/
handlers.py
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/
handlers.py
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from multiprocessing import Process
from sys import stderr
from threading import Thread
from tornado import gen
from utils import ssh
import os
import spark_ec2
import subprocess
import sys
import time
import tornado.web
import utils
from slacker import adisp
from slacker import Slacker
from slacker.workers import ThreadWorker
instance_types = ["m1.small", "m1.medium", "m1.large", "m1.xlarge", "m3.xlarge", "m3.2xlarge", "t1.micro", "m2.xlarge", "m2.2xlarge", "m2.4xlarge", "c1.medium", "c1.xlarge", "cc2.8xlarge", "cr1.8xlarge", "cg1.4xlarge", "hi1.4xlarge", "hs1.8xlarge"]
class NewClusterHandler(tornado.web.RequestHandler):
def get(self):
try:
conn = utils.get_ec2_conn(self)
key_pairs = conn.get_all_key_pairs()
self.render('new_cluster.html', error_msg=None, key_pairs=key_pairs, instance_types=instance_types)
except Exception as e:
print >> stderr, (e)
self.render('error.html', error_msg=str(e))
def post(self):
try:
cluster_name = self.get_argument("cluster_name", "")
if (cluster_name == ""):
return self.render('error.html', error_msg="Cluster name is empty!")
conn = utils.get_ec2_conn(self)
(master_nodes, slave_nodes, zoo_nodes) = utils.get_existing_cluster(conn, cluster_name)
if len(master_nodes) > 0:
return self.render('error.html', error_msg="Cluster name is already existed!")
num_slave = self.get_argument("num_slave", "2")
key_pair = self.get_argument("key_pair", "")
instance_type = self.get_argument("instance_type", "m1.small")
master_instance_type = self.get_argument("master_instance_type", "m1.small")
zone = self.get_argument("zone", "us-east-1e")
ebs_vol_size = self.get_argument("ebs_vol_size", "10")
swap = self.get_argument("swap", "1024")
cluster_type = self.get_argument("cluster_type", "mesos")
(AWS_ACCESS_KEY, AWS_SECRET_KEY) = utils.get_aws_credentials()
os.environ['AWS_ACCESS_KEY_ID'] = AWS_ACCESS_KEY
os.environ['AWS_SECRET_ACCESS_KEY'] = AWS_SECRET_KEY
key_pair_file = os.getcwd() + "/keys/" + key_pair + ".pem"
sys.argv = ["spark_ec2.py", "-s", num_slave, "-u", "root", "-k", key_pair, "-i", key_pair_file, "-t", instance_type, "-m", master_instance_type, "-r", "us-east-1", "-z" , zone, "--ebs-vol-size=" + ebs_vol_size, "--swap=" + swap, "--cluster-type=" + cluster_type, "launch", cluster_name]
t = Thread(target=spark_ec2.main, args=())
t.daemon = True
t.start()
self.render('notice.html', identity_file=key_pair_file)
except Exception as e:
print >> stderr, (e)
self.render('error.html', error_msg=str(e))
class HomeHandler(tornado.web.RequestHandler):
def get(self):
try:
conn = utils.get_ec2_conn(self)
(cluster_names, dict_masters, dict_slaves) = utils.detect_existing_clusters(conn)
self.render('home.html', error_msg=None, cluster_names=cluster_names, dict_masters=dict_masters, dict_slaves=dict_slaves)
except Exception as e:
print >> stderr, (e)
self.render('error.html', error_msg=str(e))
class ClusterHandler(tornado.web.RequestHandler):
def get(self, cluster_name):
try:
conn = utils.get_ec2_conn(self)
(master_nodes, slave_nodes, zoo_nodes) = utils.get_existing_cluster(conn, cluster_name)
services = ["mesos", "shark", "ganglia", "ephemeral_hdfs", "persistent_hdfs", "hadoop_mapreduce"]
service_names = {"mesos" : "Mesos", "shark" : "Shark", "ganglia": "Ganglia", "ephemeral_hdfs": "Ephemeral HDFS", "persistent_hdfs": "Persistent HDFS", "hadoop_mapreduce": "Hadoop MapReduce"}
service_ports = {"mesos" : 8080, "shark" : 10000, "ganglia": 5080, "ephemeral_hdfs": 50070, "persistent_hdfs": 60070, "hadoop_mapreduce": 50030}
