def collect_operations(self, **options):
model = options.get('model')
backends = options.get('backends') or set()
if backends:
backends = set(backends.split(','))
servers = options.get('servers') or set()
if servers:
servers = set([Server.objects.get(Q(address=server)|Q(name=server)) for server in servers.split(',')])
action = options.get('action')
if not model:
models = set()
if servers:
for server in servers:
if backends:
routes = server.routes.filter(backend__in=backends)
else:
routes = server.routes.all()
elif backends:
routes = Route.objects.filter(backend__in=backends)
else:
raise CommandError("Model or --servers or --backends?")
for route in routes.filter(is_active=True):
model = route.backend_class.model_class()
models.add(model)
querysets = [model.objects.order_by('id') for model in models]
else:
kwargs = {}
for comp in options.get('query', []):
comps = iter(comp.split('='))
for arg in comps:
kwargs[arg] = next(comps).strip().rstrip(',')
model = apps.get_model(*model.split('.'))
queryset = model.objects.filter(**kwargs).order_by('id')
querysets = [queryset]
operations = OrderedSet()
route_cache = {}
for queryset in querysets:
for instance in queryset:
manager.collect(instance, action, operations=operations, route_cache=route_cache)
if backends:
result = []
for operation in operations:
if operation.backend in backends:
result.append(operation)
operations = result
if servers:
routes = []
result = []
for operation in operations:
routes = [route for route in operation.routes if route.host in servers]
operation.routes = routes
if routes:
result.append(operation)
operations = result
return operations
def handle(self, *args, **options):
list_backends = options.get('list_backends')
if list_backends:
for backend in ServiceBackend.get_backends():
self.stdout.write(str(backend).split("'")[1])
return
model = apps.get_model(*options['model'].split('.'))
action = options.get('action')
interactive = options.get('interactive')
servers = options.get('servers')
backends = options.get('backends')
if (servers and not backends) or (not servers and backends):
raise CommandError("--backends and --servers go in tandem.")
dry = options.get('dry')
kwargs = {}
for comp in options.get('query', []):
comps = iter(comp.split('='))
for arg in comps:
kwargs[arg] = next(comps).strip().rstrip(',')
operations = OrderedSet()
route_cache = {}
queryset = model.objects.filter(**kwargs).order_by('id')
if servers:
servers = servers.split(',')
backends = backends.split(',')
server_objects = []
# Get and create missing Servers
for server in servers:
try:
server = Server.objects.get(address=server)
except Server.DoesNotExist:
server = Server(name=server, address=server)
server.full_clean()
server.save()
server_objects.append(server)
# Generate operations for the given backend
for instance in queryset:
for backend in backends:
backend = import_class(backend)
operations.add(Operation(backend, instance, action, servers=server_objects))
else:
for instance in queryset:
manager.collect(instance, action, operations=operations, route_cache=route_cache)
scripts, block = manager.generate(operations)
servers = []
# Print scripts
for key, value in scripts.items():
server, __ = key
backend, operations = value
servers.append(server.name)
self.stdout.write('# Execute on %s' % server.name)
for method, commands in backend.scripts:
script = '\n'.join(commands)
self.stdout.write(script)
if interactive:
context = {
'servers': ', '.join(servers),
}
msg = ("\n\nAre your sure to execute the previous scripts on %(servers)s (yes/no)? " % context)
confirm = input(msg)
while 1:
if confirm not in ('yes', 'no'):
confirm = input('Please enter either "yes" or "no": ')
continue
if confirm == 'no':
return
break
if not dry:
logs = manager.execute(scripts, block=block)
for log in logs:
self.stdout.write(log.stdout)
self.stderr.write(log.stderr)
for log in logs:
self.stdout.write(' '.join((log.backend, log.state)))
def handle(self, *args, **options):
list_backends = options.get('list_backends')
if list_backends:
for backend in ServiceBackend.get_backends():
self.stdout.write(str(backend).split("'")[1])
return
model = apps.get_model(*options['model'].split('.'))
