Ever need to visualize the data your working with? storejson() to the rescue!
Let’s re-visit our example for sys.os_release from Feature Friday #12: Special variables:
bundle agent __main__
{
reports:
"My custom key 'NORTHERN_TECH_OWNER' contains $(sys.os_release[NORTHERN_TECH_OWNER])";
}R: My custom key 'NORTHERN_TECH_OWNER' contains Nick AndersonSo, we saw the value of a single key, but if we don’t know what keys are available it can be useful to render the JSON representation. The with attribute in combination with storejson() provides a convenient way to visualize the JSON representation of structured data in CFEngine. Let’s adjust the policy:
bundle agent __main__
{
reports:
"My custom key 'NORTHERN_TECH_OWNER' contains $(sys.os_release[NORTHERN_TECH_OWNER])";
"The JSON representation of sys.os_release:$(const.n)$(with)"
with => storejson( "sys.os_release" );
}Running the policy we can see all of the keys and values:
R: My custom key 'NORTHERN_TECH_OWNER' contains Nick Anderson
R: The JSON representation of sys.os_release:
{
"BUG_REPORT_URL": "https://bugs.launchpad.net/ubuntu/",
"HOME_URL": "https://www.ubuntu.com/",
"ID": "ubuntu",
"ID_LIKE": "debian",
"NAME": "Ubuntu",
"NORTHERN_TECH_OWNER": "Nick Anderson",
"PRETTY_NAME": "Ubuntu 22.04.4 LTS",
"PRIVACY_POLICY_URL": "https://www.ubuntu.com/legal/terms-and-policies/privacy-policy",
"SUPPORT_URL": "https://help.ubuntu.com/",
"UBUNTU_CODENAME": "jammy",
"VERSION": "22.04.4 LTS (Jammy Jellyfish)",
"VERSION_CODENAME": "jammy",
"VERSION_ID": "22.04"
}Happy Friday! 🎉
