This patch moves the function 'get_next_clone_name' from Wok to Kimchi. The function adds, originally, an incremental number in each clone name, however this approach causes a race condiction if Kimchi tries to clone guest multiple times, sending multiple request at once. If clone requests are done so fast, it is possible that the plugin does not send all resource names in all_names parameter, then the function is going to select the same name for 2 or more clones, which is going to cause errors. To avoid this problem, it is better to use timestamps in the clones names instead of incremental numbers. Then it guarantees names will be unique. Supporting timestamps in microsecond precision, avoids this type of error. New clone name will be "basename-clone-timestamp-name-suffix". Signed-off-by: Rodrigo Trujillo <rodrigo.trujillo@linux.vnet.ibm.com> --- utils.py | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/utils.py b/utils.py index 7524d4e..87d7d9b 100644 --- a/utils.py +++ b/utils.py @@ -23,6 +23,7 @@ import json import os import re import sqlite3 +import time import urllib2 from httplib import HTTPConnection, HTTPException from urlparse import urlparse @@ -224,3 +225,52 @@ def upgrade_objectstore_memory(): if total > 0: wok_log.info( "%d 'template' memory entries upgraded in objectstore.", total) + + +def get_next_clone_name(all_names, basename, name_suffix='', ts=False): + """Find the next available name for a cloned resource. + + If any resource named "<basename>-clone-<number><name_suffix>" is found + in "all_names", use the maximum "number" + 1; else, use 1. + + Arguments: + all_names -- All existing names for the resource type. This list will + be used to make sure the new name won't conflict with + existing names. + basename -- The name of the original resource. + name_suffix -- The resource name suffix (optional). This parameter + exist so that a resource named "foo.img" gets the name + "foo-clone-1.img" instead of "foo.img-clone-1". If this parameter + is used, the suffix should not be present in "basename". + ts -- use timestamp, instead of incremental numbers + + Return: + A UTF-8 string in the format "<basename>-clone-<number><name_suffix>". + """ + re_group_num = 'num' + + # Use timestamps or increase clone number + if ts: + # Microsecond precision + ts_suffix = int(time.time() * 1000000) + new_name = u'%s-clone-%d' % (basename, ts_suffix) + else: + re_expr = u'%s-clone-(?P<%s>\d+)' % (basename, re_group_num) + if name_suffix != '': + re_expr = u'%s%s' % (re_expr, name_suffix) + + max_num = 0 + re_compiled = re.compile(re_expr) + + for n in all_names: + match = re_compiled.match(n) + if match is not None: + max_num = max(max_num, int(match.group(re_group_num))) + + # increments the maximum "clone number" found + new_name = u'%s-clone-%d' % (basename, max_num + 1) + + if name_suffix != '': + new_name = new_name + name_suffix + + return new_name -- 2.1.0

This patch provides the support to clone a guest multiple times. User will be asked to provide the number of clone he/she wants, then UI is going to send that many requests to backend. Signed-off-by: Socorro Stoppler <socorro@linux.vnet.ibm.com> Signed-off-by: Rodrigo Trujillo <rodrigo.trujillo@linux.vnet.ibm.com> --- ui/js/src/kimchi.guest_main.js | 58 ++++++++++++++++++++++++++++++++---------- ui/pages/guest-clone.html.tmpl | 47 ++++++++++++++++++++++++++++++++++ ui/pages/i18n.json.tmpl | 3 ++- 3 files changed, 94 insertions(+), 14 deletions(-) create mode 100644 ui/pages/guest-clone.html.tmpl diff --git a/ui/js/src/kimchi.guest_main.js b/ui/js/src/kimchi.guest_main.js index 2542a63..e45f439 100644 --- a/ui/js/src/kimchi.guest_main.js +++ b/ui/js/src/kimchi.guest_main.js @@ -240,6 +240,14 @@ kimchi.vmmigrate = function(event) { wok.window.open('plugins/kimchi/guest-migration.html'); }; +kimchi.vmclone = function(event) { + var button = event.target; + var vm = $(button).closest('li[name=guest]'); + var vm_id = $(vm).attr("id"); + kimchi.selectedGuest = vm_id; + wok.window.open('plugins/kimchi/guest-clone.html'); +}; + kimchi.openVmSerialConsole = function(event) { var button = event.target; var vm = $(button).closest('li[name=guest]'); @@ -294,6 +302,18 @@ kimchi.resetGuestFilter = function() { } }; + +kimchi.initClone = function() { + var numTimesToClone = $('#numberClone').val(); + for (var i = 0; i < numTimesToClone; i++) { + kimchi.cloneGuest(kimchi.selectedGuest, function(data) { + kimchi.listVmsAuto(); + }); + } + wok.window.close(); +}; + + kimchi.listVmsAuto = function() { //Check if the actions button is opened or not, @@ -333,8 +353,8 @@ kimchi.listVmsAuto = function() { })); if (kimchi.trackingTasks.indexOf(tasks[i].id) == -1) kimchi.trackTask(tasks[i].id, null, function(err) { - wok.message.error(err.message); - }, null); + wok.message.error(err.message); + }, null); } }, null, true); return guests; @@ -752,17 +772,7 @@ kimchi.createGuestLi = function(vmObject, prevScreenImage, openMenu) { }); guestActions.find("[name=vm-clone]").on("click", function(event) { event.preventDefault(); - var guest = $(this).closest('li[name=guest]').attr("id"); - wok.confirm({ - title: i18n['KCHAPI6006M'], - content: i18n['KCHVM6010M'], - confirm: i18n['KCHAPI6002M'], - cancel: i18n['KCHAPI6003M'] - }, function() { - kimchi.cloneGuest(guest, function(data) { - kimchi.listVmsAuto(); - }); - }, null); + kimchi.vmclone(event); }); guestActions.find("[name=vm-migrate]").on('click', function(event) { event.preventDefault(); @@ -819,6 +829,28 @@ kimchi.guest_main = function() { kimchi.listVmsAuto(); }; + +kimchi.guest_clonevm_main = function() { + kimchi.initCloneDialog(); +}; + +kimchi.initCloneDialog = function(callback) { + $("#cloneFormOk").on("click", function() { + //Check if input is a number + var numClone = parseInt($('#numberClone').val()); + var err = ""; + if (isNaN(numClone)) { + err = i18n['KCHVM0001E']; + wok.message.error(err,'#alert-modal-container'); + } else { + $("#cloneFormOk").prop("disabled", true); + kimchi.initClone(); + } + }); +}; + + + kimchi.editTemplate = function(guestTemplate, oldPopStat) { if (oldPopStat) { return guestTemplate.replace("vm-action", "vm-action open"); diff --git a/ui/pages/guest-clone.html.tmpl b/ui/pages/guest-clone.html.tmpl new file mode 100644 index 0000000..25907fa --- /dev/null +++ b/ui/pages/guest-clone.html.tmpl @@ -0,0 +1,47 @@ +#* + * Project Kimchi + * + * Copyright IBM Corp, 2016 + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + *# +#unicode UTF-8 +#import gettext +#from wok.cachebust import href +#silent t = gettext.translation($lang.domain, $lang.localedir, languages=$lang.lang, fallback=True) +#silent _ = t.gettext +#silent _t = t.gettext +<!DOCTYPE html> +<html> +<body> + <div id="clone-guest-window" class="window modal-content"> + <div class="modal-header"> + <h4 class="modal-title" id="cloneModalLabel">$_("Clone a Guest")</h4> + </div> + <div id="cloneInfo" class="modal-body"> + <span id="alert-modal-container"></span> + <div class="alert alert-warning" role="alert">$_("When the target guest has SCSI or iSCSI volumes, they will be cloned on the default storage pool. The same will happen when the target pool does not have enough space to clone the volumes. Do you want to continue?")</div> + <div class="form-group"> + <label for="numberClone">$_("Number of times to clone")</label> + <input type="number" class="form-control" id="numberClone" min="1" /> + </div> + <div class="modal-footer"> + <button type="submit" id="cloneFormOk" class="btn btn-default">$_("Continue")</button> + <button type="button" id="cloneFormCancel" data-dismiss="modal" class="btn btn-default">$_("Cancel")</button> + </div> + </div> + <script> + kimchi.guest_clonevm_main(); + </script> +</body> +</html> diff --git a/ui/pages/i18n.json.tmpl b/ui/pages/i18n.json.tmpl index 34a44ab..5be0a66 100644 --- a/ui/pages/i18n.json.tmpl +++ b/ui/pages/i18n.json.tmpl @@ -64,7 +64,8 @@ "KCHVM6007M": "$_("Note the guest OS may ignore this request. Would you like to continue?")", "KCHVM6008M": "$_("Virtual Machine delete Confirmation")", "KCHVM6009M": "$_("This virtual machine is not persistent. Power Off will delete it. Continue?")", - "KCHVM6010M": "$_("When the target guest has SCSI or iSCSI volumes, they will be cloned on default storage pool. The same will happen when the target pool does not have enough space to clone the volumes. Do you want to continue?")", + + "KCHVM0001E": "$_("Input is not a number")", "KCHVMCD6001M": "$_("This CDROM will be detached permanently and you can re-attach it. Continue to detach it?")", "KCHVMCD6003M": "$_("Attaching...")", -- 2.1.0