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config_manager.py
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config_manager.py
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#!/usr/bin/env python
'''
Copyright (C) Yadu Nand B <yadudoc1729@gmail.com> - All Rights Reserved
Unauthorized copying of this file, via any medium is strictly prohibited
Proprietary and confidential
Written by Yadu Nand B <yadudoc1729@gmail.com>, September 2015
'''
import os
import logging
import bottle
import requests
import time
from boto.dynamodb2.fields import HashKey
from boto.dynamodb2.table import Table
import boto.dynamodb2 as ddb
import boto.ec2
import boto.sqs
import boto.sns
import boto.ses
import boto.ec2.autoscale
from bottle import app, template
from boto.s3.connection import S3Connection
from datetime import datetime
from datetime import date
from dateutil.relativedelta import relativedelta
log_levels = { "DEBUG" : logging.DEBUG,
"INFO" : logging.INFO,
"WARNING" : logging.WARNING,
"ERROR" : logging.ERROR,
"CRITICAL": logging.CRITICAL
}
# Returns true if the credentials were updated
def update_creds_from_metadata_server(app):
#Todo error check for timeout errors from http access
#TOdo error catch for json decode failure
if "keys.expiry" in app.config and app.config["keys.expiry"] > (datetime.now() + relativedelta(hours=1)):
logging.debug("Update creds from metadata cancelled {0} < {1}".format(
app.config["keys.expiry"],
datetime.now()))
return False
URL = app.config["metadata.credurl"]
role = requests.get(URL).content
URL = URL + role
data = requests.get(URL).json()
app.config["keys.expiry"] = datetime.strptime(str(data['Expiration']), '%Y-%m-%dT%H:%M:%SZ')
app.config["keys.key_id"] = str(data['AccessKeyId'])
app.config["keys.key_secret"] = str(data['SecretAccessKey'])
app.config["keys.key_token"] = str(data['Token'])
URL = app.config["metadata.metaserver"]
data = requests.get(URL+"instance-id").text
app.config["instance_id"] = str(data)
URL = app.config["metadata.metaserver"]
data = requests.get(URL+"instance-type").text
app.config["instance_type"] = str(data)
URL = app.config["metadata.metaserver"]
data = requests.get(URL+"placement/availability-zone/").text
app.config["region"] = str(data)
URL = app.config["metadata.metaidentity"]
data = requests.get(URL).json()
app.config["identity"] = data
if "doReload" in app.config and app.config["doReload"] == True:
init(app)
return True
##################################################################
# Annoy human with email
##################################################################
def send_success_mail(data, app):
sesconn = app.config['ses.conn']
job_id = data.get('job_id')
rec_email = data.get('user_email')
rec_name = data.get('username')
src_email = app.config['ses.email_sender']
url = app.config['server.url']
body = template('./templates/completion_email.tpl',
username=rec_name,
job_id=job_id,
url=url)
try:
st = sesconn.send_email(src_email,
"[Turing] Your Job has completed",
body,
[rec_email])
except Exception as e:
return False
return True
##################################################################
# Verify and add user to email list
##################################################################
def verify_email(app, email):
sesconn = app.config['ses.conn']
st = sesconn.verify_email_address(email)
print st
return st
##################################################################
# Send condolences for job failure
##################################################################
def send_failure_mail(data, app):
sesconn = app.config['ses.conn']
job_id = data.get('job_id')
rec_email = data.get('user_email')
rec_name = data.get('username')
src_email = app.config['ses.email_sender']
url = app.config['server.url']
body = template('./templates/failure_email.tpl',
username=rec_name,
job_id=job_id,
url=url)
try:
st = sesconn.send_email(src_email,
"[Turing] Your Job has failed",
body,
[rec_email])
