Class: Cumulus::VPC::Manager

Inherits:
Common::Manager show all
Includes:
VpcChange
Defined in:
lib/vpc/manager/Manager.rb

Constant Summary

Constants included from VpcChange

VpcChange::ADDRESSES, VpcChange::CIDR, VpcChange::DHCP, VpcChange::ENDPOINTS, VpcChange::NETWORK_ACLS, VpcChange::ROUTE_TABLES, VpcChange::SUBNETS, VpcChange::TAGS, VpcChange::TENANCY

Constants included from Common::DiffChange

Common::DiffChange::ADD, Common::DiffChange::MODIFIED, Common::DiffChange::UNMANAGED

Instance Method Summary collapse

Methods included from Common::DiffChange

next_change_id

Methods inherited from Common::Manager

#diff, #diff_one, #filter_local, #list, #sync, #sync_one

Constructor Details

#initialize ⇒ Manager

Returns a new instance of Manager.



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# File 'lib/vpc/manager/Manager.rb', line 25

def initialize
  super()
  @create_asset = false
  @client = Aws::EC2::Client.new(Configuration.instance.client)
end

Instance Method Details

#added_diff(local) ⇒ Object 



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# File 'lib/vpc/manager/Manager.rb', line 47

def added_diff(local)
  VpcDiff.added(local)
end

#aws_resources ⇒ Object 



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# File 'lib/vpc/manager/Manager.rb', line 39

def aws_resources
  @aws_resources ||= EC2::named_vpcs
end

#diff_resource(local, aws) ⇒ Object 



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# File 'lib/vpc/manager/Manager.rb', line 51

def diff_resource(local, aws)
  local.diff(aws)
end

#local_resources ⇒ Object 



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# File 'lib/vpc/manager/Manager.rb', line 35

def local_resources
  @local_resources ||= Hash[Loader.vpcs.map { |local| [local.name, local] }]
end

#migrate ⇒ Object

Public: Migrates the existing AWS config to Cumulus



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# File 'lib/vpc/manager/Manager.rb', line 243

def migrate
  # Create the directories
  vpc_dir = "#{@migration_root}/vpc"
  policies_dir = "#{vpc_dir}/policies"
  route_tables_dir = "#{vpc_dir}/route-tables"
  network_acls_dir = "#{vpc_dir}/network-acls"
  subnets_dir = "#{vpc_dir}/subnets"
  vpcs_dir = "#{vpc_dir}/vpcs"

  if !Dir.exists?(@migration_root)
    Dir.mkdir(@migration_root)
  end
  if !Dir.exists?(vpc_dir)
    Dir.mkdir(vpc_dir)
  end
  if !Dir.exists?(policies_dir)
    Dir.mkdir(policies_dir)
  end
  if !Dir.exists?(route_tables_dir)
    Dir.mkdir(route_tables_dir)
  end
  if !Dir.exists?(network_acls_dir)
    Dir.mkdir(network_acls_dir)
  end
  if !Dir.exists?(subnets_dir)
    Dir.mkdir(subnets_dir)
  end
  if !Dir.exists?(vpcs_dir)
    Dir.mkdir(vpcs_dir)
  end

  # Migrate the different assets
  migrate_policies(policies_dir)
  route_table_names = migrate_route_tables(route_tables_dir)
  network_acl_names = migrate_network_acls(network_acls_dir)
  subnet_names = migrate_subnets(subnets_dir, route_table_names, network_acl_names)
  migrate_vpcs(vpcs_dir, route_table_names, subnet_names, network_acl_names)
end

#migrate_network_acls(dir) ⇒ Object

Public: Migrate Network ACLs. Uses name if available or id to name file.

dir - the directory to store network acl configurations in

Returns a Hash of network acl id to file name



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# File 'lib/vpc/manager/Manager.rb', line 321

def migrate_network_acls(dir)
  puts Colors.blue("Migrating network acls to #{dir}")
  Hash[EC2::named_network_acls.map do |name, network_acl|
    puts "Migrating network acl #{name}"

    cumulus_acl = NetworkAclConfig.new(name).populate!(network_acl)

    json = JSON.pretty_generate(cumulus_acl.to_hash)
    File.open("#{dir}/#{name}.json", "w") { |f| f.write(json) }

