[#6] - Adding in NiFi installer function (#14)

NiFi can now be installed as an ambari service via `service_installer.install_nifi`

conf/service-installer.conf

@@ -1,12 +1,18 @@
 [SERVICES]
-service-names=["ZEPPELIN"]
+service-names=["ZEPPELIN", "NIFI"]
 
 
 [ZEPPELIN]
 install-commands=[ "hdp-select status hadoop-client | sed 's/hadoop-client - \\([0-9]\\.[0-9]\\).*/\\1/'", "cp -r ../ambari-services/ambari-zeppelin-service /var/lib/ambari-server/resources/stacks/HDP/$VERSION/services/ZEPPELIN", "ambari-server restart"]
 server=localhost
 port=9995
 
+
+[NIFI]
+install-commands=[ "hdp-select status hadoop-client | sed 's/hadoop-client - \\([0-9]\\.[0-9]\\).*/\\1/'", "rm -rf /var/lib/ambari-server/resources/stacks/HDP/$VERSION/services/NIFI", "cp -r ../ambari-services/ambari-nifi-service /var/lib/ambari-server/resources/stacks/HDP/$VERSION/services/NIFI", "ambari-server restart"]
+server=localhost
+port=9090
+
 # Repo Links for HDP-SELECT
 [HDP-SELECT]
 ubuntu12="http://public-repo-1.hortonworks.com/HDP/ubuntu12/2.x/updates/2.4.2.0/pool/main/h/hdp-select/hdp-select_2.4.2.0-258_all.deb"

scripts/service_installer.py

@@ -71,7 +71,6 @@ def is_ambari_installed():
 		return True
 
 
-
 def install_zeppelin(conf_dir):
 
 	if not conf_dir.endswith('/'):
@@ -126,6 +125,65 @@ def install_zeppelin(conf_dir):
 	elif cont == 'y':
 		return True
 
+
+
+def install_nifi(conf_dir):
+
+	if not conf_dir.endswith('/'):
+		conf_dir += '/'
+
+	if not is_ambari_installed():
+		raise EnvironmentError('You must install the demo on the same node as the Ambari server. Install Ambari here or move to another node with Ambari installed before continuing')
+
+
+	if not is_hdp_select_installed():
+		installed = install_hdp_select()
+		if not installed:
+			raise EnvironmentError('hdp-select could not be installed. Please install it manually and then re-run the setup.')
+
+	conf = config.read_config(conf_dir + 'service-installer.conf')
+	cmds = json.loads(conf['NIFI']['install-commands'])
+
+	sh = Shell()
+#	print(sh.run('pwd')[0])
+	version = sh.run(cmds[0])
+#	print("HDP-VERSION: " + str(version[0]))
+	fixed_copy = cmds[2].replace('$VERSION', str(version[0])).replace('\n', '')
+#	print('FIXED COPY COMMAND: ' + fixed_cmd)
+	fixed_remove = cmds[1].replace('$VERSION', str(version[0])).replace('\n', '')
+	remove = sh.run(fixed_remove)
+	copy = sh.run(fixed_copy)
+#	print("COPY OUTPUT: " + copy[0])
+	restart = sh.run(cmds[3])
+#	print("Restart output: " + restart[0])
+
+
+	print("Please open the Ambari Interface and manually deploy the NiFi Service.")
+	raw_input("Press enter twice to continue...")
+	raw_input("Press enter once to continue...")
+
+#	 We've copied the necessary files. Once that completes we need to add it to Ambari
+
+	print('Checking to make sure service is installed')
+	ambari = config.read_config(conf_dir + 'global-config.conf')['AMBARI']
+	installed = check_ambari_service_installed('NIFI', ambari)
+	cont = ''
+	if not installed:
+		print('Unable to contact Ambari Server. Unsure whether or not Zeppelin was installed')
+		while not (cont == 'y' or cont == 'n'):
+			cont = raw_input('Continue attempt to set up NiFi for demo?(y/n)')
+			if not (cont == 'y' or cont == 'n'):
+				print('Please enter "y" or "n"')
+	else:
+		cont = 'y'
+
+	if cont == 'n':
+		return False
+	elif cont == 'y':
+		return True
+
+
+
 def check_ambari_service_installed(service_name, ambari_config):
 
