From 14d72bd2130cbfaec748f2363c17e6076d12182b Mon Sep 17 00:00:00 2001
From: Steven Borrelli <steve@borrelli.org>
Date: Fri, 6 Mar 2026 09:35:11 +0100
Subject: [PATCH] add getCondition and capabilities example

Signed-off-by: Steven Borrelli <steve@borrelli.org>
---
 package-configuration/crossplane.yaml |  2 +-
 src/function.ts                       | 30 +++++++++++++++++++++++++++
 src/test-helpers.ts                   |  1 -
 3 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/package-configuration/crossplane.yaml b/package-configuration/crossplane.yaml
index 95a1d55..fb95b73 100644
--- a/package-configuration/crossplane.yaml
+++ b/package-configuration/crossplane.yaml
@@ -22,7 +22,7 @@ spec:
     - apiVersion: pkg.crossplane.io/v1
       kind: Function
       package: ghcr.io/crossplane/function-template-typescript
-      version: ">=v0.2.0"
+      version: ">=v0.3.0"
     # Automatically set ready status for resources
     - apiVersion: pkg.crossplane.io/v1
       kind: Function
diff --git a/src/function.ts b/src/function.ts
index 0a4a4b6..f60d6c6 100644
--- a/src/function.ts
+++ b/src/function.ts
@@ -9,6 +9,10 @@ import {
   getDesiredComposedResources,
   getDesiredCompositeResource,
   getObservedCompositeResource,
+  getObservedComposedResources,
+  getCondition,
+  hasCapability,
+  Capability,
   type FunctionHandler,
   type Logger,
 } from '@crossplane-org/function-sdk-typescript';
@@ -54,6 +58,15 @@ export class Function implements FunctionHandler {
     let rsp = to(req);
 
     try {
+      // Example: Check Crossplane capabilities
+      // hasCapability() allows checking what features are supported by the Crossplane version
+      // Starting with 2.2.0 Crossplane added the ability to download schemas.
+      const capabilities = {
+        requiredResources: hasCapability(req, Capability.CAPABILITY_REQUIRED_RESOURCES),
+        requiredSchemas: hasCapability(req, Capability.CAPABILITY_REQUIRED_SCHEMAS),
+      };
+      logger?.info({ capabilities }, 'Crossplane capabilities detected');
+
       // Get our Observed Composite
       const observedComposite = getObservedCompositeResource(req);
       logger?.debug({ observedComposite }, 'Observed composite resource');
@@ -210,6 +223,23 @@ export class Function implements FunctionHandler {
 
       desiredComposed['deployment'] = fromModel(deployment);
 
+      // Example: Check the conditions of the observed deployment
+      // getCondition() extracts status conditions and returns "Unknown" if not found
+      const observedComposed = getObservedComposedResources(req);
+      const observedDeployment = observedComposed['deployment'];
+      if (observedDeployment?.resource) {
+        const availableCondition = getCondition(observedDeployment.resource, 'Available');
+        const progressingCondition = getCondition(observedDeployment.resource, 'Progressing');
+        logger?.info(
+          {
+            deployment: observedDeployment.resource.metadata?.name,
+            available: availableCondition.status,
+            progressing: progressingCondition.status,
+          },
+          'Deployment conditions'
+        );
+      }
+
       // Create Ingress if config is provided
       if (ingressConfig && Object.keys(ingressConfig).length > 0) {
         const ingress = new Ingress({
diff --git a/src/test-helpers.ts b/src/test-helpers.ts
index 37a8a96..b50defc 100644
--- a/src/test-helpers.ts
+++ b/src/test-helpers.ts
@@ -359,7 +359,6 @@ export function assertResourceTypes(response: RunFunctionResponse, expectedTypes
  * Run all assertions for a test case
  */
 export function assertTestCase(response: RunFunctionResponse, testCase: TestCase) {
-
   if (testCase.expected.resources) {
     assertResources(response, testCase.expected.resources);
   }