/*
*============================================================================
* This library is free software; you can redistribute it and/or
* modify it under the terms of version 2.1 of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*============================================================================
* Copyright (C) 2007 XenSource Inc.
*============================================================================
*/
package com.xensource.xenapi;
import java.util.Map;
import java.util.Set;
import java.util.Date;
import java.lang.ref.SoftReference;
import java.util.HashMap;
import java.util.HashSet;
import java.io.PrintWriter;
import java.io.StringWriter;
import org.apache.xmlrpc.XmlRpcException;
/**
* A long-running asynchronous task
*
* @author XenSource Inc.
*/
public class Task extends XenAPIObject {
/**
* The XenAPI reference to this object.
*/
protected final String ref;
private Task(String ref) {
this.ref = ref;
}
public String toWireString() {
return this.ref;
}
/**
* This code helps ensure there is only one
* Task instance per XenAPI reference.
*/
private static final Map<String,SoftReference<Task>> cache =
new HashMap<String,SoftReference<Task>>();
protected static synchronized Task getInstFromRef(String ref) {
if(Task.cache.containsKey(ref)) {
Task instance =
Task.cache.get(ref).get();
if(instance != null) {
return instance;
}
}
Task instance = new Task(ref);
Task.cache.put(ref, new SoftReference<Task>(instance));
return instance;
}
/**
* Represents all the fields in a Task
*/
public static class Record implements Types.Record{
public String toString() {
StringWriter writer = new StringWriter();
PrintWriter print = new PrintWriter(writer);
print.printf("%1$20s: %2$s\n", "uuid", this.uuid);
print.printf("%1$20s: %2$s\n", "nameLabel", this.nameLabel);
print.printf("%1$20s: %2$s\n", "nameDescription", this.nameDescription);
print.printf("%1$20s: %2$s\n", "allowedOperations", this.allowedOperations);
print.printf("%1$20s: %2$s\n", "currentOperations", this.currentOperations);
print.printf("%1$20s: %2$s\n", "created", this.created);
print.printf("%1$20s: %2$s\n", "finished", this.finished);
print.printf("%1$20s: %2$s\n", "status", this.status);
print.printf("%1$20s: %2$s\n", "residentOn", this.residentOn);
print.printf("%1$20s: %2$s\n", "progress", this.progress);
print.printf("%1$20s: %2$s\n", "type", this.type);
print.printf("%1$20s: %2$s\n", "result", this.result);
print.printf("%1$20s: %2$s\n", "errorInfo", this.errorInfo);
print.printf("%1$20s: %2$s\n", "otherConfig", this.otherConfig);
return writer.toString();
}
/**
* Convert a task.Record to a Map
*/
public Map<String,Object> toMap() {
Map<String,Object> map = new HashMap<String,Object>();
map.put("uuid", this.uuid == null ? "" : this.uuid);
map.put("name_label", this.nameLabel == null ? "" : this.nameLabel);
map.put("name_description", this.nameDescription == null ? "" : this.nameDescription);
map.put("allowed_operations", this.allowedOperations == null ? new HashSet<Types.TaskAllowedOperations>() : this.allowedOperations);
map.put("current_operations", this.currentOperations == null ? new HashMap<String, Types.TaskAllowedOperations>() : this.currentOperations);
map.put("created", this.created == null ? new Date(0) : this.created);
map.put("finished", this.finished == null ? new Date(0) : this.finished);
map.put("status", this.status == null ? Types.TaskStatusType.UNRECOGNIZED : this.status);
map.put("resident_on", this.residentOn == null ? com.xensource.xenapi.Host.getInstFromRef("OpaqueRef:NULL") : this.residentOn);
map.put("progress", this.progress == null ? 0.0 : this.progress);
map.put("type", this.type == null ? "" : this.type);
map.put("result", this.result == null ? "" : this.result);
map.put("error_info", this.errorInfo == null ? new HashSet<String>() : this.errorInfo);
map.put("other_config", this.otherConfig == null ? new HashMap<String, String>() : this.otherConfig);
return map;
}
/**
* unique identifier/object reference
*/
public String uuid;
/**
* a human-readable name
*/
public String nameLabel;
/**
* a notes field containg human-readable description
*/
public String nameDescription;
/**
* list of the operations allowed in this state. This list is advisory only and the server state may have changed by the time this field is read by a client.
*/
public Set<Types.TaskAllowedOperations> allowedOperations;
/**
* links each of the running tasks using this object (by reference) to a current_operation enum which describes the nature of the task.
*/
public Map<String, Types.TaskAllowedOperations> currentOperations;
/**
* Time task was created
*/
public Date created;
/**
* Time task finished (i.e. succeeded or failed). If task-status is pending, then the value of this field has no meaning
*/
public Date finished;
/**
* current status of the task
*/
public Types.TaskStatusType status;
/**
* the host on which the task is running
*/
public Host residentOn;
/**
* if the task is still pending, this field contains the estimated fraction complete (0.-1.). If task has completed (successfully or unsuccessfully) this should be 1.
*/
public Double progress;
/**
* if the task has completed successfully, this field contains the type of the encoded result (i.e. name of the class whose reference is in the result field). Undefined otherwise.
*/
public String type;
/**
* if the task has completed successfully, this field contains the result value (either Void or an object reference). Undefined otherwise.
*/
public String result;
/**
* if the task has failed, this field contains the set of associated error strings. Undefined otherwise.
*/
public Set<String> errorInfo;
/**
* additional configuration
*/
public Map<String, String> otherConfig;
}
/**
* Get a record containing the current state of the given task.
*
* @return all fields from the object
*/
public Task.Record getRecord(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_record";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toTaskRecord(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get a reference to the task instance with the specified UUID.
