Re: [ovirt-users] Request for oVirt Ansible modules testing feedback

Le 06/01/2017 à 13:39, Juan Hernández a écrit : > On 01/06/2017 12:20 PM, Nathanaël Blanchet wrote: >> >> Le 04/01/2017 à 18:55, Juan Hernández a écrit : >>> On 01/04/2017 05:38 PM, Nathanaël Blanchet wrote: >>>> Le 04/01/2017 à 15:41, Juan Hernández a écrit : >>>>> On 01/04/2017 12:30 PM, Yaniv Kaul wrote: >>>>>> On Wed, Jan 4, 2017 at 1:04 PM, Nicolas Ecarnot >>>>>> <nicolas(a)ecarnot.net >>>>>> <mailto:nicolas@ecarnot.net>> wrote: >>>>>> >>>>>> Hello, >>>>>> >>>>>> Le 04/01/2017 à 11:49, Nathanaël Blanchet a écrit : >>>>>> >>>>>> >>>>>> >>>>>> Le 04/01/2017 à 10:09, Andrea Ghelardi a écrit : >>>>>> >>>>>> >>>>>> Personally I don’t think ansible and ovirt-shell are >>>>>> mutually exclusive. >>>>>> >>>>>> Those who are in ansible and devops realms are not >>>>>> really >>>>>> scared by >>>>>> making python/ansible work with ovirt. >>>>>> >>>>>> From what I gather, playbooks are quite a de-facto >>>>>> pre-requisite to >>>>>> build up a real SaaC “Software as a Code” >>>>>> environment. >>>>>> >>>>>> >>>>>> >>>>>> On the other hand, ovirt-shell can and is a >>>>>> fast/easy >>>>>> way to >>>>>> perform >>>>>> “normal daily tasks”. >>>>>> >>>>>> totally agree but ovirt-shell is deprecated in 4.1 et >>>>>> will be >>>>>> removed in >>>>>> 4.2. Ansible or sdk4 are proposed as an alternative. >>>>>> >>>>>> >>>>>> Could someone point me to an URL where sdk4 is fully >>>>>> documented, as >>>>>> I have to get ready for ovirt-shell deprecation? >>>>>> >>>>>> >>>>>> The Rest API is partially documented under >>>>>> https://<engine>/api/model . >>>>>> It's not complete yet. All new features in 4.0 are documented and >>>>>> we are >>>>>> working on the 'older' features now. >>>>>> (contributions are welcome!) >>>>>> >>>>>> >>>>>> I'm sure no one at Redhat thought about deprecating a >>>>>> tool in >>>>>> favor >>>>>> of a new one before providing a complete user doc! >>>>>> >>>>>> >>>>>> In addition, the SDK RPM itself contains many examples. See [1]. >>>>>> (contributions are welcome!) >>>>>> >>>>>> Y. >>>>>> >>>>>> [1] >>>>>> https://github.com/oVirt/ovirt-engine-sdk/tree/master/sdk/examples >>>>>> >>>> Although these examples, I can successfully create a snapshot, but I >>>> didn't find the way to delete it... >>>> Regarding many example, it should be possible to locate any >>>> service by : >>>> name_service = connection.system_service().name.service() >>>> >>>> So logically it should be doable with snapshot like >>>> snapshots_service = connection.system_service().snapshots.service() >>>> but : AttributeError: 'SystemService' object has no attribute >>>> 'snapshots >>>> >>> In the SDK the services are arranged in a tree structure that >>> mimics the >>> URL structure of the API. For example, if you want to get the service >>> that manages a particular snapshot, in the API you would use an URL >>> like >>> this: >>> >>> /ovirt-engine/api/vms/123/snapshots/456 >>> >>> In the Python SDK that translates into this: >>> >>> snap_service = connection.system_service() \ >>> .vms_service() \ >>> .vm_service('123') \ >>> .snapshots_service() \ >>> .snapshot_service('456') >>> >>> There is also a generic "service" method that is useful when you >>> already >>> have all that path as an string: >>> >>> snap_service = connection.service("vms/123/snapshots/456") >>> >>> Both return exactly the same object. The first is usually better when >>> you are calculating the path of the object step by step, and I >>> generally >>> prefer it as it is less error prone. >>> >>> Once you have the reference to the service, you can use the 'remove' >>> method: >>> >>> snap_service.remove() >>> >>> If you need to search by the names of the objects, then you can use >>> the >>> 'search' methods, which are only available for the top level objects, >>> like VM, data centers, clusters, etc. For example, to find your >>> virtual >>> machine and then the snapshot: >>> >>> # Get the root service: >>> system_service = connection.system_service() >>> >>> # Find the virtual machine: >>> vms_service = system_service.vms_service() >>> vm = vms_service.list(search='name=myvm')[0] >>> >>> # Find the snapshot: >>> vm_service = vms_service.vm_service(vm.id) >>> snaps_service = vm_service.snapshots_service() >>> snaps = snaps_service.list() >>> snap = [s for s in snaps where s.description == 'My snap'][0] >> sounds good, thank so much for taking time to explain, but for the last >> entry, I get ; >> >> snap = [s for s in snaps where s.description == 'My snapshot2'][0] >> ^ >> SyntaxError: invalid syntax > I apologize, I wrote that too fast. That is SQL syntax, not Python. In > python should be "if" instead of "where": > > snap = [s for s in snaps if s.description == 'My snapshot2'][0] Thank you, it's ok for now. > >> May I use a version 3 of python? > You SDK supports both Python 2 and Python 3. If you are using the RPMs > make sure to install the 'python3-ovirt-engine-sdk4' package. python3-ovirt-engine-sdk4 doesn't exist in repos, only python-ovirt-engine-sdk4 Thanks to your explanations, I begin to understand the philosophy of this sdk, it's far different from sdk3. What's was wrong with the v3, what was the motivation to write a new version? Will it be possible to use the old sdk3 (manually installed) for old scripts in ovirt 4.2 ? > > Note that both are supported, but Python 3 doesn't get a lot of > attention yet, so you may find issues. If you find any issue with Python > 3 let as know, as we are committed to make it work. > >>> # Remove the snapshot: >>> snap_service = snaps_service.snap_service(snap.id) >>> snap_service.remove() >>> >>>> I saw an example into the ansible [ working ] way to do the same >>>> thing >>>> and I found this : >>>> snapshot = >>>> snapshots_service.snapshot_service(module.params['snapshot_id']).get() >>>> >>>> >>>> How can I get this working with sdk, I mean giving snapshot_id as a >>>> parameter? >>>> >>>> >>>>> Also the complete reference documentation of the Python SDK is >>>>> available >>>>> here: >>>>> >>>>> http://ovirt.github.io/ovirt-engine-sdk/v4.0/4.0.3/index.html >>>>> >>>>> There also SDKs for Ruby and Java, in case Python is not your >>>>> preferred >>>>> language: >>>>> >>>>> Ruby: >>>>> https://github.com/oVirt/ovirt-engine-sdk-ruby/tree/master/sdk >>>>> https://github.com/oVirt/ovirt-engine-sdk-ruby/tree/master/sdk/examples >>>>> >>>>> http://www.rubydoc.info/gems/ovirt-engine-sdk >>>>> >>>>> Java: >>>>> https://github.com/oVirt/ovirt-engine-sdk-java/tree/master/sdk >>>>> >>>>> https://github.com/oVirt/ovirt-engine-sdk-java/tree/master/sdk/src/test/j... >>>>> >>>>> >>>>> >>>>> http://www.javadoc.io/doc/org.ovirt.engine.api/sdk >>>>> >>>>>> -- >>>>>> Nicolas ECARNOT >>>>>> >>>>>> _______________________________________________ >>>>>> Users mailing list >>>>>> Users(a)ovirt.org <mailto:Users@ovirt.org> >>>>>> http://lists.ovirt.org/mailman/listinfo/users >>>>>> <http://lists.ovirt.org/mailman/listinfo/users> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Users mailing list >>>>>> Users(a)ovirt.org >>>>>> http://lists.ovirt.org/mailman/listinfo/users >>>>>> >>>>> _______________________________________________ >>>>> Users mailing list >>>>> Users(a)ovirt.org >>>>> http://lists.ovirt.org/mailman/listinfo/users