Ansible-with_dict:字典-如何使用每个字典中定义的变量，这些变量取决于其他变量 [英] Ansible - with_dict: dictionary - How to use variables defined in each dictionary which depends upon others

问题描述

环境是:Ansible 1.9.2，CentOS 6.5

我已经创建了一个角色，可以从Artifactory下载3种不同JAVA版本的JAVA(.tar.gz)工件文件.我正在尝试使用Ansible的with_dict功能(而不是使用with_items).

创建了以下文件:

$个cat角色/java/defaults/main.yml

---
java_versions:
  java7_60:
    version: 1.7.60
    group_path: com/oracle/jdk
    classifier: linux-x64
    ext: tar.gz
    dist_file: "jdk-{{ version }}-{{ classifier }}-{{ ext }}"
#    dist_file: "jdk-{{item.value.version }}-{{ item.value.classifier }}-{{ item.value.ext }}"
    dist_url: "{{ artifactory_url }}/{{ group_path }}/{{ version }}/{{ dist_file }}"
#    dist_url: "{{ artifactory_url }}/{{ item.value.group_path }}/{{ item.value.version }}/{{ dist_file }}"

  java7_67:
    version: 1.7.67
    group_path: com/oracle/jdk
    classifier: linux-x64
    ext: tar.gz
    dist_file: "jdk-{{item.value.version }}-{{ item.value.classifier }}-{{ item.value.ext }}"
    dist_url: "{{ artifactory_url }}/{{ item.value.group_path }}/{{ item.value.version }}/{{ dist_file }}"
  java8_45:
    version: 1.8.45
    group_path: com/oracle/jdk
    classifier: linux-x64
    ext: tar.gz
    dist_file: "jdk-{{item.value.version }}-{{ item.value.classifier }}-{{ item.value.ext }}"
    dist_url: "{{ artifactory_url }}/{{ item.value.group_path }}/{{ item.value.version }}/{{ dist_file }}"

如何设置或使用 dist_file 或 dist_url 变量，这些变量取决于同一KEY中定义的其他变量(请在KEY java7_60 中说) )?

现在，当我尝试使用当前的dist_file或dist_url变量 OR 设置它们的注释方式(即使用item.value)时，它没有设置这些值2个所需变量，即取决于其他变量 version，group_path，classifier，ext 和 artifactory_url (在另一个常用角色的defaults/main.yml文件中定义)./p>

我看到要在withbook中使用with_dict:在剧本/任务中，我必须使用{{item.value. variable_name }}，但是如何定义一个依赖于其他变量的变量?字典的"KEY"部分.

在以下任务中使用上述字典时出现的错误消息是:

$个cat角色/java/tasks/main.yml:

- name: Download Java/JDK Versions
  command: wget -q "{{ item.value.dist_url }}"
    chdir="{{ common_download_dir }}"
    creates="{{ common_download_dir }}/{{ item.value.dist_file }}"
  with_dict: "{{ java_versions }}"
  become_user: "{{ build_user }}"

错误消息，使用dist_file/dist_url(当前设置为role/java/defaults/main.yml):

TASK: [java | Download Java/JDK Versions] *************************************
failed: [server01.poc.jenkins] => (item={'key': 'java7_60', 'value': {'dist_file': u'jdk-{# version #}-{# classifier #}-{# ext #}', 'ext': 'tar.gz', 'version': '1.7.60', 'dist_url': u'{# artifactory_ur #}/{# group_path #}/{# version #}/{# dist_file #}', 'group_path': 'com/oracle/jdk', 'classifier': 'linux-x64'}}) => {"changed": true, "cmd": ["wget", "-q", "{# artifactory_url #}/{# group_path #}/{# version }/{# dist_file #}"], "delta": "0:00:00.006081", "end": "2015-11-23 12:50:18.383728", "item": {"key": "java7_60", "value": {"classifier": "linux-x64", "dist_file": "jdk-{# version #}-{# classifier #}-{# ext #}, "dist_url": "{# artifactory_url #}/{# group_path #}/{# version #}/{# dist_file #}", "ext": "tar.gz", "group_path": "com/oracle/jdk", "version": "1.7.60"}}, "rc": 4, "start": "2015-11-23 12:50:18.377647", "wrnings": ["Consider using get_url module rather than running wget"]}

错误消息，使用dist_file/dist_url(在Roles/java/defaults/main.yml中带有当前已被注释掉的行):

