param db pointer to the db * @return -1 */ int drop(SqlDB * db) { NebulaLog::log("ONE",Log::ERROR, "VM Drop not implemented!"); return -1; } // ************************************************************************* // Helpers // ************************************************************************* VectorAttribute* get_disk(int disk_id); }; #endif /*VIRTUAL_MACHINE_H_*/