    [network_acl.network_acl_id, name]
  end]
end

#migrate_policies(dir) ⇒ Object

Public: Migrates the endpoint policies. Uses Version to name the file

dir - the directory to store policies in



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# File 'lib/vpc/manager/Manager.rb', line 285

def migrate_policies(dir)
  puts Colors.blue("Migrating policies to #{dir}")
  # Get the policies for each endpoint
  policies = EC2::endpoints.map { |endpoint| endpoint.parsed_policy }
  policies.each do |policy|
    name = policy["Version"]
    puts "Migrating policy #{name}"
    json = JSON.pretty_generate(policy)
    File.open("#{dir}/#{name}.json", "w") { |f| f.write(json) }
  end
end

#migrate_route_tables(dir) ⇒ Object

Public: Migrates route tables. Uses name if available or id to name file.

dir - the directory to store route table configurations in

Returns a Hash of route table id to file name



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# File 'lib/vpc/manager/Manager.rb', line 302

def migrate_route_tables(dir)
  puts Colors.blue("Migrating route tables to #{dir}")
  Hash[EC2::named_route_tables.map do |name, route_table|
    puts "Migrating route table #{name}"

    cumulus_rt = RouteTableConfig.new(name).populate!(route_table)

    json = JSON.pretty_generate(cumulus_rt.to_hash)
    File.open("#{dir}/#{name}.json", "w") { |f| f.write(json) }

    [route_table.route_table_id, name]
  end]
end

#migrate_subnets(dir, rt_map, acl_map) ⇒ Object

Public: Migrates subnets. Uses name if available or id to name file.

dir - the directory to store subnet configurations in rt_map - a map of route table ids to names to substitute for in the subnet config acl_map - a map of network acl ids to names to substitute for in the subnet config

Returns a hash of subnet id to file name



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# File 'lib/vpc/manager/Manager.rb', line 342

def migrate_subnets(dir, rt_map, acl_map)
  puts Colors.blue("Migrating subnets to #{dir}")
  Hash[EC2::named_subnets.map do |name, subnet|
    puts "Migrating subnet #{name}"

    cumulus_subnet = SubnetConfig.new(name).populate!(subnet, rt_map, acl_map)

    json = JSON.pretty_generate(cumulus_subnet.to_hash)
    File.open("#{dir}/#{name}.json", "w") { |f| f.write(json) }

    [subnet.subnet_id, name]
  end]
end

#migrate_vpcs(dir, rt_map, subnet_map, acl_map) ⇒ Object

Public: Migrates vpcs. Uses name if available or id to name file.

dir - the directory to store vpc configurations in rt_map - a map of route table ids to names to substitute for in the vpc config subnet_map - a map of subnet ids to names to substitute for in the vpc config acl_map - a map of network acl ids to names to substitute fo rin the vpc config



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# File 'lib/vpc/manager/Manager.rb', line 362

def migrate_vpcs(dir, rt_map, subnet_map, acl_map)
  puts Colors.blue("Migrating vpcs to #{dir}")
  EC2::named_vpcs.each do |name, vpc|
    puts "Migrating vpc #{name}"

    cumulus_vpc = (VpcConfig.new(name)).populate!(vpc, rt_map, subnet_map, acl_map)

    json = JSON.pretty_generate(cumulus_vpc.to_hash)
    File.open("#{dir}/#{name}.json", "w") { |f| f.write(json) }
  end
end

#rename(asset_type, old_name, new_name) ⇒ Object

Public: Renames an asset and all references to it and syncs the name tag change to AWS.



