Class: Owssh

Inherits:
Object
  • Object
show all
Includes:
CommandLineReporter
Defined in:
lib/owssh.rb

Instance Method Summary collapse

Instance Method Details

#get_instances(id) ⇒ Object 



23
24
25
26
27
28
29
30
31
32
33
 
# File 'lib/owssh.rb', line 23

def get_instances(id)
  my_instances = {}
  instances_json = JSON.parse(`aws opsworks describe-instances --stack-id #{id}`)
  instances_json['Instances'].each do |instance|
    pub_ip = instance['ElasticIp'] || instance['PublicIp'] || "DOWN"
    priv_ip = instance['PrivateIp'] || "N/A"
    type = instance['Hostname'].split("-").first
    my_instances[instance['Hostname'].to_s] = { "PUB_IP" => pub_ip.to_s, "PRIV_IP" => priv_ip.to_s, "TYPE" => type }
  end
  my_instances
end

#get_stacks ⇒ Object 



11
12
13
14
15
16
17
18
19
20
21
 
# File 'lib/owssh.rb', line 11

def get_stacks
  my_stacks = {}
  stacks_json = JSON.parse(`aws opsworks describe-stacks`)

  stacks_json['Stacks'].each do |stack|
    if $debug then puts "Stack Name: #{stack['Name'].gsub(' ','_').downcase}     Stack ID: #{stack['StackId']}" end
    stack_name = stack['Name'].gsub(' ','_').downcase
    my_stacks[stack_name.to_s] = stack['StackId']
  end
  my_stacks
end

#owssh ⇒ Object 



69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
 
# File 'lib/owssh.rb', line 69

def owssh
  # Export environment variables for AWS CLI here
  $debug = false
  $ssh_key_file = "~/.ssh/id_rsa_dev"
  $owssh_config = "~/.owssh_conf"

  if ARGV.empty?
    puts "Usage:"
    puts "owssh list - List all environments"
    puts "owssh describe - Show details of hosts in all stacks"
    puts "owssh describe [Stack Name] - Show details of a specific stack"
    puts "owssh [Stack Name] [Hostname] - SSH to a host in a stack"
    puts "owssh [Stack Name] [Hostname] [Command]- SSH to a host in a stack and run a command"
    exit
  end

  $stacks = {}
  $instances = {}

  $stacks = get_stacks

  if ARGV[0] == "list" then
    puts "Getting list of stacks..."
    print_stacks($stacks)
    exit
  elsif ARGV[0] == "describe" && ARGV[1].nil? then
    $stacks.each do |stack_name, id|
      puts "Getting data for Stack: #{stack_name}"
      $instances = get_instances(id)
      print_instances($instances)
    end
    exit
  elsif ARGV[0] == "describe" && !ARGV[1].nil? then
    stack_name = ARGV[1]
    if $stacks.has_key?(ARGV[1].downcase.to_s) then
      if $debug then puts "Stack ID: #{$stacks[stack_name]}" end
      puts "Getting data for Stack: #{stack_name}"
      $instances = get_instances($stacks[stack_name])
      print_instances($instances)
    elsif
      puts "Unable to find stack named '#{ARGV[1]}'"
      exit
    end
  elsif $stacks.has_key?(ARGV[0].downcase.to_s) then
    if ARGV[1].nil? then
      puts "Please enter an instance name. I.E. rails-app3"
      exit
    end
    stack_arg = ARGV[0].downcase
    instances_json = JSON.parse(`aws opsworks describe-instances --stack-id #{$stacks[stack_arg]}`)
    instances_json['Instances'].each do |instance|
      $instances["#{instance["Hostname"]}"] = instance["PublicIp"]
    end
    if $instances.has_key?(ARGV[1]) then
      if ARGV[2].nil? then
        puts "Opening connection to #{ARGV[1]}..."
        exec("ssh -i ~/.ssh/id_rsa_dev ubuntu@#{$instances[ARGV[1].to_s]}")
      else
        puts "Running comand #{ARGV[2]} on host #{ARGV[1]}..."
        exec("ssh -i ~/.ssh/id_rsa_dev ubuntu@#{$instances[ARGV[1].to_s]} '#{ARGV[2]}'")
      end
    else
      puts "Instance with name '#{ARGV[1]}' not found"
      exit
    end
  else
    puts "I don't quite understand what you're asking me to do..."
    puts " Try running owssh with no arguments for help!"
    exit
  end
end

#print_instances(instances) ⇒ Object 



35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
 
# File 'lib/owssh.rb', line 35

def print_instances(instances)
  table(:border => true) do
    row do
      column('Hostname', :width => 20)
      column('Public IP', :width => 15, :align => 'right')
      column('Private IP', :width => 15, :align => 'right')
      column('Type', :width => 12)
    end
    instances.each do |instance_name, data|
      row do
        column(instance_name)
        column(data['PUB_IP'])
        column(data['PRIV_IP'])
        column(data['TYPE'])
      end
    end
  end
end

#print_stacks(stacks) ⇒ Object 



54
55
56
57
58
59
60
61
62
63
64
65
66
67
 
# File 'lib/owssh.rb', line 54

def print_stacks(stacks)
  table(:border => true) do
    row do
      column('Stack Name', :width => 20)
      column('Stack ID', :width => 40, :align => 'right')
    end
    stacks.each do |stack_name, id|
      row do
        column(stack_name)
        column(id)
      end
    end
  end
end