Ansible - Use when condition in a playbook for roles - ansible

Question

I am trying to add a when condition in my ansible-playbook. However, I am not able to figure out the exact syntax/method to do it because my roles are using additional parameters. Below mentioned is my playbook
---
- name: Deploying application code
hosts: uat-aegis
roles:
- { role: roles/send_slack, slack_message_text: "*`Started : Deploying code for {{ module_name }} on {{ inventory_hostname }}`*"}
- { role: roles/application_code_backup, backup_directory_name: "NAME", repo_directory: "/path/to/repo" }
- { role: roles/application_copy_config, repo_directory: "/path/to/repo"}
- { role: roles/application_git_pull, repo_url: "git#code.git", repo_directory: "/path/to/repo", branch_name: "BRANCH_NAME"}
- { role: roles/application_pm2_restart, process_name: "NAME" }
- { role: roles/send_slack, slack_message_text: "*`=== Completed : Deploying code for {{ module_name }} on {{ inventory_hostname }} ===`*"}
Here I need to execute roles/application_copy_config only when a certain variable value is true. This variable value is passed as --extra-vars while executing the ansible-playbook from Jenkins(Boolean value parameter in Execute Script). I have tried using the below piece of code but it does not work.
---
- name: Deploying application code
hosts: uat-aegis
roles:
- { role: roles/send_slack, slack_message_text: "*`Started : Deploying code for {{ module_name }} on {{ inventory_hostname }}`*"}
- { role: roles/application_code_backup, backup_directory_name: "NAME", repo_directory: "/path/to/repo" }
- { role: roles/application_copy_config
when: "copy_config=true", repo_directory: "/path/to/repo"}
- { role: roles/application_git_pull, repo_url: "git#code.git", repo_directory: "/path/to/repo", branch_name: "BRANCH_NAME"}
- { role: roles/application_pm2_restart, process_name: "NAME" }
- { role: roles/send_slack, slack_message_text: "*`=== Completed : Deploying code for {{ module_name }} on {{ inventory_hostname }} ===`*"}
ansible-playbook command is as follows
ansible-playbook plays/deploy_application/code.yml --extra-vars "module_name=$MODULE_NAME config_copy_path=$CURRENT_PATH/ env=$ENVIRONMENT copy_config=$COPY_CONFIG"
Please help me to use the when condition in the ansible-playbook. This is required becuase I need to execute the role: roles/application_copy_config only when the variable value is true. I have used this reference for adding when condition in the role

Answer 1

Was able to apply the when condition for boolean values using bool filter as mentioned below
---
- name: Deploying application code
hosts: uat-aegis
roles:
- { role: roles/send_slack, slack_message_text: "*`Started : Deploying code for {{ module_name }} on {{ inventory_hostname }}`*"}
- { role: roles/application_code_backup, backup_directory_name: "NAME", repo_directory: "/path/to/repo", when: var1 | bool }
- { role: roles/application_copy_config, repo_directory: "/path/to/repo"}
- { role: roles/application_git_pull, repo_url: "git#code.git", repo_directory: "/path/to/repo", branch_name: "BRANCH_NAME", when: var2 | bool}
- { role: roles/application_pm2_restart, process_name: "NAME", when: not var3 | bool }
- { role: roles/send_slack, slack_message_text: "*`=== Completed : Deploying code for {{ module_name }} on {{ inventory_hostname }} ===`*"}
Use the below code to check true and false
when: var1 | bool ----> true
when: not var2 | bool ----> false

Answer 2

You can specify conditionals with different style:
- name: Deploying application code
hosts: uat-aegis
roles:
- role: roles/application_code_backup
vars:
backup_directory_name: "NAME"
repo_directory: "/path/to/repo"
when: var1 | bool