except Exception, e:
return False
return True
def init(app):
ec2 = boto.ec2.connect_to_region(app.config["identity"]['region'],
aws_access_key_id=app.config['keys.key_id'],
aws_secret_access_key=app.config['keys.key_secret'],
security_token=app.config['keys.key_token'])
#print "instance id : ", app.config["instance_id"]
# Get meta tags
reservation = ec2.get_all_instances(instance_ids=app.config["instance_id"])
meta_tags = {}
if reservation :
for tag in reservation[0].instances[0].tags:
meta_tags[str(tag)] = str(reservation[0].instances[0].tags[tag])
#print str(tag), str(reservation[0].instances[0].tags[tag])
#meta_tags = {}
#for tag in ec2.get_all_tags():
# meta_tags[str(tag.name)] = str(tag.value)
# Log the metadata tags
app.config["instance.tags"] = meta_tags
for k in meta_tags:
logging.debug("[TAGS] {0} : {1}".format(k, meta_tags[k]))
sqs = boto.sqs.connect_to_region(app.config["identity"]['region'],
aws_access_key_id=app.config['keys.key_id'],
aws_secret_access_key=app.config['keys.key_secret'],
security_token=app.config['keys.key_token'])
sns = boto.sns.connect_to_region(app.config["identity"]['region'],
aws_access_key_id=app.config['keys.key_id'],
aws_secret_access_key=app.config['keys.key_secret'],
security_token=app.config['keys.key_token'])
ses = boto.ses.connect_to_region(app.config["identity"]['region'],
aws_access_key_id=app.config['keys.key_id'],
aws_secret_access_key=app.config['keys.key_secret'],
security_token=app.config['keys.key_token'])
scale= boto.ec2.autoscale.AutoScaleConnection(aws_access_key_id=app.config['keys.key_id'],
aws_secret_access_key=app.config['keys.key_secret'],
security_token=app.config['keys.key_token'])
s3 = S3Connection(aws_access_key_id=app.config['keys.key_id'],
aws_secret_access_key=app.config['keys.key_secret'],
security_token=app.config['keys.key_token'])
dyno = Table(app.config["instance.tags"]["DynamoDBTableName"],#app.config['dynamodb.table_name'],
schema=[HashKey("job_id")],
connection=ddb.connect_to_region(app.config['dynamodb.region'],
aws_access_key_id=app.config['keys.key_id'],
aws_secret_access_key=app.config['keys.key_secret'],
security_token=app.config['keys.key_token']))
app.config["ec2.conn"] = ec2
app.config["sns.conn"] = sns
app.config["sqs.conn"] = sqs
app.config["ses.conn"] = ses
app.config["s3.conn"] = s3
app.config["scale.conn"]= scale
app.config["dyno.conn"] = dyno
app.config["doReload"] = True
return app
def connect_to_dynamodb(app):
stat = update_creds_from_metadata_server(app)
# If an entry exists for the table and the credentials have
# not been updated then skip the connection
if "dynamodb.table" in app.config and not stat:
return app
dbconn = ddb.connect_to_region(app.config['dynamodb.region'],
aws_access_key_id=app.config['keys.key_id'],
aws_secret_access_key=app.config['keys.key_secret'],
security_token=app.config['keys.key_token'])
dyno = Table(app.config["instance.tags"]["DynamoDBTableName"], #app.config['dynamodb.table_name'],
schema=[HashKey("CustomerUUID")],
connection=dbconn)
app.config["dynamodb.table"] = dyno
return app
def load_configs(filename):
app = bottle.default_app()
try:
app.config.load_config(filename)
except Exception as e:
logging.error("Exception {0} in load_config".format(e))
exit(-1)
logging.debug("Config : \n {0}".format(app.config))
for keys in app.config:
if keys.startswith('keys.'):
print keys
keyfile = app.config[keys].replace('\"', '')
logging.debug("Keyfile : {0}".format(keyfile.replace('\"', '')))
if not os.path.isfile(keyfile):
print "Key file {0} missing!".format(keyfile)
logging.error("Key file {0} missing!".format(keyfile))
exit(-1)
with open(keyfile, 'r') as kf:
ks = kf.readlines()
sp = ks[1].split(',')
app.config[keys] = kf.read()
app.config["keys.key_id"] = sp[1]
app.config["keys.key_secret"] = sp[2]
app.config["keys.key_token"] = ''
#print "keys : ", app.config[keys]
if 'metadata.credurl' in app.config:
update_creds_from_metadata_server(app)
init(app)
return app