#!/usr/bin/python
#
# Copyright 2014 Huawei Technologies Co. Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Example code to deploy a cluster by compass client api."""
import os
import re
import requests
import sys
import time

from compass.apiclient.restful import Client


COMPASS_SERVER_URL = 'http://127.0.0.1/api'
SWITCH_IP = '10.145.81.220'
SWITCH_SNMP_VERSION = 'v2c'
SWITCH_SNMP_COMMUNITY = 'public'
# MACHINES_TO_ADD = ['00:11:20:30:40:01']
CLUSTER_NAME = 'cluster2'
HOST_NAME_PREFIX = 'host'
SERVER_USERNAME = 'root'
SERVER_PASSWORD = 'root'
SERVICE_USERNAME = 'service'
SERVICE_PASSWORD = 'service'
CONSOLE_USERNAME = 'console'
CONSOLE_PASSWORD = 'console'
HA_VIP = ''
# NAMESERVERS = '192.168.10.6'
SEARCH_PATH = 'ods.com'
# GATEWAY = '192.168.10.6'
# PROXY = 'http://192.168.10.6:3128'
# NTP_SERVER = '192.168.10.6'
MANAGEMENT_IP_START = '192.168.10.130'
MANAGEMENT_IP_END = '192.168.10.254'
MANAGEMENT_IP_GATEWAY = '192.168.10.1'
MANAGEMENT_NETMASK = '255.255.255.0'
MANAGEMENT_NIC = 'eth0'
MANAGEMENT_PROMISC = 0
TENANT_IP_START = '192.168.10.100'
TENANT_IP_END = '192.168.10.255'
TENANT_IP_GATEWAY = '192.168.10.1'
TENANT_NETMASK = '255.255.255.0'
TENANT_NIC = 'eth0'
TENANT_PROMISC = 0
PUBLIC_IP_START = '12.234.32.100'
PUBLIC_IP_END = '12.234.32.255'
PUBLIC_IP_GATEWAY = '12.234.32.1'
PUBLIC_NETMASK = '255.255.255.0'
PUBLIC_NIC = 'eth1'
PUBLIC_PROMISC = 1
STORAGE_IP_START = '172.16.100.100'
STORAGE_IP_END = '172.16.100.255'
STORAGE_NETMASK = '255.255.255.0'
STORAGE_IP_GATEWAY = '172.16.100.1'
STORAGE_NIC = 'eth0'
STORAGE_PROMISC = 0
HOME_PERCENTAGE = 5
TMP_PERCENTAGE = 5
VAR_PERCENTAGE = 10
# ROLES_LIST = [['os-dashboard']]

PRESET_VALUES = {
    'NAMESERVERS': '192.168.10.1',
    'NTP_SERVER': '192.168.10.1',
    'GATEWAY': '192.168.10.1',
    'PROXY': 'http://192.168.10.1:3128',
    'ROLES_LIST': 'os-dashboard',
    'MACHINES_TO_ADD': '00:11:20:30:40:01',
    'BUILD_TIMEOUT': 60
}
for v in PRESET_VALUES:
    if v in os.environ.keys():
        PRESET_VALUES[v] = os.environ.get(v)
        print (v + PRESET_VALUES[v] + " is set by env variables")
    else:
        print (PRESET_VALUES[v])

# get apiclient object.
client = Client(COMPASS_SERVER_URL)


# get all switches.
status, resp = client.get_switches()
print 'get all switches status: %s resp: %s' % (status, resp)

# add a switch.
status, resp = client.add_switch(
    SWITCH_IP, version=SWITCH_SNMP_VERSION,
    community=SWITCH_SNMP_COMMUNITY)

print 'add a switch status: %s resp: %s' % (status, resp)

if status < 400:
    switch = resp['switch']
else:
    status, resp = client.get_switches()
    print 'get all switches status: %s resp: %s' % (status, resp)
    switch = None
    for switch in resp['switches']:
        if switch['ip'] == SWITCH_IP:
            break

switch_id = switch['id']
switch_ip = switch['ip']


# if the switch is not in under_monitoring, wait for the poll switch task
# update the swich information and change the switch state.
while switch['state'] != 'under_monitoring':
    print 'waiting for the switch into under_monitoring'
    status, resp = client.get_switch(switch_id)
    print 'get switch %s status: %s, resp: %s' % (switch_id, status, resp)
    switch = resp['switch']
    time.sleep(10)


# get machines connected to the switch.
status, resp = client.get_machines(switch_id=switch_id)
print 'get all machines under switch %s status: %s, resp: %s' % (
    switch_id, status, resp)
machines = {}
MACHINES_TO_ADD = PRESET_VALUES['MACHINES_TO_ADD'].split()
for machine in resp['machines']:
    mac = machine['mac']
    if mac in MACHINES_TO_ADD:
        machines[machine['id']] = mac

print 'machine to add: %s' % machines

if set(machines.values()) != set(MACHINES_TO_ADD):
    print 'only found macs %s while expected are %s' % (
        machines.values(), MACHINES_TO_ADD)
    sys.exit(1)


# get adapters.
status, resp = client.get_adapters()
print 'get all adapters status: %s, resp: %s' % (status, resp)
adapter_ids = []
for adapter in resp['adapters']:
    adapter_ids.append(adapter['id'])

adapter_id = adapter_ids[0]
print 'adpater for deploying a cluster: %s' % adapter_id


# add a cluster.
status, resp = client.add_cluster(
    cluster_name=CLUSTER_NAME, adapter_id=adapter_id)
print 'add cluster %s status: %s, resp: %s' % (CLUSTER_NAME, status, resp)
cluster = resp['cluster']
cluster_id = cluster['id']

