将变量从厨师资源传递到同一厨师食谱中的其他资源

Question

我是 Chef 和 Ruby 的新手，我很困惑如何在 Chef 中处理变量，我正在尝试将变量 [Var] 从 ruby_block 资源传递到 http_request 资源并将 [Var] 值分配给厨师食谱 [customer.rb] 中 "value":"#{Var}" 中的值，如下面的代码所示，我得到了一个错误。

[Var.js] 是一个 json 文件，包含大约 100 行代码。我想将这个文件的内容传递给一个变量[Var]，并调用这个变量来更新网站的一些配置[http://localhost:6000/Master/endpoint_1_in/set]

        directory 'work' do
            owner 'root'
            group 'root'
            mode '0775'
            recursive true
            action :create
        end

        bash 'Extract customer Package' do
        cwd '/work'
        code <<-EOH
            curl -L --header "PRIVATE-TOKEN: XXXXXXXXXXXXXX" "https://www.company.sm/api/v4/projects/44/packages/generic/customer/1.0.0-customer/customer.tar.gz" > /work/customer.tar.gz
            tar xzf customer.tar.gz
            EOH
        end

        ruby_block 'Read customer file into Var variable' do
            block do
                if File.exists?("/work/customer/Var.js")
                    Var = IO.read("/work/customer/Var.js")
                end
            end
        end

        http_request 'cusromer update' do
            action :put
            url 'http://localhost:6000/Master/endpoint_1_in/set'
            message ({
                "moduleId" => "endpoint_1_in",
                "moduleType" => "ENDPOINT_1_IN",
                "options" => [
                    {
                        "key": "somename.text",
                        "value":"#{Var}" 
                    }
                ],
            }.to_json)
            headers({'Authorization' => "Basic #{basicauth}", 'Content-Type' => 'application/json;charset=utf-8' })

            retries 10
            retry_delay 30

        end

我得到的错误是

        Installing cookbook gem dependencies:
            Compiling cookbooks...
            Loading Chef InSpec profile files:
            Loading Chef InSpec input files:
            Loading Chef InSpec waiver files:
            
            ================================================================================
            Recipe Compile Error in /tmp/kitchen/cache/cookbooks/clinic/recipes/customer.rb
            ================================================================================
            
            NameError
            ---------
            uninitialized constant #<Class:#<Chef::Recipe:0x0000000002bac870>>::Var
            
            Cookbook Trace: (most recent call first)
            ----------------------------------------
            
            Relevant File Content:
            ----------------------
            /tmp/kitchen/cache/cookbooks/clinic/recipes/customer.rb:
            
                64:      url 'http://localhost:6000/Master/endpoint_1_in/set'
                65:      message ({
                66:          "moduleId" => "endpoint_1_in",
                67:          "moduleType" => "ENDPOINT_1_IN",
                68:          "options" => [
                69:              {
                70:                  "key": "somename.text",
                71>>                 "value":"#{Var}" 
                72:              }
                73:          ],
                74:          
                75:      }.to_json)
            
            System Info:
            ------------
            chef_version=17.10.3
            platform=ubuntu
            platform_version=20.04
            ruby=ruby 3.0.3p157 (2021-11-24 revision 3fb7d2cadc) [x86_64-linux]
            program_name=/opt/chef/bin/chef-client
            executable=/opt/chef/bin/chef-client
            
            
            Running handlers:
            [2022-05-13T16:25:57+00:00] ERROR: Running exception handlers
            Running handlers complete
            [2022-05-13T16:25:57+00:00] ERROR: Exception handlers complete
            Infra Phase failed. 0 resources updated in 02 seconds
            [2022-05-13T16:25:57+00:00] FATAL: Stacktrace dumped to /tmp/kitchen/cache/chef-stacktrace.out
            [2022-05-13T16:25:57+00:00] FATAL: ---------------------------------------------------------------------------------------
            [2022-05-13T16:25:57+00:00] FATAL: PLEASE PROVIDE THE CONTENTS OF THE stacktrace.out FILE (above) IF YOU FILE A BUG REPORT
            [2022-05-13T16:25:57+00:00] FATAL: ---------------------------------------------------------------------------------------
            [2022-05-13T16:25:57+00:00] FATAL: NameError: uninitialized constant #<Class:#<Chef::Recipe:0x0000000002bac870>>::Var
        >>>>>> ------Exception-------
        >>>>>> Class: Kitchen::ActionFailed
        >>>>>> Message: 1 actions failed.
        >>>>>>     Converge failed on instance <default-ubuntu-2004>.  Please see .kitchen/logs/default-ubuntu-2004.log for more details
        >>>>>> ----------------------
        >>>>>> Please see .kitchen/logs/kitchen.log for more details
        >>>>>> Also try runn

我花了2个星期才解决我不能。如果有解决方法，请帮助我。

Answer 1

由于您正在运行宁一些 Ruby 代码来获取文件内容，您甚至可以在 Chef 资源之外执行此操作。类似于：

if File.exists?("/work/customer/Var.js")
  var = File.read("/work/customer/Var.js")
end

http_request 'cusromer update' do
  action :put
  # rest of code
end

请注意，我使用 var 小写 v。

解释：

chef-client 在运行期间经过 several phases。与此答案相关的两个是：

编译
收敛

编译所有变量和资源，并在编译阶段进行赋值。所以 var 保持未分配状态，因为在编译阶段没有对它的定义。而 ruby_block 和 http_request 运行在收敛阶段。

将变量从厨师资源传递到同一厨师食谱中的其他资源

pass variables from a chef resouce to other resources in the same chef recipe

chef-infra

chef-attributes