Updating logging_facts to be able to pull values from config maps yaml files, use diffs to keep custom changes, white list certain settings when creating diffs

1 files changed, 31 insertions, 0 deletions

diff --git a/roles/openshift_logging/tasks/patch_configmap_files.yaml b/roles/openshift_logging/tasks/patch_configmap_files.yaml
new file mode 100644
index 000000000..74a9cc287
--- /dev/null
+++ b/roles/openshift_logging/tasks/patch_configmap_files.yaml
@@ -0,0 +1,31 @@
+---
+## The purpose of this task file is to take in a list of configmap files provided
+##  in the variable configmap_file_names, which correspond to the data sections
+##  within a configmap. We iterate over each of these files and create a patch
+##  from the diff between current_file and new_file to try to maintain any custom
+##  changes that a user may have made to a currently deployed configmap while
+##  trying to idempotently update with any role provided files.
+
+## The following variables are expected to be provided when including this task:
+# configmap_name        -- This is the name of the configmap that the files exist in
+# configmap_namespace   -- The namespace that the configmap lives in
+# configmap_file_names  -- This is expected to be passed in as a dict
+#   current_file        -- The name of the data entry within the configmap
+#   new_file            -- The file path to the file we are comparing to current_file
+#   protected_lines     -- List of variables whose line will be excluded when creating a diff
+
+- oc_configmap:
+    name: "{{ configmap_name }}"
+    state: list
+    namespace: "{{ configmap_namespace }}"
+  register: __configmap_output
+
+- when: __configmap_output.results.stderr is undefined
+  include_tasks: patch_configmap_file.yaml
+  vars:
+    configmap_current_file: "{{ configmap_files.current_file }}"
+    configmap_new_file: "{{ configmap_files.new_file }}"
+    configmap_protected_lines: "{{ configmap_files.protected_lines | default([]) }}"
+  with_items: "{{ configmap_file_names }}"
+  loop_control:
+    loop_var: configmap_files