# add hosts to the cluster.
status, resp = client.add_hosts(
    cluster_id=cluster_id,
    machine_ids=machines.keys())
print 'add hosts to cluster %s status: %s, resp: %s' % (
    cluster_id, status, resp)
host_ids = []
for host in resp['cluster_hosts']:
    host_ids.append(host['id'])

print 'added hosts: %s' % host_ids


# set cluster security
status, resp = client.set_security(
    cluster_id, server_username=SERVER_USERNAME,
    server_password=SERVER_PASSWORD,
    service_username=SERVICE_USERNAME,
    service_password=SERVICE_PASSWORD,
    console_username=CONSOLE_USERNAME,
    console_password=CONSOLE_PASSWORD)
print 'set security config to cluster %s status: %s, resp: %s' % (
    cluster_id, status, resp)


# set cluster networking
status, resp = client.set_networking(
    cluster_id,
    nameservers=PRESET_VALUES["NAMESERVERS"],
    search_path=SEARCH_PATH,
    gateway=PRESET_VALUES["GATEWAY"],
    proxy=PRESET_VALUES["PROXY"],
    ntp_server=PRESET_VALUES["NTP_SERVER"],
    ha_vip=HA_VIP,
    management_ip_start=MANAGEMENT_IP_START,
    management_ip_end=MANAGEMENT_IP_END,
    management_netmask=MANAGEMENT_NETMASK,
    management_nic=MANAGEMENT_NIC,
    management_gateway=MANAGEMENT_IP_GATEWAY,
    management_promisc=MANAGEMENT_PROMISC,
    tenant_ip_start=TENANT_IP_START,
    tenant_ip_end=TENANT_IP_END,
    tenant_netmask=TENANT_NETMASK,
    tenant_nic=TENANT_NIC,
    tenant_gateway=TENANT_IP_GATEWAY,
    tenant_promisc=TENANT_PROMISC,
    public_ip_start=PUBLIC_IP_START,
    public_ip_end=PUBLIC_IP_END,
    public_netmask=PUBLIC_NETMASK,
    public_nic=PUBLIC_NIC,
    public_gateway=PUBLIC_IP_GATEWAY,
    public_promisc=PUBLIC_PROMISC,
    storage_ip_start=STORAGE_IP_START,
    storage_ip_end=STORAGE_IP_END,
    storage_netmask=STORAGE_NETMASK,
    storage_nic=STORAGE_NIC,
    storage_gateway=STORAGE_IP_GATEWAY,
    storage_promisc=STORAGE_PROMISC)
print 'set networking config to cluster %s status: %s, resp: %s' % (
    cluster_id, status, resp)


# set partiton of each host in cluster
status, resp = client.set_partition(
    cluster_id,
    home_percentage=HOME_PERCENTAGE,
    tmp_percentage=TMP_PERCENTAGE,
    var_percentage=VAR_PERCENTAGE)
print 'set partition config to cluster %s status: %s, resp: %s' % (
    cluster_id, status, resp)


# set each host config in cluster.
ROLES_LIST = [PRESET_VALUES['ROLES_LIST'].split()]
for host_id in host_ids:
    if ROLES_LIST:
        roles = ROLES_LIST.pop(0)
    else:
        roles = []
    status, resp = client.update_host_config(
        host_id, hostname='%s%s' % (HOST_NAME_PREFIX, host_id),
        roles=roles)
    print 'set roles to host %s status: %s, resp: %s' % (
        host_id, status, resp)


# deploy cluster.
status, resp = client.deploy_hosts(cluster_id)
print 'deploy cluster %s status: %s, resp: %s' % (cluster_id, status, resp)


# get intalling progress.
BUILD_TIMEOUT = float(PRESET_VALUES['BUILD_TIMEOUT'])
timeout = time.time() + BUILD_TIMEOUT * 60
while True:
    status, resp = client.get_cluster_installing_progress(cluster_id)
    print 'get cluster %s installing progress status: %s, resp: %s' % (
        cluster_id, status, resp)
    progress = resp['progress']
    if (
        progress['state'] not in ['UNINITIALIZED', 'INSTALLING'] or
        progress['percentage'] >= 1.0
    ):
        break
    if (
        time.time() > timeout
    ):
        raise Exception("Timeout! The system is not ready in time.")

    for host_id in host_ids:
        status, resp = client.get_host_installing_progress(host_id)
        print 'get host %s installing progress status: %s, resp: %s' % (
            host_id, status, resp)

    time.sleep(60)


status, resp = client.get_dashboard_links(cluster_id)
print 'get cluster %s dashboardlinks status: %s, resp: %s' % (
    cluster_id, status, resp)
dashboardlinks = resp['dashboardlinks']
if not dashboardlinks.keys():
    raise Exception("Dashboard link is not found!")
for x in dashboardlinks.keys():
    if x in ("os-dashboard", "os-controller"):
        dashboardurl = dashboardlinks.get(x)
        if dashboardurl is None:
            raise Exception("No dashboard link is found")
        r = requests.get(dashboardurl, verify=False)
        r.raise_for_status()
        match = re.search(
            r'(?m)(http://\d+\.\d+\.\d+\.\d+:5000/v2\.0)', r.text)
        if match:
            print 'dashboard login page can be downloaded'
            break
        print (
            'dashboard login page failed to be downloaded\n'
            'the context is:\n%s\n') % r.text
        raise Exception("os-dashboard is not properly installed!")