TASK: [java | Download Java/JDK Versions] *************************************
failed: [server01.poc.jenkins] => (item={'key': 'java7_60', 'value': {'dist_file': u'jdk-{#item.value.version #}-{# item.value.classifier #}-{# item.value.ext #}', 'ext': 'tar.gz', 'version': '1.7.60' , 'dist_url': u'{# artifactory_url #}/{# item.value.group_path #}/{# item.value.version #}/{# dist_file #}', 'group_path': 'com/oracle/jdk', 'classifier': 'linux-x64'}}) => {"changed": true, "cmd": ["wget",  "-q", "{# artifactory_url #}/{# item.value.group_path #}/{# item.value.version #}/{# dist_file #}"], "delta": "0:00:00.005900", "end": "2015-11-23 12:36:24.131327", "item": {"key": "java7_60", "value": {"cla ssifier": "linux-x64", "dist_file": "jdk-{#item.value.version #}-{# item.value.classifier #}-{# item.value.ext #}", "dist_url": "{# artifactory_url #}/{# item.value.group_path #}/{# item.value.version #}/{#  dist_file #}", "ext": "tar.gz", "group_path": "com/oracle/jdk", "version": "1.7.60"}}, "rc": 4, "start": "2015-11-23 12:36:24.125427", "warnings": ["Consider using get_url module rather than running wget"]}

解决方案

我相信做自己想要的事情的最好方法(因为我不相信循环变量可以引用自己)是 >

- name: Download Java/JDK Versions
  command: wget -q "{{ artifactory_url }}/{{ item.value.group_path }}/{{ item.value.version }}/jdk-{{item.value.version }}-{{ item.value.classifier }}-{{ item.value.ext }}"
    chdir="{{ common_download_dir }}"
    creates="{{ common_download_dir }}/jdk-{{item.value.version }}-{{ item.value.classifier }}-{{ item.value.ext }}"
  with_dict: "{{ java_versions }}"
  become_user: "{{ build_user }}"

基本上是将变量手动插入任务中.

如果需要将变量用于多个任务不是很漂亮，但是在ansible 1.x中，我认为没有办法使它漂亮. Ansible 2.0具有块，您可以使用它们在一个字典上将多个任务循环在一起，并且可以为该块中要使用的所有任务定义变量.

Environment is: Ansible 1.9.2, CentOS 6.5

I have created a role to download JAVA (.tar.gz) artifact files for 3 different JAVA versions from Artifactory. I'm trying to use Ansible's with_dict feature (instead of using with_items).

Created the following files:

$ cat roles/java/defaults/main.yml

---
java_versions:
  java7_60:
    version: 1.7.60
    group_path: com/oracle/jdk
    classifier: linux-x64
    ext: tar.gz
    dist_file: "jdk-{{ version }}-{{ classifier }}-{{ ext }}"
#    dist_file: "jdk-{{item.value.version }}-{{ item.value.classifier }}-{{ item.value.ext }}"
    dist_url: "{{ artifactory_url }}/{{ group_path }}/{{ version }}/{{ dist_file }}"
#    dist_url: "{{ artifactory_url }}/{{ item.value.group_path }}/{{ item.value.version }}/{{ dist_file }}"

  java7_67:
    version: 1.7.67
    group_path: com/oracle/jdk
    classifier: linux-x64
    ext: tar.gz
    dist_file: "jdk-{{item.value.version }}-{{ item.value.classifier }}-{{ item.value.ext }}"
    dist_url: "{{ artifactory_url }}/{{ item.value.group_path }}/{{ item.value.version }}/{{ dist_file }}"
  java8_45:
    version: 1.8.45
    group_path: com/oracle/jdk
    classifier: linux-x64
    ext: tar.gz
    dist_file: "jdk-{{item.value.version }}-{{ item.value.classifier }}-{{ item.value.ext }}"
    dist_url: "{{ artifactory_url }}/{{ item.value.group_path }}/{{ item.value.version }}/{{ dist_file }}"

How can I set or use dist_file or dist_url variables which depends upon other variables defined in the same KEY (lets say in KEY java7_60)?

Right now, when I'm trying either the current dist_file or dist_url variables OR the commented out lines way of setting them (i.e. using item.value.), it's not setting the value of these 2 variables as desired i.e. depending upon other variables version, group_path, classifier, ext and artifactory_url (which is defined in another common role's defaults/main.yml file)).

