def getActiveNN(cls, host, component, cluster=None):
if cluster == None:
cluster = 'cl1'
weburl = cls.getweburl(host)
count = 5
length = 1
while count > 0 and length >= 1:
url = "%s/api/v1/clusters/%s/host_components?HostRoles/component_name=%s&metrics/dfs/FSNamesystem/HAState=active" % (
weburl, cluster, component)
auth = HTTPBasicAuth(Ambari.getAdminUsername(),
Ambari.getAdminPassword())
head = {'X-Requested-By': 'ambari', 'Content-Type': 'text/plain'}
response = requests.get(url=url,
headers=head,
auth=auth,
verify=False)
assert response.status_code == 200, "Failed to get config versions."
json = response.json()
items = json['items']
length = len(items)
count = count - 1
time.sleep(10)
last = items[-1]
active_nn = last['HostRoles']['host_name']
return active_nn
def stopComponent(cls, host, component, component_host, cluster=None):
if cluster == None:
cluster = 'cl1'
weburl = cls.getweburl(host)
url = "%s/api/v1/clusters/%s/hosts/%s/host_components/%s" % (
weburl, cluster, component_host, component)
head = {'X-Requested-By': 'ambari', 'Content-Type': 'text/plain'}
data = '{ "HostRoles": { "state": "INSTALLED" } }'
auth = HTTPBasicAuth(Ambari.getAdminUsername(),
Ambari.getAdminPassword())
response = requests.put(url,
data=data,
headers=head,
auth=auth,
verify=False)
assert (response.status_code == 200 or response.status_code == 202
), "Failed to stop component %s on host %s, status=%d" % (
component, host, response.status_code)
if response.status_code is 202:
json_data = json.loads(response._content)
request_id = json_data['Requests']['id']
logger.info("Waiting for the service " + component + " to stop..")
while not cls.get_request_current_state(host, request_id,
cluster) == 'COMPLETED':
if cls.get_request_current_state(host, request_id,
cluster) == 'FAILED':
break
time.sleep(10)
def get_request_current_state(cls, request_id, cluster=None):
if cluster == None:
cluster = 'cl1'
weburl = Ambari.getWebUrl()
url = "%s/api/v1/clusters/%s/requests/%s" % (weburl, cluster, request_id)
auth = HTTPBasicAuth(Ambari.getAdminUsername(), Ambari.getAdminPassword())
head = {'X-Requested-By': 'ambari', 'Content-Type': 'text/plain'}
response = requests.get(url=url, headers=head, auth=auth, verify=False)
json_data = json.loads(response._content)
return json_data['Requests']['request_status']
def start_stop_service(cls, service, state, cluster=None):
if cluster == None:
cluster = 'cl1'
weburl = Ambari.getWebUrl()
url = "%s/api/v1/clusters/%s/services/%s" % (weburl, cluster, service)
auth = HTTPBasicAuth(Ambari.getAdminUsername(), Ambari.getAdminPassword())
head = {'X-Requested-By': 'ambari', 'Content-Type': 'text/plain'}
data = '{"RequestInfo": {"context": "DRUID API ' + state + ' ' + service + '"}, "Body" : {"ServiceInfo": {"state": "' + state + '"}}}'
response = requests.put(url, data=data, headers=head, auth=auth, verify=False)
assert ( response.status_code == 200 or response.status_code == 202 ),\
"Failed to start/stop service %s , status=%d" % ( service, response.status_code )
return response
def setConfig(cls, type, config, cluster=None):
if cluster == None:
cluster = 'cl1'
weburl = Ambari.getWebUrl()
tag = "version-%s" % str(uuid.uuid1())
data = {'Clusters': {'desired_config': {'type': type, 'tag': tag, 'properties': config}}}
json = jsonlib.dumps(data)
url = "%s/api/v1/clusters/%s" % (weburl, cluster)
auth = HTTPBasicAuth(Ambari.getAdminUsername(), Ambari.getAdminPassword())
head = {'X-Requested-By': 'ambari', 'Content-Type': 'text/plain'}
response = requests.put(url=url, headers=head, auth=auth, data=json, verify=False)
assert response.status_code == 200, "Failed to set config."
def getDruidComponentHost(cls, component, service='DRUID', cluster=None):
if cluster == None:
cluster = 'cl1'
host_names = []
url = "%s/api/v1/clusters/%s/services/%s/components/%s" % (Ambari.getWebUrl(), cluster, service, component)
auth = HTTPBasicAuth(Ambari.getAdminUsername(), Ambari.getAdminPassword())
head = {'X-Requested-By': 'ambari', 'Content-Type': 'text/plain'}
response = requests.get(url=url, headers=head, auth=auth, verify=False)
assert response.status_code == 200, "Failed to get config versions."
json = response.json()
host_components = json['host_components']
for i in range(0, len(host_components)):
host_names.append(host_components[i]['HostRoles']['host_name'])
return host_names
def restart_all_services(cls, host, type, cluster=None):
if cluster == None:
cluster = 'cl1'
weburl = cls.getweburl(host)
url = "%s/api/v1/clusters/%s/services" % (weburl, cluster)
auth = HTTPBasicAuth(Ambari.getAdminUsername(),
Ambari.getAdminPassword())
head = {'X-Requested-By': 'ambari', 'Content-Type': 'text/plain'}
response = requests.get(url=url, headers=head, auth=auth, verify=False)
json_data = json.loads(response._content)
for i in range(0, len(json_data['items'])):
service = json_data['items'][i]['ServiceInfo']['service_name']
logger.info("Restarting service : %s " % service)
cls.restart_service(service, host)
def getConfig(cls, type, property_name, cluster=None):
if cluster == None:
cluster = 'cl1'
weburl = Ambari.getWebUrl()
url = "%s/api/v1/clusters/%s/configurations?type=%s" % (weburl, cluster, type)
auth = HTTPBasicAuth(Ambari.getAdminUsername(), Ambari.getAdminPassword())
head = {'X-Requested-By': 'ambari', 'Content-Type': 'text/plain'}
response = requests.get(url=url, headers=head, auth=auth, verify=False)
assert response.status_code == 200, "Failed to get config versions."
json = response.json()
items = json['items']
last = items[len(items) - 1]
tag = last['tag']
url = "%s/api/v1/clusters/%s/configurations?type=%s&tag=%s" % (weburl, cluster, type, tag)
response = requests.get(url=url, headers=head, auth=auth, verify=False)
assert response.status_code == 200, "Failed to get config."
json = response.json()
items = json['items']
last = items[len(items) - 1]
config = last['properties'][property_name]
return config