summaryrefslogtreecommitdiff
path: root/lib/chef/provider/package/apt.rb
blob: 376ec6fa89a019f90ebf505e77f3c308af866565 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
#
# Author:: Adam Jacob (<adam@opscode.com>)
# Copyright:: Copyright 2008-2016, Opscode, Inc.
# License:: Apache License, Version 2.0
#
# 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.
#

require "chef/provider/package"
require "chef/mixin/command"
require "chef/resource/package"

class Chef
  class Provider
    class Package
      class Apt < Chef::Provider::Package

        provides :package, platform_family: "debian"
        provides :apt_package, os: "linux"

        # return [Hash] mapping of package name to Boolean value
        attr_accessor :is_virtual_package

        def initialize(new_resource, run_context)
          super
          @is_virtual_package = {}
        end

        def load_current_resource
          @current_resource = Chef::Resource::Package.new(@new_resource.name)
          @current_resource.package_name(@new_resource.package_name)
          check_all_packages_state(@new_resource.package_name)
          @current_resource
        end

        def define_resource_requirements
          super

          requirements.assert(:all_actions) do |a|
            a.assertion { !@new_resource.source }
            a.failure_message(Chef::Exceptions::Package, "apt package provider cannot handle source attribute. Use dpkg provider instead")
          end
        end

        def default_release_options
          # Use apt::Default-Release option only if provider supports it
          "-o APT::Default-Release=#{@new_resource.default_release}" if @new_resource.respond_to?(:default_release) && @new_resource.default_release
        end

        def check_package_state(pkg)
          is_virtual_package = false
          installed          = false
          installed_version  = nil
          candidate_version  = nil

          shell_out_with_timeout!("apt-cache#{expand_options(default_release_options)} policy #{pkg}").stdout.each_line do |line|
            case line
            when /^\s{2}Installed: (.+)$/
              installed_version = $1
              if installed_version == "(none)"
                Chef::Log.debug("#{@new_resource} current version is nil")
                installed_version = nil
              else
                Chef::Log.debug("#{@new_resource} current version is #{installed_version}")
                installed = true
              end
            when /^\s{2}Candidate: (.+)$/
              candidate_version = $1
              if candidate_version == "(none)"
                # This may not be an appropriate assumption, but it shouldn't break anything that already worked -- btm
                is_virtual_package = true
                showpkg = shell_out_with_timeout!("apt-cache showpkg #{pkg}").stdout
                providers = Hash.new
                showpkg.rpartition(/Reverse Provides: ?#{$/}/)[2].each_line do |line|
                  provider, version = line.split
                  providers[provider] = version
                end
                # Check if the package providing this virtual package is installed
                num_providers = providers.length
                raise Chef::Exceptions::Package, "#{@new_resource.package_name} has no candidate in the apt-cache" if num_providers == 0
                # apt will only install a virtual package if there is a single providing package
                raise Chef::Exceptions::Package, "#{@new_resource.package_name} is a virtual package provided by #{num_providers} packages, you must explicitly select one to install" if num_providers > 1
                # Check if the package providing this virtual package is installed
                Chef::Log.info("#{@new_resource} is a virtual package, actually acting on package[#{providers.keys.first}]")
                ret = check_package_state(providers.keys.first)
                installed = ret[:installed]
                installed_version = ret[:installed_version]
              else
                Chef::Log.debug("#{@new_resource} candidate version is #{$1}")
              end
            end
          end

          return {
            installed_version:   installed_version,
            installed:           installed,
            candidate_version:   candidate_version,
            is_virtual_package:  is_virtual_package,
          }
        end

        def check_all_packages_state(package)
          installed_version = {}
          candidate_version = {}
          installed = {}

          [package].flatten.each do |pkg|
            ret = check_package_state(pkg)
            is_virtual_package[pkg] = ret[:is_virtual_package]
            installed[pkg]          = ret[:installed]
            installed_version[pkg]  = ret[:installed_version]
            candidate_version[pkg]  = ret[:candidate_version]
          end

          if package.is_a?(Array)
            @candidate_version = []
            final_installed_version = []
            [package].flatten.each do |pkg|
              @candidate_version << candidate_version[pkg]
              final_installed_version << installed_version[pkg]
            end
            @current_resource.version(final_installed_version)
          else
            @candidate_version = candidate_version[package]
            @current_resource.version(installed_version[package])
          end
        end

        def install_package(name, version)
          name_array = [ name ].flatten
          version_array = [ version ].flatten
          package_name = name_array.zip(version_array).map do |n, v|
            is_virtual_package[n] ? n : "#{n}=#{v}"
          end.join(" ")
          run_noninteractive("apt-get -q -y#{expand_options(default_release_options)}#{expand_options(@new_resource.options)} install #{package_name}")
        end

        def upgrade_package(name, version)
          install_package(name, version)
        end

        def remove_package(name, version)
          package_name = [ name ].flatten.join(" ")
          run_noninteractive("apt-get -q -y#{expand_options(@new_resource.options)} remove #{package_name}")
        end

        def purge_package(name, version)
          package_name = [ name ].flatten.join(" ")
          run_noninteractive("apt-get -q -y#{expand_options(@new_resource.options)} purge #{package_name}")
        end

        def preseed_package(preseed_file)
          Chef::Log.info("#{@new_resource} pre-seeding package installation instructions")
          run_noninteractive("debconf-set-selections #{preseed_file}")
        end

        def reconfig_package(name, version)
          package_name = [ name ].flatten.join(" ")
          Chef::Log.info("#{@new_resource} reconfiguring")
          run_noninteractive("dpkg-reconfigure #{package_name}")
        end

        private

        # Runs command via shell_out with magic environment to disable
        # interactive prompts. Command is run with default localization rather
        # than forcing locale to "C", so command output may not be stable.
        def run_noninteractive(command)
          shell_out_with_timeout!(command, :env => { "DEBIAN_FRONTEND" => "noninteractive", "LC_ALL" => nil })
        end

      end
    end
  end
end