feat: ARGO_TEMPLATE env var without inputs.parameters (#13742)

Author: tooptoop4

.spelling

@@ -23,6 +23,7 @@
 5xx
 8Ki
 90m
+ARGO_TEMPLATE
 Alexandre
 Alibaba
 Ang
@@ -165,6 +166,7 @@ govaluate
 gzipped
 i.e.
 idempotence
+inputs.parameters
 instantiator
 instantiators
 jenkins

docs/environment-variables.md

@@ -23,6 +23,7 @@ This document outlines environment variables that can be used to customize behav
 | `ARGO_AGENT_CPU_LIMIT`                   | `resource.Quantity` | `100m`                                                                                      | CPU resource limit for the agent.                                                                                                                                                                                                                                        |
 | `ARGO_AGENT_MEMORY_LIMIT`                | `resource.Quantity` | `256m`                                                                                      | Memory resource limit for the agent.                                                                                                                                                                                                                                     |
 | `ARGO_POD_STATUS_CAPTURE_FINALIZER`      | `bool`              | `false`                                                                                     | The finalizer blocks the deletion of pods until the controller captures their status.
+| `ARGO_TEMPLATE_WITH_INPUTS_PARAMETERS`      | `bool`              | `true`                                                                                     | Whether to keep inputs.parameters inside the ARGO_TEMPLATE environment variable of pods.
 | `BUBBLE_ENTRY_TEMPLATE_ERR`              | `bool`              | `true`                                                                                      | Whether to bubble up template errors to workflow.                                                                                                                                                                                                                        |
 | `CACHE_GC_PERIOD`                        | `time.Duration`     | `0s`                                                                                        | How often to perform memoization cache GC, which is disabled by default and can be enabled by providing a non-zero duration.                                                                                                                                             |
 | `CACHE_GC_AFTER_NOT_HIT_DURATION`        | `time.Duration`     | `30s`                                                                                       | When a memoization cache has not been hit after this duration, it will be deleted.                                                                                                                                                                                       |

workflow/controller/workflowpod.go

@@ -297,6 +297,20 @@ func (woc *wfOperationCtx) createWorkflowPod(ctx context.Context, nodeName strin
 	}
 
 	envVarTemplateValue := wfv1.MustMarshallJSON(tmpl)
+	if os.Getenv("ARGO_TEMPLATE_WITH_INPUTS_PARAMETERS") == "false" {
+		tmplWithoutInputs := tmpl.DeepCopy()
+		// Preserve Inputs.Artifacts and clear other inputs
+		var artifacts []wfv1.Artifact
+		if len(tmplWithoutInputs.Inputs.Artifacts) > 0 {
+			artifacts = tmplWithoutInputs.Inputs.Artifacts
+		} else {
+			artifacts = []wfv1.Artifact{}
+		}
+		tmplWithoutInputs.Inputs = wfv1.Inputs{
+			Artifacts: artifacts,
+		}
+		envVarTemplateValue = wfv1.MustMarshallJSON(tmplWithoutInputs)
+	}
 
 	// Add standard environment variables, making pod spec larger
 	envVars := []apiv1.EnvVar{