I saw that for using with_dict: within a playbook/task, I have to use {{ item.value.variable_name }} but how can I define a variable which is dependent upon others within the same KEY section of a dictionary.

The error message I'm getting while using the above dictionary in the following task is:

$ cat roles/java/tasks/main.yml:

- name: Download Java/JDK Versions
  command: wget -q "{{ item.value.dist_url }}"
    chdir="{{ common_download_dir }}"
    creates="{{ common_download_dir }}/{{ item.value.dist_file }}"
  with_dict: "{{ java_versions }}"
  become_user: "{{ build_user }}"

Error message with using dist_file / dist_url (with the current setup in roles/java/defaults/main.yml):

TASK: [java | Download Java/JDK Versions] *************************************
failed: [server01.poc.jenkins] => (item={'key': 'java7_60', 'value': {'dist_file': u'jdk-{# version #}-{# classifier #}-{# ext #}', 'ext': 'tar.gz', 'version': '1.7.60', 'dist_url': u'{# artifactory_ur #}/{# group_path #}/{# version #}/{# dist_file #}', 'group_path': 'com/oracle/jdk', 'classifier': 'linux-x64'}}) => {"changed": true, "cmd": ["wget", "-q", "{# artifactory_url #}/{# group_path #}/{# version }/{# dist_file #}"], "delta": "0:00:00.006081", "end": "2015-11-23 12:50:18.383728", "item": {"key": "java7_60", "value": {"classifier": "linux-x64", "dist_file": "jdk-{# version #}-{# classifier #}-{# ext #}, "dist_url": "{# artifactory_url #}/{# group_path #}/{# version #}/{# dist_file #}", "ext": "tar.gz", "group_path": "com/oracle/jdk", "version": "1.7.60"}}, "rc": 4, "start": "2015-11-23 12:50:18.377647", "wrnings": ["Consider using get_url module rather than running wget"]}

Error message with using dist_file / dist_url (with the lines which are currently commented out in roles/java/defaults/main.yml):

TASK: [java | Download Java/JDK Versions] *************************************
failed: [server01.poc.jenkins] => (item={'key': 'java7_60', 'value': {'dist_file': u'jdk-{#item.value.version #}-{# item.value.classifier #}-{# item.value.ext #}', 'ext': 'tar.gz', 'version': '1.7.60' , 'dist_url': u'{# artifactory_url #}/{# item.value.group_path #}/{# item.value.version #}/{# dist_file #}', 'group_path': 'com/oracle/jdk', 'classifier': 'linux-x64'}}) => {"changed": true, "cmd": ["wget",  "-q", "{# artifactory_url #}/{# item.value.group_path #}/{# item.value.version #}/{# dist_file #}"], "delta": "0:00:00.005900", "end": "2015-11-23 12:36:24.131327", "item": {"key": "java7_60", "value": {"cla ssifier": "linux-x64", "dist_file": "jdk-{#item.value.version #}-{# item.value.classifier #}-{# item.value.ext #}", "dist_url": "{# artifactory_url #}/{# item.value.group_path #}/{# item.value.version #}/{#  dist_file #}", "ext": "tar.gz", "group_path": "com/oracle/jdk", "version": "1.7.60"}}, "rc": 4, "start": "2015-11-23 12:36:24.125427", "warnings": ["Consider using get_url module rather than running wget"]}

解决方案

I believe the best way to do what you want (since I don't believe loop variables can reference themselves) would be to have your task be:

- name: Download Java/JDK Versions
  command: wget -q "{{ artifactory_url }}/{{ item.value.group_path }}/{{ item.value.version }}/jdk-{{item.value.version }}-{{ item.value.classifier }}-{{ item.value.ext }}"
    chdir="{{ common_download_dir }}"
    creates="{{ common_download_dir }}/jdk-{{item.value.version }}-{{ item.value.classifier }}-{{ item.value.ext }}"
  with_dict: "{{ java_versions }}"
  become_user: "{{ build_user }}"

essentially manually inserting the variables into your task.

It's not pretty if you need to use the variables for multiple tasks, but in ansible 1.x I don't think there's a way to make it pretty. Ansible 2.0 has blocks, with which you would be able to loop multiple tasks together over a dict, and you would be able to define variables for all tasks in that block to use.

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