 	curl = CurlClient(username=ambari_config['username'], password=ambari_config['password'], port=ambari_config['port'], server=ambari_config['server'], proto=ambari_config['proto'])

tests/test_service_installer.py

@@ -168,7 +168,53 @@ def test_ambari_check_false(self, mock, mock2):
 	def test_ambari_check_many_attempts(self, mock, mock2):
 		conf = scripts.config.read_config('../conf/global-config.conf')['AMBARI']
 		assert service_installer.check_ambari_service_installed('ZEPPELIN', conf) == False
+
+
+class TestNiFiInstall(unittest.TestCase):
+
+	@mock.patch('scripts.service_installer.is_ambari_installed', return_value=False)
+	def test_nifi_ambari_bad(self, mock):
+		try:
+			service_installer.install_nifi('../conf/')
+			self.fail('Cannot continue installation without Ambari')
+		except EnvironmentError as e:
+			assert str(e.message) == 'You must install the demo on the same node as the Ambari server. Install Ambari here or move to another node with Ambari installed before continuing'
+
+	@mock.patch('scripts.service_installer.is_ambari_installed', return_value=True)
+	@mock.patch('scripts.service_installer.is_hdp_select_installed', return_value=False)
+	@mock.patch('scripts.service_installer.install_hdp_select', return_value=False)
+	def test_nifi_ambari_good(self, mock, mock2, mock3): #Also HDP select bad
+		try:
+			service_installer.install_nifi('../conf')
+			self.fail('Cannot continue installation without hdp-select')
+		except EnvironmentError as e:
+			assert str(e.message) == 'hdp-select could not be installed. Please install it manually and then re-run the setup.'
+
+	@mock.patch('scripts.service_installer.is_ambari_installed', return_value=True)
+	@mock.patch('scripts.service_installer.is_hdp_select_installed', return_value=True)
+	@mock.patch('scripts.service_installer.install_hdp_select', return_value=True)
+	@mock.patch('scripts.service_installer.check_ambari_service_installed', return_value=True)
+	@mock.patch('__builtin__.raw_input', return_value='y')
+	def test_nifi_check_is_good(self, mock, mock2, mock3, mock4, mock5):
+			assert service_installer.install_nifi('../conf') == True
+
+
+	@mock.patch('scripts.service_installer.is_ambari_installed', return_value=True)
+	@mock.patch('scripts.service_installer.is_hdp_select_installed', return_value=True)
+	@mock.patch('scripts.service_installer.install_hdp_select', return_value=True)
+	@mock.patch('scripts.service_installer.check_ambari_service_installed', return_value=False)
+	@mock.patch('__builtin__.raw_input', side_effect=['\n', '\n', 'v', 'y'])
+	def test_nifi_no_ambari_contact_continue(self, mock, mock2, mock3, mock4, mock5):
+			assert service_installer.install_nifi('../conf') == True
+
 
+	@mock.patch('scripts.service_installer.is_ambari_installed', return_value=True)
+	@mock.patch('scripts.service_installer.is_hdp_select_installed', return_value=True)
+	@mock.patch('scripts.service_installer.install_hdp_select', return_value=True)
+	@mock.patch('scripts.service_installer.check_ambari_service_installed', return_value=False)
+	@mock.patch('__builtin__.raw_input', side_effect=['\n', '\n', 'v', 'n'])
+	def test_nifi_no_ambari_contact_no_continue(self, mock, mock2, mock3, mock4, mock5):
+			assert service_installer.install_nifi('../conf') == False