def newProvisionedMachineCluster(datastore, endpoint, apiVersion=None):
'''
Set a preprovisioned single-machine cluster. 'endpoint' is the Docker host api endpoint.
'''
try:
info = __obtainDockerHostInfo__(endpoint)
dk = docker.dockerClient(base_url=endpoint, cert_path=settings.DK_DEFAULT_MASTER_CLIENT_CERTS)
# Generate token
token = tokens.newClusterToken(datastore)
# Add to filesystem: for this simple already provisioned machine, only the folder will be created
try:
files.createClusterDir(token)
except os.error:
files.deleteClusterDir(token)
raise errors.OperationError("Couldn't create cluster reference in the filesystem")
# Add to datastore
datastorecluster = {'token':token, 'status':'joining',
'description':'Ready to use', 'numberOfNodes':1, 'type':'swarm',
'nodes':[{'endpoint':endpoint, 'status':'joining'}]}
datastore.addCluster(token, datastorecluster)
docker.createOneNodeSwarm(datastore, token, dk)
return datastorecluster, 200
except errors.ControllerError, e:
return e.getResponse()
def __obtainDockerHostInfo__(endpoint):
# Obtain information about docker daemon listening on endpoint
info = None
try:
dk = docker.dockerClient(base_url=endpoint, cert_path=settings.DK_DEFAULT_MASTER_CLIENT_CERTS)
info = docker.dockerInfo(dk)
except Exception, e:
raise errors.ControllerError("Error while connecting with provided docker host. Endpoint: '"+str(endpoint)+"' exception:"+str(e))
def getDockerInfo(endpoint):
'''
Retrieve docker system information
'''
try:
dk = docker.dockerClient(base_url=endpoint, cert_path=settings.DK_DEFAULT_MASTER_CLIENT_CERTS)
return docker.dockerInfo(dk)
except Exception, e:
aux = errors.ControllerError("Unknown error: "+ e.message)
return aux.getResponse()
def __obtainDockerHostInfo__(endpoint):
# Obtain information about docker daemon listening on endpoint
info = None
try:
dk = docker.dockerClient(
base_url=endpoint,
cert_path=settings.DK_DEFAULT_MASTER_CLIENT_CERTS)
info = docker.dockerInfo(dk)
except Exception, e:
raise errors.ControllerError(
"Error while connecting with provided docker host. Endpoint: '" +
str(endpoint) + "' exception:" + str(e))
def newComposition(datastore, composefile, clusterReference):
'''
Saves docker compose file and runs it.
'''
cluster = None
try:
token = tokens.newCompositionToken(datastore)
# retrieve cluster information from datastore
cluster = datastore.getCluster(clusterReference)
if cluster == None:
raise errors.ControllerError("Cluster does not exist.")
# Check docker
endpoint = cluster['nodes'][0]['endpoint']
dk = docker.dockerClient(endpoint,
settings.DK_DEFAULT_MASTER_CLIENT_CERTS)
dockercheck = docker.checkDocker(dk)
if dockercheck is not True:
raise errors.ControllerError("Error in cluster. Docker error: " +
dockercheck)
# Create composition in datastore
datastorecomposition = {
'token': token,
'cluster': clusterReference,
'status': 'providing',
'description': 'Providing data'
}
datastore.addComposition(token, datastorecomposition)
# Save compose file
try:
files.saveComposeFile(token, composefile)
except os.error:
files.deleteComposeFile(token)
datastore.delComposition(token)
raise errors.OperationError(
"Couldn't create composition in the filesystem")
# Launch composition
docker.runComposition(datastore, token, dk=dk)
return datastorecomposition
except dataStore.DataStoreError, e:
aux = errors.ControllerError("Runtime error: " + e.message)
return aux.getResponse()
def newComposition(datastore, composefile, clusterReference=''):
'''
Saves docker compose file and runs it.
'''
cluster = None
try:
token = tokens.newCompositionToken(datastore)
# retrieve cluster information from datastore
cluster = datastore.getCluster(clusterReference)
if cluster == None:
raise errors.NotFoundError("Cluster does not exist.")
# Check docker
endpoint = cluster['nodes'][0]['endpoint']
dk = docker.dockerClient(endpoint, settings.DK_DEFAULT_MASTER_CLIENT_CERTS)
dockercheck = docker.checkDocker(dk)
if dockercheck is not True:
raise errors.ControllerError("Error in cluster. Docker error: " + dockercheck)
# Create composition in datastore
datastorecomposition = {'token':token, 'cluster':clusterReference, 'status':'providing', 'description':'Providing data'}
datastore.addComposition(token, datastorecomposition)
# Save compose file
try:
files.saveComposeFile(token, composefile)
except os.error:
files.deleteComposeFile(token)
datastore.delComposition(token)
raise errors.OperationError("Couldn't create composition in the filesystem")
# Launch composition
if(clusterReference==''):
docker.runComposition(datastore, token)
else:
docker.runComposition(datastore, token, dockerClient=cluster['endpoint'])
return datastorecomposition
except dataStore.DataStoreError, e:
aux = errors.ControllerError("Runtime error: "+ e.message)
return aux.getResponse()
def newProvisionedMachineCluster(datastore, endpoint, apiVersion=None):
'''
Set a preprovisioned single-machine cluster. 'endpoint' is the Docker host api endpoint.
'''
try:
info = __obtainDockerHostInfo__(endpoint)
dk = docker.dockerClient(
base_url=endpoint,
cert_path=settings.DK_DEFAULT_MASTER_CLIENT_CERTS)
# Generate token
token = tokens.newClusterToken(datastore)
# Add to filesystem: for this simple already provisioned machine, only the folder will be created
try:
files.createClusterDir(token)
except os.error:
files.deleteClusterDir(token)
raise errors.OperationError(
"Couldn't create cluster reference in the filesystem")
# Add to datastore
datastorecluster = {
'token': token,
'status': 'joining',
'description': 'Ready to use',
'numberOfNodes': 1,
'type': 'swarm',
'nodes': [{
'endpoint': endpoint,
'status': 'joining'
}]
}
datastore.addCluster(token, datastorecluster)
docker.createOneNodeSwarm(datastore, token, dk)
return datastorecluster, 200
except errors.ControllerError, e:
return e.getResponse()
