Class: Cumulus::VPC::VpcDiff

Inherits:
Common::Diff show all
Includes:
Common::TagsDiff, VpcChange
Defined in:
lib/vpc/models/VpcDiff.rb

Overview

Public: Represents a single difference between local configuration and AWS configuration

Defined Under Namespace

Classes: AddressChange

Constant Summary

Constants included from VpcChange

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

Constants included from Common::DiffChange

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

Instance Attribute Summary

Attributes inherited from Common::Diff

#aws, #changes, #info_only, #local, #type

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Common::TagsDiff

#tags_diff_string, #tags_to_add, #tags_to_remove

Methods included from Common::DiffChange

next_change_id

Methods inherited from Common::Diff

#add_string, added, #initialize, #local_name, modified, #to_s, unmanaged, #unmanaged_string

Constructor Details

This class inherits a constructor from Cumulus::Common::Diff

Class Method Details

.address_associations(aws, local) ⇒ Object 



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# File 'lib/vpc/models/VpcDiff.rb', line 125

def self.address_associations(aws, local)
  any_addresses = local.select { |ip, key| key.downcase == "any" }

  # Map the aws and local public ips to network interface
  aws_addresses = Hash[aws.map { |addr| [addr.public_ip, EC2::id_network_interfaces[addr.network_interface_id]] }]

  local_addresses = Hash[local.map do |ip, key|
    interface = EC2::named_network_interfaces[key]

    if interface.nil?
      if key.downcase == "any"
        interface = "any"
      else
        puts Colors.red("Config error: no network interface exists for #{key}")
        exit 1
      end
    end

    [ip, interface]
  end].reject { |k, v| v.nil? }

  added = local_addresses.reject { |k, v| aws_addresses.has_key? k }
  added_names = Hash[added.map do |ip, interface|
    name = if interface == "any"
      "any"
    else
      interface.name || interface.network_interface_id
    end
    [ip, AddressChange.new(nil, nil, name, interface)]
  end]

  removed = aws_addresses.reject { |k, v| local_addresses.has_key? k }
  removed_names = Hash[removed.map { |ip, interface| [ip, AddressChange.new(interface.name || interface.network_interface_id, interface, nil, nil)] }]

  modified = local_addresses.reject { |_, v| v == "any" }.select { |k, v| aws_addresses.has_key? k and aws_addresses[k].network_interface_id != v.network_interface_id }
  modified_changes = Hash[modified.map do |ip, local_interface|
      aws_interface = aws_addresses[ip]
      aws_name = aws_interface.name || aws_interface.network_interface_id
      local_name = local_interface.name || local_interface.network_interface_id
    [ip, AddressChange.new(aws_name, aws_interface, local_name, local_interface)]
  end]

  if !added_names.empty? or !removed_names.empty? or !modified_changes.empty?
    diff = VpcDiff.new(ADDRESSES, aws, local_addresses)
    diff.changes = Common::ListChange.new(added_names, removed_names, modified_changes)
    diff
  end
end

.dhcp(aws, local) ⇒ Object 



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# File 'lib/vpc/models/VpcDiff.rb', line 58

def self.dhcp(aws, local)
  dhcp_diffs = if !aws and local
    [DhcpDiff.added(local)]
  elsif !local and aws
    [DhcpDiff.unmanaged(aws)]
  elsif local and aws
    local.diff(aws)
  end

  if dhcp_diffs and !dhcp_diffs.empty?
    diff = VpcDiff.new(DHCP, aws, local)
    diff.changes = dhcp_diffs
    diff
  end
end

.endpoints(aws, local) ⇒ Object 



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# File 'lib/vpc/models/VpcDiff.rb', line 99

def self.endpoints(aws, local)
  aws_service_endpoints = Hash[aws.map { |e| [e.service_name, e] }]
  local_service_endpoints = Hash[local.map { |e| [e.service_name, e] }]

  added = local_service_endpoints.reject { |k, v| aws_service_endpoints.has_key? k }
  removed = aws_service_endpoints.reject { |k, v| local_service_endpoints.has_key? k }
  modified = local_service_endpoints.select { |k, v| aws_service_endpoints.has_key? k }

  added_diffs = Hash[added.map { |service_name, endpoint| [service_name, EndpointDiff.added(endpoint)]}]
  removed_diffs = Hash[removed.map { |service_name, endpoint| [service_name, EndpointDiff.unmanaged(endpoint)]}]
  modified_diffs = Hash[modified.map do |service_name, endpoint|
    aws_endpoint = aws_service_endpoints[service_name]
    endpoint_diffs = endpoint.diff(aws_endpoint)
    if !endpoint_diffs.empty?
      [service_name, EndpointDiff.modified(aws_endpoint, endpoint, endpoint_diffs)]
    end
  end.reject { |v| v.nil? }]

  if !added_diffs.empty? or !removed_diffs.empty? or !modified_diffs.empty?
    diff = VpcDiff.new(ENDPOINTS, aws, local)
    diff.changes = Common::ListChange.new(added_diffs, removed_diffs, modified_diffs)
    diff
  end
end

