feat: Add flag for atomic variable (#45)

Not every deployment should be rolled back when the deployment fails. Add a
flag to enable the atomic parameter.

README.md

@@ -35,6 +35,7 @@ payload if the action was triggered by a deployment.
 - `version`: Version of the app, usually commit sha works here.
 - `timeout`: specify a timeout for helm deployment
 - `repository`: specify the URL for a helm repo to come from
+- `atomic`: If true, upgrade process rolls back changes made in case of failed upgrade. Defaults to true.
 
 Additional parameters: If the action is being triggered by a deployment event
 and the `task` parameter in the deployment event is set to `"remove"` then this

action.yml

@@ -17,10 +17,16 @@ inputs:
   values:
     description: Helm chart values, expected to be a YAML or JSON string.
     required: false
-  dry-run:
+  task:
     description: Task name. If the task is "remove" it will remove the configured
       helm release.
     required: false
+  dry-run:
+    description: Simulate an upgrade.
+    required: false
+  atomic:
+    description: If true, upgrade process rolls back changes made in case of failed upgrade. Defaults to true.
+    required: false
   helm:
     description: Helm binary to execute, one of [helm, helm3].
     required: false

index.js

@@ -169,6 +169,7 @@ async function run() {
     const repository = getInput("repository");
     const dryRun = core.getInput("dry-run");
     const secrets = getSecrets(core.getInput("secrets"));
+    const atomic = getInput("atomic") || true;
 
     core.debug(`param: track = "${track}"`);
     core.debug(`param: release = "${release}"`);
@@ -185,6 +186,7 @@ async function run() {
     core.debug(`param: removeCanary = ${removeCanary}`);
     core.debug(`param: timeout = "${timeout}"`);
     core.debug(`param: repository = "${repository}"`);
+    core.debug(`param: atomic = "${atomic}"`);
 
 
     // Setup command options and arguments.
@@ -194,7 +196,6 @@ async function run() {
       chart,
       "--install",
       "--wait",
-      "--atomic",
       `--namespace=${namespace}`,
     ];
 
@@ -223,6 +224,11 @@ async function run() {
       args.push("--set=service.enabled=false", "--set=ingress.enabled=false");
     }
 
+    // If true upgrade process rolls back changes made in case of failed upgrade.
+    if (atomic === true) {
+      args.push("--atomic");
+    }
+
     // Setup necessary files.
     if (process.env.KUBECONFIG_FILE) {
       process.env.KUBECONFIG = "./kubeconfig.yml";