sonobuoy: Support storing results on host

Currently, results are stored using an emptyDir volume. This change adds
support for storing results using a customizable hostPath. When storing
results in a hostPath, results can still be obtained form the hostPath
while result publishing is disabled.

Change-Id: Ibd01da23a8e74a54f500429cf0ba8ca72f2ac77d

sonobuoy/templates/bin/_publish_results.sh.tpl

@@ -32,3 +32,8 @@ openstack object create --name $prefixed_file_name {{ .Values.conf.swift.contain
 openstack object show {{ .Values.conf.swift.container_name }} $prefixed_file_name
 
 swift post {{ .Values.conf.swift.container_name }} $prefixed_file_name -H \"X-Delete-After:{{ .Values.conf.swift.delete_objects_after_seconds }}\"
+
+# NOTE(aw442m): Delete results after publishing to avoid collisions when using host path
+if [[ ! -z "${RESULTS_DIR}" ]]; then
+  rm "${RESULTS_DIR}"/"${file_name}"
+fi

sonobuoy/templates/pod-api.yaml

@@ -122,6 +122,12 @@ spec:
       name: sonobuoy-plugins
       defaultMode: 0444
     name: sonobuoy-plugins-volume
-  - emptyDir: {}
-    name: sonobuoy-output
+  - name: sonobuoy-output
+{{- if .Values.conf.host_results_path }}
+    hostPath:
+      path: {{ .Values.conf.host_results_path }}
+      type: DirectoryOrCreate
+{{- else }}
+    emptyDir: {}
+{{- end }}
 {{- end }}

sonobuoy/values.yaml

@@ -107,6 +107,8 @@ manifests:
 
 conf:
   publish_results: true
+  # NOTE: use to store results on host; disabled by default.
+  host_results_path: null
   # Injected values root used by (some of) the plugins. This `plugin_values`
   # root is the parent for a mapping of named sections, each of which will be
   # added as a file in the plugin-values secret.