*
* @param uuid UUID of object to return
* @return reference to the object
*/
public static Task getByUuid(Connection c, String uuid) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_by_uuid";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(uuid)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toTask(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get all the task instances with the given label.
*
* @param label label of object to return
* @return references to objects with matching names
*/
public static Set<Task> getByNameLabel(Connection c, String label) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_by_name_label";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(label)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toSetOfTask(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the uuid field of the given task.
*
* @return value of the field
*/
public String getUuid(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_uuid";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toString(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the name/label field of the given task.
*
* @return value of the field
*/
public String getNameLabel(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_name_label";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toString(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the name/description field of the given task.
*
* @return value of the field
*/
public String getNameDescription(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_name_description";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toString(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the allowed_operations field of the given task.
*
* @return value of the field
*/
public Set<Types.TaskAllowedOperations> getAllowedOperations(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_allowed_operations";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toSetOfTaskAllowedOperations(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the current_operations field of the given task.
*
* @return value of the field
*/
public Map<String, Types.TaskAllowedOperations> getCurrentOperations(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_current_operations";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toMapOfStringTaskAllowedOperations(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the created field of the given task.
*
* @return value of the field
*/
public Date getCreated(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_created";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toDate(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the finished field of the given task.
*
* @return value of the field
*/
public Date getFinished(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_finished";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toDate(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the status field of the given task.
*
* @return value of the field
*/
public Types.TaskStatusType getStatus(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_status";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toTaskStatusType(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the resident_on field of the given task.
*
* @return value of the field
*/
public Host getResidentOn(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_resident_on";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toHost(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the progress field of the given task.
*
* @return value of the field
*/
public Double getProgress(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_progress";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toDouble(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the type field of the given task.
*
* @return value of the field
*/
public String getType(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_type";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toString(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the result field of the given task.
*
* @return value of the field
*/
public String getResult(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_result";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toString(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the error_info field of the given task.
*
* @return value of the field
*/
public Set<String> getErrorInfo(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_error_info";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toSetOfString(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Get the other_config field of the given task.
*
* @return value of the field
*/
public Map<String, String> getOtherConfig(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_other_config";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toMapOfStringString(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Set the other_config field of the given task.
*
* @param otherConfig New value to set
*/
public void setOtherConfig(Connection c, Map<String, String> otherConfig) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.set_other_config";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref), Marshalling.toXMLRPC(otherConfig)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return;
}
throw new Types.BadServerResponse(response);
}
/**
* Add the given key-value pair to the other_config field of the given task.
*
* @param key Key to add
* @param value Value to add
*/
public void addToOtherConfig(Connection c, String key, String value) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.add_to_other_config";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref), Marshalling.toXMLRPC(key), Marshalling.toXMLRPC(value)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return;
}
throw new Types.BadServerResponse(response);
}
/**
* Remove the given key and its corresponding value from the other_config field of the given task. If the key is not in that Map, then do nothing.
*
* @param key Key to remove
*/
public void removeFromOtherConfig(Connection c, String key) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.remove_from_other_config";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref), Marshalling.toXMLRPC(key)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return;
}
throw new Types.BadServerResponse(response);
}
/**
* Create a new task object which must be manually destroyed.
*
* @param label short label for the new task
* @param description longer description for the new task
* @return The reference of the created task object
*/
public static Task create(Connection c, String label, String description) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.create";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(label), Marshalling.toXMLRPC(description)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toTask(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Destroy the task object
*
*/
public void destroy(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.destroy";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return;
}
throw new Types.BadServerResponse(response);
}
/**
* Request that a task be cancelled. Note that a task may fail to be cancelled and may complete or fail normally and note that, even when a task does cancel, it might take an arbitrary amount of time.
*
* @return Task
*/
public Task cancelAsync(Connection c) throws
Types.BadServerResponse,
XmlRpcException,
Types.OperationNotAllowed {
String method_call = "Async.task.cancel";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toTask(result);
} else if(response.get("Status").equals("Failure")) {
Object[] error = (Object[]) response.get("ErrorDescription");
if(error[0].equals("OPERATION_NOT_ALLOWED")) {
throw new Types.OperationNotAllowed((String) error[1]);
}
}
throw new Types.BadServerResponse(response);
}
/**
* Request that a task be cancelled. Note that a task may fail to be cancelled and may complete or fail normally and note that, even when a task does cancel, it might take an arbitrary amount of time.
*
*/
public void cancel(Connection c) throws
Types.BadServerResponse,
XmlRpcException,
Types.OperationNotAllowed {
String method_call = "task.cancel";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session), Marshalling.toXMLRPC(this.ref)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return;
} else if(response.get("Status").equals("Failure")) {
Object[] error = (Object[]) response.get("ErrorDescription");
if(error[0].equals("OPERATION_NOT_ALLOWED")) {
throw new Types.OperationNotAllowed((String) error[1]);
}
}
throw new Types.BadServerResponse(response);
}
/**
* Return a list of all the tasks known to the system.
*
* @return references to all objects
*/
public static Set<Task> getAll(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_all";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toSetOfTask(result);
}
throw new Types.BadServerResponse(response);
}
/**
* Return a map of task references to task records for all tasks known to the system.
*
* @return records of all objects
*/
public static Map<Task, Task.Record> getAllRecords(Connection c) throws
Types.BadServerResponse,
XmlRpcException {
String method_call = "task.get_all_records";
String session = c.getSessionReference();
Object[] method_params = {Marshalling.toXMLRPC(session)};
Map response = c.dispatch(method_call, method_params);
if(response.get("Status").equals("Success")) {
Object result = response.get("Value");
return Types.toMapOfTaskTaskRecord(result);
}
throw new Types.BadServerResponse(response);
}
}