.network_acls(aws, local) ⇒ Object 



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# File 'lib/vpc/models/VpcDiff.rb', line 174

def self.network_acls(aws, local)
  aws_network_acl_names = Hash[aws.map { |acl| [acl.name || acl.network_acl_id, acl] }]
  local_network_acl_names = Hash[local.map { |acl| [acl.name, acl] }]

  added = local_network_acl_names.reject { |k, v| aws_network_acl_names.has_key? k }
  removed = aws_network_acl_names.reject { |k, v| local_network_acl_names.has_key? k }
  modified = local_network_acl_names.select { |k, v| aws_network_acl_names.has_key? k }

  added_diffs = Hash[added.map { |name, acl| [name, NetworkAclDiff.added(acl)] }]
  removed_diffs = Hash[removed.map { |name, acl| [name, NetworkAclDiff.unmanaged(acl)] }]
  modified_diffs = Hash[modified.map do |name, acl|
    aws_acl = aws_network_acl_names[name]
    acl_diffs = acl.diff(aws_acl)
    if !acl_diffs.empty?
      [name, NetworkAclDiff.modified(aws_acl, acl, acl_diffs)]
    end
  end.reject { |v| v.nil? }]

  if !added_diffs.empty? or !removed_diffs.empty? or !modified_diffs.empty?
    diff = VpcDiff.new(NETWORK_ACLS, aws, local)
    diff.changes = Common::ListChange.new(added_diffs, removed_diffs, modified_diffs)
    diff
  end
end

.route_tables(aws, local) ⇒ Object 



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# File 'lib/vpc/models/VpcDiff.rb', line 74

def self.route_tables(aws, local)
  aws_name_route_tables = Hash[aws.map { |rt| [rt.name || rt.route_table_id, rt] }]
  local_name_route_tables = Hash[local.map { |rt| [rt.name, rt] }]

  added = local_name_route_tables.reject { |k, v| aws_name_route_tables.has_key? k }
  removed = aws_name_route_tables.reject { |k, v| local_name_route_tables.has_key? k }
  modified = local_name_route_tables.select { |k, v| aws_name_route_tables.has_key? k }

  added_diffs = Hash[added.map { |rt_name, rt| [rt_name, RouteTableDiff.added(rt)]}]
  removed_diffs = Hash[removed.map { |rt_name, rt| [rt_name, RouteTableDiff.unmanaged(rt)]}]
  modified_diffs = Hash[modified.map do |rt_name, rt|
    aws_rt = aws_name_route_tables[rt_name]
    rt_diffs = rt.diff(aws_rt)
    if !rt_diffs.empty?
      [rt_name, RouteTableDiff.modified(aws_rt, rt, rt_diffs)]
    end
  end.reject { |v| v.nil? }]

  if !added_diffs.empty? or !removed_diffs.empty? or !modified_diffs.empty?
    diff = VpcDiff.new(ROUTE_TABLES, aws, local)
    diff.changes = Common::ListChange.new(added_diffs, removed_diffs, modified_diffs)
    diff
  end
end

.subnets(aws, local) ⇒ Object 



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# File 'lib/vpc/models/VpcDiff.rb', line 33

def self.subnets(aws, local)
  aws_name_subnets = Hash[aws.map { |subnet| [subnet.name || subnet.subnet_id, subnet] }]
  local_name_subnets = Hash[local.map { |subnet| [subnet.name, subnet] }]

  added = local_name_subnets.reject { |k, v| aws_name_subnets.has_key? k }
  removed = aws_name_subnets.reject { |k, v| local_name_subnets.has_key? k }
  modified = local_name_subnets.select { |k, v| aws_name_subnets.has_key? k }

  added_diffs = Hash[added.map { |subnet_name, subnet| [subnet_name, SubnetDiff.added(subnet)] }]
  removed_diffs = Hash[removed.map { |subnet_name, subnet| [subnet_name, SubnetDiff.unmanaged(subnet)] }]
  modified_diffs = Hash[modified.map do |subnet_name, subnet|
    aws_subnet = aws_name_subnets[subnet_name]
    subnet_diffs = subnet.diff(aws_subnet)
    if !subnet_diffs.empty?
      [subnet_name, SubnetDiff.modified(aws_subnet, subnet, subnet_diffs)]
    end
  end.reject { |v| v.nil? }]

  if !added_diffs.empty? or !removed_diffs.empty? or !modified_diffs.empty?
    diff = VpcDiff.new(SUBNETS, aws, local)
    diff.changes = Common::ListChange.new(added_diffs, removed_diffs, modified_diffs)
    diff
  end
end