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# File 'lib/vpc/manager/Manager.rb', line 97

def rename(asset_type, old_name, new_name)

  # Strip .json from the old_name and new_name
  old_name = old_name.end_with?(".json") ? old_name[0...-5] : old_name
  new_name = new_name.end_with?(".json") ? new_name[0...-5] : new_name

  vpcs_dir = Configuration.instance.vpc.vpcs_directory
  subnets_dir = Configuration.instance.vpc.subnets_directory
  route_tables_dir = Configuration.instance.vpc.route_tables_directory
  policies_dir = Configuration.instance.vpc.policies_directory
  network_acls_dir = Configuration.instance.vpc.network_acls_directory

  case asset_type
  when "network-acl"

    puts Colors.blue("Renaming Network ACL #{old_name} to #{new_name}")

    # Update the Name tag and resave the file
    acl_local = Loader.network_acl(old_name)
    acl_local.tags["Name"] = new_name
    json = JSON.pretty_generate(acl_local.to_hash)
    File.open("#{network_acls_dir}/#{new_name}.json", "w") { |f| f.write(json) }

    # Update the tags in AWS
    acl_aws = EC2::named_network_acls[old_name]
    create_tags(acl_aws.network_acl_id, { "Name" => new_name})

    # Update the vpc references to it
    Loader.vpcs.each do |vpc|
      vpc.network_acls.collect! { |acl_name| if acl_name == old_name then new_name else acl_name end }

      json = JSON.pretty_generate(vpc.to_hash)
      File.open("#{vpcs_dir}/#{vpc.name}.json", "w") { |f| f.write(json) }
    end

    # Update the subnet references to it
    Loader.subnets.each do |subnet|
      if subnet.network_acl == old_name
        subnet.network_acl = new_name

        json = JSON.pretty_generate(subnet.to_hash)
        File.open("#{subnets_dir}/#{subnet.name}.json", "w") { |f| f.write(json) }
      end
    end

    # Delete the old file
    File.delete("#{network_acls_dir}/#{old_name}.json")

  when "policy"

    puts Colors.blue("Renaming policy #{old_name} to #{new_name}")

    # Rename the file
    File.rename("#{policies_dir}/#{old_name}.json", "#{policies_dir}/#{new_name}.json")

    # Update the references to it in vpc endpoint
    Loader.vpcs.each do |vpc|

      endpoints_updated = false
      vpc.endpoints.each do |endpoint|
        if endpoint.policy == old_name
          endpoint.policy = new_name
          endpoints_updated = true
        end
      end

      if endpoints_updated
        json = JSON.pretty_generate(vpc.to_hash)
        File.open("#{vpcs_dir}/#{vpc.name}.json", "w") { |f| f.write(json) }
      end
    end

  when "route-table"
    puts Colors.blue("Renaming route table #{old_name} to #{new_name}")

    # Update the Name tag and resave the file
    rt_local = Loader.route_table(old_name)
    rt_local.tags["Name"] = new_name
    json = JSON.pretty_generate(rt_local.to_hash)
    File.open("#{route_tables_dir}/#{new_name}.json", "w") { |f| f.write(json) }

    # Update the tags in AWS
    rt_aws = EC2::named_route_tables[old_name]
    create_tags(rt_aws.route_table_id, { "Name" => new_name})

    # Update the vpc references to it
    Loader.vpcs.each do |vpc|
      vpc.route_tables.collect! { |rt_name| if rt_name == old_name then new_name else rt_name end }

      json = JSON.pretty_generate(vpc.to_hash)
      File.open("#{vpcs_dir}/#{vpc.name}.json", "w") { |f| f.write(json) }
    end

    # Update the subnet references to it
    Loader.subnets.each do |subnet|
      if subnet.route_table == old_name
        subnet.route_table = new_name
        json = JSON.pretty_generate(subnet.to_hash)
        File.open("#{subnets_dir}/#{subnet.name}.json", "w") { |f| f.write(json) }
      end
    end

    # Delete the old file
    File.delete("#{route_tables_dir}/#{old_name}.json")
  when "subnet"
    puts Colors.blue("Renaming subnet #{old_name} to #{new_name}")