action = options.get('action')
interactive = options.get('interactive')
servers = options.get('servers')
backends = options.get('backends')
if (servers and not backends) or (not servers and backends):
raise CommandError("--backends and --servers go in tandem.")
dry = options.get('dry')
kwargs = {}
for comp in options.get('query', []):
comps = iter(comp.split('='))
for arg in comps:
kwargs[arg] = next(comps).strip().rstrip(',')
operations = OrderedSet()
route_cache = {}
queryset = model.objects.filter(**kwargs).order_by('id')
if servers:
servers = servers.split(',')
backends = backends.split(',')
routes = []
# Get and create missing Servers
for server in servers:
try:
server = Server.objects.get(address=server)
except Server.DoesNotExist:
server = Server(name=server, address=server)
server.full_clean()
server.save()
routes.append(AttrDict(
host=server,
async=False,
action_is_async=lambda self: False,
))
# Generate operations for the given backend
for instance in queryset:
for backend in backends:
backend = import_class(backend)
operations.add(Operation(backend, instance, action, routes=routes))
else:
for instance in queryset:
manager.collect(instance, action, operations=operations, route_cache=route_cache)
scripts, serialize = manager.generate(operations)
servers = []
# Print scripts
for key, value in scripts.items():
route, __, __ = key
backend, operations = value
servers.append(str(route.host))
self.stdout.write('# Execute %s on %s' % (backend.get_name(), route.host))
for method, commands in backend.scripts:
script = '\n'.join(commands)
self.stdout.write(script)
if interactive:
context = {
'servers': ', '.join(servers),
}
if not confirm("\n\nAre your sure to execute the previous scripts on %(servers)s (yes/no)? " % context):
return
if not dry:
logs = manager.execute(scripts, serialize=serialize, async=True)
running = list(logs)
stdout = 0
stderr = 0
while running:
for log in running:
cstdout = len(log.stdout)
cstderr = len(log.stderr)
if cstdout > stdout:
self.stdout.write(log.stdout[stdout:])
stdout = cstdout
if cstderr > stderr:
self.stderr.write(log.stderr[stderr:])
stderr = cstderr
if log.has_finished:
running.remove(log)
time.sleep(0.05)
for log in logs:
self.stdout.write(' '.join((log.backend, log.state)))
def collect_operations(self, **options):
model = options.get('model')
backends = options.get('backends') or set()
if backends:
backends = set(backends.split(','))
servers = options.get('servers') or set()
if servers:
servers = set([
Server.objects.get(Q(address=server) | Q(name=server))
for server in servers.split(',')
])
action = options.get('action')
if not model:
models = set()
if servers:
for server in servers:
if backends:
routes = server.routes.filter(backend__in=backends)
else:
routes = server.routes.all()
elif backends:
routes = Route.objects.filter(backend__in=backends)
else:
raise CommandError("Model or --servers or --backends?")
for route in routes.filter(is_active=True):
model = route.backend_class.model_class()
models.add(model)
querysets = [model.objects.order_by('id') for model in models]
else:
kwargs = {}
for comp in options.get('query', []):
comps = iter(comp.split('='))
for arg in comps:
kwargs[arg] = next(comps).strip().rstrip(',')
model = apps.get_model(*model.split('.'))
queryset = model.objects.filter(**kwargs).order_by('id')
querysets = [queryset]
operations = OrderedSet()
route_cache = {}
for queryset in querysets:
for instance in queryset:
manager.collect(instance,
action,
operations=operations,
route_cache=route_cache)
if backends:
result = []
for operation in operations:
if operation.backend in backends:
result.append(operation)
operations = result
if servers:
routes = []
result = []
for operation in operations:
routes = [
route for route in operation.routes
if route.host in servers
]
operation.routes = routes
if routes:
result.append(operation)
operations = result
return operations