Instance Method Details

#asset_type ⇒ Object 



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# File 'lib/vpc/models/VpcDiff.rb', line 207

def asset_type
  "Virtual Private Cloud"
end

#aws_name ⇒ Object 



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# File 'lib/vpc/models/VpcDiff.rb', line 211

def aws_name
  @aws.name || @aws.vpc_id
end

#aws_tags ⇒ Object 



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# File 'lib/vpc/models/VpcDiff.rb', line 203

def aws_tags
  @aws
end

#diff_string ⇒ Object 



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# File 'lib/vpc/models/VpcDiff.rb', line 215

def diff_string
  case @type
  when CIDR
    [
      "CIDR Block:",
      Colors.aws_changes("\tAWS - #{aws}"),
      Colors.local_changes("\tLocal - #{local}"),
    ].join("\n")
  when TENANCY
    [
      "Tenancy:",
      Colors.aws_changes("\tAWS - #{aws}"),
      Colors.local_changes("\tLocal - #{local}"),
    ].join("\n")
  when SUBNETS
    [
      "Subnets:",
      @changes.removed.map { |s, _| Colors.unmanaged("\t#{s} is not managed by Cumulus") },
      @changes.added.map { |s, _| Colors.added("\t#{s} will be created") },
      @changes.modified.map do |subnet_name, diff|
        [
          "\t#{subnet_name}:",
          diff.changes.map do |diff|
            diff.to_s.lines.map { |l| "\t\t#{l}".chomp("\n") }
          end
        ]
      end
    ].flatten.join("\n")
  when DHCP
    [
      "DHCP Options:",
      if !@aws
        Colors.added(
          JSON.pretty_generate(@local.to_hash).lines.map { |l| "\t#{l}".chomp("\n") }.join("\n")
        )
      elsif !@local
        Colors.unmanaged("\tChanging DHCP options to default")
      else
        @changes.map do |diff|
          diff.to_s.lines.map { |l| "\t#{l}".chomp("\n") }
        end
      end
    ].flatten.join("\n")
  when ROUTE_TABLES
    [
      "Route Tables:",
      @changes.removed.map { |r, _| Colors.unmanaged("\t#{r} will be deleted") },
      @changes.added.map { |r, _| Colors.added("\t#{r} will be created") },
      @changes.modified.map do |rt_name, diff|
        [
          "\t#{rt_name}:",
          diff.changes.map do |diff|
            diff.to_s.lines.map { |l| "\t\t#{l}".chomp("\n") }
          end
        ]
      end
    ].flatten.join("\n")
  when ENDPOINTS
    [
      "Endpoints:",
      @changes.removed.map { |e, _| Colors.unmanaged("\t#{e} will be deleted") },
      @changes.added.map { |e, _| Colors.added("\t#{e} will be created") },
      @changes.modified.map do |endpoint_name, diff|
        [
          "\t#{endpoint_name}:",
          diff.changes.map do |diff|
            diff.to_s.lines.map { |l| "\t\t#{l}".chomp("\n") }
          end
        ]
      end
    ].flatten.join("\n")
  when ADDRESSES
    [
      "Address Associations:",
      @changes.removed.map { |ip, addr_change| Colors.unmanaged("\t#{ip} will be disassociated from #{addr_change.aws_name}") },
      @changes.added.map { |ip, addr_change| Colors.added("\t#{ip} will be associated to #{addr_change.local_name}") },
      @changes.modified.map do |ip, addr_change|
        "\t#{ip} will be changed from #{addr_change.aws_name} to #{addr_change.local_name}"
      end
    ].flatten.join("\n")
  when NETWORK_ACLS
    [
      "Network ACLs:",
      @changes.removed.map { |acl_name, _| Colors.unmanaged("\t#{acl_name} will be deleted") },
      @changes.added.map { |acl_name, _| Colors.added("\t#{acl_name} will be created") },
      @changes.modified.map do |acl_name, diff|
        [
          "\t#{acl_name}:",
          diff.changes.map do |diff|
            diff.to_s.lines.map { |l| "\t\t#{l}".chomp("\n") }
          end
        ]
      end
    ].flatten.join("\n")
  when TAGS
    tags_diff_string
  end
end

#local_tags ⇒ Object 



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# File 'lib/vpc/models/VpcDiff.rb', line 199

def local_tags
  @local
end