    # Update the Name tag and resave the file
    subnet_local = Loader.subnet(old_name)
    subnet_local.tags["Name"] = new_name
    json = JSON.pretty_generate(subnet_local.to_hash)
    File.open("#{subnets_dir}/#{new_name}.json", "w") { |f| f.write(json) }

    # Update the tags in AWS
    subnet_aws = EC2::named_subnets[old_name]
    create_tags(subnet_aws.subnet_id, { "Name" => new_name})

    # Update the vpc references to it
    Loader.vpcs.each do |vpc|
      vpc.subnets.collect! { |subnet_name| if subnet_name == old_name then new_name else subnet_name end }

      json = JSON.pretty_generate(vpc.to_hash)
      File.open("#{vpcs_dir}/#{vpc.name}.json", "w") { |f| f.write(json) }
    end

    # Delete the old file
    File.delete("#{subnets_dir}/#{old_name}.json")
  when "vpc"
    puts Colors.blue("Renaming vpc #{old_name} to #{new_name}")

    # Update the Name tag and resave the file
    vpc_local = Loader.vpc(old_name)
    vpc_local.tags["Name"] = new_name
    json = JSON.pretty_generate(vpc_local.to_hash)
    File.open("#{vpcs_dir}/#{new_name}.json", "w") { |f| f.write(json) }

    # Update the tags in AWS
    vpc_aws = EC2::named_vpcs[old_name]
    create_tags(vpc_aws.vpc_id, { "Name" => new_name})

    # Delete the old file
    File.delete("#{vpcs_dir}/#{old_name}.json")
  end
end

#resource_name ⇒ Object 



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# File 'lib/vpc/manager/Manager.rb', line 31

def resource_name
  "Virtual Private Cloud"
end

#rt_ids(rt_names) ⇒ Object 



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# File 'lib/vpc/manager/Manager.rb', line 572

def rt_ids(rt_names)
  rt_names.map do |rt_name|
    aws_rt = EC2::named_route_tables[rt_name]
    if aws_rt.nil?
      puts Colors.red("Error updating endpoints. No route table found for #{rt_name}.")
      exit 1
    else
      aws_rt.route_table_id
    end
  end
end

#unmanaged_diff(aws) ⇒ Object 



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# File 'lib/vpc/manager/Manager.rb', line 43

def unmanaged_diff(aws)
  VpcDiff.unmanaged(aws)
end

#update(local, diffs) ⇒ Object 



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# File 'lib/vpc/manager/Manager.rb', line 55

def update(local, diffs)
  aws_vpc = EC2::named_vpcs[local.name]

  diffs.each do |diff|
    case diff.type
    when CIDR
      puts Colors.blue("CIDR Block cannot be updated. You must create a new VPC.")
    when TENANCY
      puts Colors.blue("Tenancy cannot be updated. You must create a new VPC.")
    when DHCP
      puts Colors.blue("Updating DHCP Options...")
      update_dhcp_options(aws_vpc, local.dhcp)
    when ROUTE_TABLES
      puts Colors.blue("Updating Route Tables...")
      update_route_tables(aws_vpc, diff.changes)
    when ENDPOINTS
      puts Colors.blue("Updating Endpoints...")
      update_endpoints(aws_vpc, diff.changes)
    when ADDRESSES
      puts Colors.blue("Updating Address Associations...")
      update_address_associations(aws_vpc, diff.changes)
    when NETWORK_ACLS
      puts Colors.blue("Updating Network ACLs")
      update_network_acls(aws_vpc, diff.changes)
    when SUBNETS
      puts Colors.blue("Updating Subnets...")
      update_subnets(aws_vpc, diff.changes)
    when TAGS
      puts Colors.blue("Updating Tags...")

      if !diff.tags_to_remove.empty?
        delete_tags(aws_vpc.vpc_id, diff.tags_to_remove)
      end

      if !diff.tags_to_add.empty?
        create_tags(aws_vpc.vpc_id, diff.tags_to_add)
      end
    end
  end
end