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# This file is part of cloud-init. See LICENSE file for license information.
import pytest
from tests.integration_tests.instances import IntegrationInstance
from tests.integration_tests.util import (
verify_clean_log,
verify_ordered_items_in_text,
)
MERGED_CFG_DOC = (
"Merged cloud-init system config from /etc/cloud/cloud.cfg "
"and /etc/cloud/cloud.cfg.d/"
)
USER_DATA = """\
## template: jinja
#cloud-config
runcmd:
- echo {{v1.local_hostname}} > /var/tmp/runcmd_output
- echo {{merged_cfg._doc}} >> /var/tmp/runcmd_output
- echo {{v1['local-hostname']}} >> /var/tmp/runcmd_output
"""
@pytest.mark.user_data(USER_DATA)
def test_runcmd_with_variable_substitution(client: IntegrationInstance):
"""Test jinja substitution.
Ensure underscore-delimited aliases exist for hyphenated key and
we can also substitute variables from instance-data-sensitive
LP: #1931392.
"""
hostname = client.execute("hostname").stdout.strip()
expected = [hostname, MERGED_CFG_DOC, hostname]
output = client.read_from_file("/var/tmp/runcmd_output")
verify_ordered_items_in_text(expected, output)
@pytest.mark.ci
def test_substitution_in_etc_cloud(client: IntegrationInstance):
orig_etc_cloud = client.read_from_file("/etc/cloud/cloud.cfg")
assert "## template: jinja" not in orig_etc_cloud
new_etc_cloud = (
"## template: jinja\n\n"
f"{orig_etc_cloud}\n\n"
"runcmd:\n"
" - echo {{v1.local_hostname}} > /var/tmp/runcmd_output\n"
)
client.write_to_file("/etc/cloud/cloud.cfg", new_etc_cloud)
new_cloud_part = (
"## template: jinja\n"
"bootcmd:\n"
" - echo {{merged_cfg._doc}} > /var/tmp/bootcmd_output\n"
)
client.write_to_file(
"/etc/cloud/cloud.cfg.d/50-jinja-test.cfg", new_cloud_part
)
cloud_part_no_jinja = "final_message: final hi {{v1.local_hostname}}"
client.write_to_file(
"/etc/cloud/cloud.cfg.d/70-no-jinja-test.cfg", cloud_part_no_jinja
)
client.execute("cloud-init clean --logs")
client.restart()
log = client.read_from_file("/var/log/cloud-init.log")
verify_clean_log(log)
# Ensure /etc/cloud/cloud.cfg template works as expected
hostname = client.execute("hostname").stdout.strip()
assert client.read_from_file("/var/tmp/runcmd_output").strip() == hostname
# Ensure /etc/cloud/cloud.cfg.d template works as expected
assert (
client.read_from_file("/var/tmp/bootcmd_output").strip()
== MERGED_CFG_DOC
)
# Ensure a file without '## template: jinja' isn't interpreted as jinja
assert "final hi {{v1.local_hostname}}" in log
def test_invalid_etc_cloud_substitution(client: IntegrationInstance):
no_var_part = (
"## template: jinja\n"
"runcmd:\n"
" - echo {{bad}} > /var/tmp/runcmd_bad\n"
" - echo {{v1.local_hostname}} > /var/tmp/runcmd_output\n"
"final_message: final hi {{v1.local_hostname}}"
)
client.write_to_file("/etc/cloud/cloud.cfg.d/50-no-var.cfg", no_var_part)
normal_part = "bootcmd:\n" " - echo hi > /var/tmp/bootcmd_output\n"
client.write_to_file("/etc/cloud/cloud.cfg.d/60-normal.cfg", normal_part)
client.execute("cloud-init clean --logs")
client.restart()
log = client.read_from_file("/var/log/cloud-init.log")
# Ensure we get warning from invalid jinja var
assert (
"jinja_template.py[WARNING]: Could not render jinja template "
"variables in file '/etc/cloud/cloud.cfg.d/50-no-var.cfg': "
"'bad'"
) in log
# Ensure the file was still processed with invalid var
assert (
client.read_from_file("/var/tmp/runcmd_bad").strip()
== "CI_MISSING_JINJA_VAR/bad"
)
hostname = client.execute("hostname").stdout.strip()
assert client.read_from_file("/var/tmp/runcmd_output").strip() == hostname
assert f"final hi {hostname}" in log
# Ensure other files continue to load correctly
assert client.read_from_file("/var/tmp/bootcmd_output").strip() == "hi"
|