service_links = {"mesos" : "http://" + master_nodes[0].public_dns_name + ":8080", "shark": "/sql_console?server=" + master_nodes[0].public_dns_name, "ganglia": "http://" + master_nodes[0].public_dns_name + ":5080/ganglia", "ephemeral_hdfs": "http://" + master_nodes[0].public_dns_name + ":50070", "persistent_hdfs": "http://" + master_nodes[0].public_dns_name + ":60070", "hadoop_mapreduce": "http://" + master_nodes[0].public_dns_name + ":50030"}
service_statuses = {}
if len(master_nodes) > 0:
dns = master_nodes[0].public_dns_name
for service in services:
port = service_ports[service]
service_statuses[service] = utils.isOpen(dns, port)
if service == "shark" and service_statuses[service]:
service_names[service] = "Shark (SQL Console)"
self.render('cluster.html', error_msg=None, cluster_name=cluster_name, master_nodes=master_nodes, slave_nodes=slave_nodes, services=services, service_names=service_names, service_statuses=service_statuses, service_links=service_links)
except Exception as e:
print >> stderr, (e)
self.render('error.html', error_msg=str(e))
class AboutHandler(tornado.web.RequestHandler):
def get(self):
self.render('about.html')
class SettingsHandler(tornado.web.RequestHandler):
def get(self):
(AWS_ACCESS_KEY, AWS_SECRET_KEY) = utils.get_aws_credentials()
self.render('settings.html', AWS_ACCESS_KEY=AWS_ACCESS_KEY, AWS_SECRET_KEY=AWS_SECRET_KEY, error_code= -1)
def post(self):
AWS_ACCESS_KEY = self.get_argument("AWS_ACCESS_KEY", "")
AWS_SECRET_KEY = self.get_argument("AWS_SECRET_KEY", "")
if AWS_ACCESS_KEY == "" or AWS_SECRET_KEY == "":
error_code = 1
error_msg = "Please fill in both Access key and Secret key!"
else:
error_code = 0
error_msg = "Update successfully!"
utils.save_aws_credentials(AWS_ACCESS_KEY, AWS_SECRET_KEY)
self.render('settings.html', AWS_ACCESS_KEY=AWS_ACCESS_KEY, AWS_SECRET_KEY=AWS_SECRET_KEY, error_code=error_code, error_msg=error_msg)
async_execute_sql = Slacker(utils.executeSql, ThreadWorker())
class SqlConsoleHandler(tornado.web.RequestHandler):
def get(self):
try:
self.render('sql_console.html', error_msg=None, code="show tables", server=self.get_argument("server", "localhost"), result="")
except Exception as e:
print >> stderr, (e)
self.render('error.html', error_msg=str(e))
@tornado.web.asynchronous
@adisp.process
def post(self):
try:
server = self.get_argument("server", "localhost")
code = self.get_argument("code", "")
result = yield async_execute_sql(server, code)
self.render('sql_console.html', error_msg=None, code=code, server=server, result=result)
except Exception as e:
print >> stderr, (e)
self.render('error.html', error_msg=str(e))
async_ssh = Slacker(ssh, ThreadWorker())
class ActionHandler(tornado.web.RequestHandler):
@tornado.web.asynchronous
@adisp.process
def get(self):
try:
cluster_name = self.get_argument("cluster_name", "")
dns = self.get_argument("dns", "")
service = self.get_argument("service", "")
action = self.get_argument("action", "")
key_pair = self.get_argument("key_pair", "")
key_pair_file = os.getcwd() + "/keys/" + key_pair + ".pem"
# Execute action
if service == "mesos":
if action == "start":
yield async_ssh(key_pair_file, dns, "spark-ec2/mesos/start-mesos")
elif action == "stop":
yield async_ssh(key_pair_file, dns, "spark-ec2/mesos/stop-mesos")
elif action == "restart":
yield async_ssh(key_pair_file, dns, "spark-ec2/mesos/stop-mesos && spark-ec2/mesos/start-mesos")
elif service == "shark":
if action == "start":
command = (("rsync --ignore-existing -rv -e 'ssh -o StrictHostKeyChecking=no -i %s' " +
