GitLab

* Add a function logic/utils.py to check the length of a string and
raise an API fault with the corresponding message.
* Check the length of the name of servers/ports/networks/subnets

Add 'name' attribute to newly created NICs. Currently, the name of the
NICs will not be used to refer to NICs, as it will be in Synnefo 0.15.
Names are added only to ease the migration to version 0.15. Also, this
commit updates snf-dispatcher to preserve the name of the NIC, if any,
when updating instance NICs.

Finally, the commit updates handling of firewall tags by adding a second
tag that contains the name of the NIC. The tags with the name of the
NICs will be kept in Synnefo 0.15, and the old tags with the index of
the NIC will be removed.

Parse the fields of the Ganeti command, to distinquish between
'CONNECT' and 'DISCONNECT' in case of 'OP_INSTANCE_SET_PARAMS'.

Callback functions of snf-dispatcher updated the NICs of a VM by
deleting all NICs from DB, and creating the new NICs that were described
in the message. However, since NICs have UUIDs, this is no longer
required. This commit update callbacks to update the NICs based on their
UUID.

Major refactor to cyclades api and logic apps that removes most code
from the api views and moves it to logic app, so that the same logic
code can be used by different apps (e.g. EC2 API). Code is moved into
logic.servers.

This commit also introduces the VirtualMachine.task attribute
which contains the last issued action to a server. This attribute is set
when the corresponding job is sent to Ganeti, and is cleared upon
completion of the corresponding job (task_job_id attribute). Until the
task is completed, no other action is allowed on the VM. The only
exception is 'DESTROY' action which is always allowed. Actions on VMs
with uncompleted tasks results in a bad request fault.  Also, some
actions are not allowed if the operating state of the VM is not correct.
For example, it is not allowed to start or resize a running VM.  The
running task is also exposed to the API (SNF:task_state), and the
available states are:
* BUILDING
* STARTING
* STOPPING
* REBOOTING
* DESTROYING
* RESIZING
* CONNECTING
* DISCONNECTING

Also, this commit introduces two quotable resources, the 'active_ram'
and 'active_cpu' representing the ram and cpu of running instances,
specifically the instances in 'STARTED', 'BUILD' and 'ERROR' operstate.
In order to count quotas for these resources, commissioning is needed
when starting, stopping and rebooting instances. Also, the destroy
commissioning is different if the vm is running or is stopped.

Finally this commit changes the way commissioning is used in
snf-dispatcher. Until now dispatcher only accepted or rejected
commissions issued by the API. This commit introduces extra logic in
dispatcher, to issue commissions for every quotable change, if a
commission for this change has not already been issued by the API. This
enables the administrator to do whatever action in the Ganeti backend
without resulting in unsynced quotas. If a new commission is required,
the previous commission for the VM by the API (if existing) will be
rejected, since this commission will reflect a different change in the
VM.

Use deepcopy instead of copy, since the dictionary
is nested

Reconcile the contents of each networks IP pool by comparing it
with combination of IP pools of all ganeti backends.

Add extra option for detecting conflicting IPs.

since more than one packages exist in repository root

Instead of importing synnefo.settings directly, import settings from
django.conf as it should.

refs #581

refs #581

Add a draft description of the various services that need to be
running for a working Synnefo installation. Add documentation for ganeti-0mqd,
db_controller and vncauthproxy.

Fix language error in comment in logic/utils.py.

Add improved documentation on how the API state is derived
based on the internal state of the VirtualMachine instance.

Improve handling of server deletions.
 * Have the API return a server's state as DELETED when
   the deleted flag has been set in the VirtualMachine model.
   This makes the server immediately invisible, instead of waiting
   for an indefinite amount of time for the Ganeti backend to remove
   the VM.
 * Set the deleted flag in the VirtualMachine model when Ganeti reports
   successful removal of an instance. This catches instance deletions
   initiated by the admin at the Ganeti backend.

VirtualMachine models has attribute backendjobstatus instead of
_backendjobstatus

This commit fixes some breakage caused by the recent merge of
the logic-refactoring branch, mainly related to db/db_controller.py.

The main reason was the different value of import path, fixed by
making sure all imports are rooted in synnefo.

All db and API tests run properly.

  * Update VirtualMachine reference in all modules
  * Updated fixtures accordingly (and tests)

  * Moved all tests (except one) into the logic app
  * Introduced (again) utils.py, moved miscellaneous functions there
  * models.py has now minimal functionality (ui->logic->db)

  * Moved methods from utils.py -> credits.py to avoid
    circular dependency

  * remove backend_id (now it is inline in the model code)
  * charge now resides in credits.py (logic)
  * logic is now a proper django app
  * remove unused backend_id from handlers.py
  * moved unit tests from db -> logic module