"'%s/' 'root@%s:/root/shark-0.2/conf'") % (key_pair_file, 'deploy.shark', dns))
subprocess.check_call(command, shell=True)
yield async_ssh(key_pair_file, dns, "nohup ~/shark-0.2/bin/shark --service sharkserver >/dev/null &")
time.sleep(2) # Wait for Shark to restart
elif action == "stop":
yield async_ssh(key_pair_file, dns, "ps ax|grep shark.SharkServer|awk \"{print $1}\"|xargs kill")
elif action == "restart":
yield async_ssh(key_pair_file, dns, "ps ax|grep shark.SharkServer|awk '{print $1}'|xargs kill && nohup ~/shark-0.2/bin/shark --service sharkserver >/dev/null &")
time.sleep(2) # Wait for Shark to restart
elif service == "ganglia":
if action == "start":
yield async_ssh(key_pair_file, dns, "/etc/init.d/gmetad start && /etc/init.d/httpd start")
elif action == "stop":
yield async_ssh(key_pair_file, dns, "/etc/init.d/gmetad stop && /etc/init.d/httpd stop")
elif action == "restart":
yield async_ssh(key_pair_file, dns, "/etc/init.d/gmetad restart && /etc/init.d/httpd restart")
elif service == "ephemeral_hdfs":
if action == "start":
yield async_ssh(key_pair_file, dns, "~/ephemeral-hdfs/bin/start-dfs.sh")
elif action == "stop":
yield async_ssh(key_pair_file, dns, "~/ephemeral-hdfs/bin/stop-dfs.sh")
elif action == "restart":
yield async_ssh(key_pair_file, dns, "~/ephemeral-hdfs/bin/stop-dfs.sh && ~/ephemeral-hdfs/bin/start-dfs.sh")
elif service == "persistent_hdfs":
if action == "start":
yield async_ssh(key_pair_file, dns, "~/persistent-hdfs/bin/start-dfs.sh")
elif action == "stop":
yield async_ssh(key_pair_file, dns, "~/persistent-hdfs/bin/stop-dfs.sh")
elif action == "restart":
yield async_ssh(key_pair_file, dns, "~/persistent-hdfs/bin/stop-dfs.sh && ~/persistent-hdfs/bin/start-dfs.sh")
elif service == "hadoop_mapreduce":
if action == "start":
yield async_ssh(key_pair_file, dns, "~/ephemeral-hdfs/bin/start-mapred.sh")
elif action == "stop":
yield async_ssh(key_pair_file, dns, "~/ephemeral-hdfs/bin/stop-mapred.sh")
elif action == "restart":
yield async_ssh(key_pair_file, dns, "~/ephemeral-hdfs/bin/stop-mapred.sh && ~/ephemeral-hdfs/bin/start-mapred.sh")
elif service == "cluster":
if action == "start":
(AWS_ACCESS_KEY, AWS_SECRET_KEY) = utils.get_aws_credentials()
os.environ['AWS_ACCESS_KEY_ID'] = AWS_ACCESS_KEY
os.environ['AWS_SECRET_ACCESS_KEY'] = AWS_SECRET_KEY
sys.argv = ["spark_ec2.py", "-u", "root", "-k", key_pair, "-i", key_pair_file, "start", cluster_name]
t = Thread(target=spark_ec2.main, args=())
t.daemon = True
t.start()
self.render('notice.html', identity_file=key_pair_file)
return
elif action == "stop":
conn = utils.get_ec2_conn(self)
(master_nodes, slave_nodes, zoo_nodes) = utils.get_existing_cluster(conn, cluster_name)
for inst in master_nodes:
if inst.state not in ["shutting-down", "terminated"]:
inst.stop()
print "Stopping slaves..."
for inst in slave_nodes:
if inst.state not in ["shutting-down", "terminated"]:
inst.stop()
if zoo_nodes != []:
print "Stopping zoo..."
for inst in zoo_nodes:
if inst.state not in ["shutting-down", "terminated"]:
inst.stop()
time.sleep(1)
self.redirect("/")
return
elif action == "terminate":
conn = utils.get_ec2_conn(self)
(master_nodes, slave_nodes, zoo_nodes) = utils.get_existing_cluster(conn, cluster_name)
for inst in master_nodes:
inst.terminate()
for inst in slave_nodes:
inst.terminate()
if zoo_nodes != []:
for inst in zoo_nodes:
inst.terminate()
time.sleep(1)
self.redirect("/")
return
time.sleep(1)
self.redirect("/cluster/" + cluster_name)
except Exception as e:
# print >> stderr, (e)
self.render('error.html', error_msg=str(e))