Scale deployment to zero when function is in idle state (#775)

test/tests/test_fn_update/test_idle_objects_reaper.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+
+#test:disabled
+
+set -euo pipefail
+
+source $(dirname $0)/fnupdate_utils.sh
+
+env=python-$(date +%s)
+fn=hellopython-$(date +%s)
+ROOT=$(dirname $0)/../../..
+
+cleanup() {
+    log "Cleaning up..."
+    fission fn delete --name ${fn}-nd || true
+    fission fn delete --name ${fn}-gpm || true
+    fission env delete --name $env || true
+}
+
+cleanup
+if [ -z "${TEST_NOCLEANUP:-}" ]; then
+    trap cleanup EXIT
+else
+    log "TEST_NOCLEANUP is set; not cleaning up test artifacts afterwards."
+fi
+
+log "Creating Python env $env"
+fission env create --name $env --image fission/python-env --period 5
+
+log "Creating function ${fn}-nd, ${fn}-gpm"
+fission fn create --name ${fn}-nd --env $env --code $ROOT/examples/python/hello.py --minscale 0 --maxscale 2 --executortype newdeploy
+fission fn create --name ${fn}-gpm --env $env --code $ROOT/examples/python/hello.py
+
+log "Creating route for function $fn"
+fission route create --function ${fn}-nd --url /${fn}-nd --method GET
+fission route create --function ${fn}-gpm --url /${fn}-gpm --method GET
+
+log "Waiting for update to catch up"
+sleep 5
+
+timeout 60 bash -c "test_fn ${fn}-nd 'world'"
+timeout 60 bash -c "test_fn ${fn}-gpm 'world'"
+
+log "Waiting for idle pod reaper to recycle resources"
+# the LIST_OLD function list fsvc older than 2 mins
+# so in worst case, we need to wait for up to 4 mins + some buffer
+sleep 260
+
+# The replicas of function deployment should be 0 due to minScale = 0
+ndDeployReplicas=$(kubectl -n $FUNCTION_NAMESPACE get deploy -l functionName=${fn}-nd -ojsonpath='{.items[0].spec.replicas}')
+if [ "$ndDeployReplicas" -ne "0" ]
+then
+  log "Failed to reap idle function pod for function ${fn}-nd"
+  exit 1
+fi
+
+gpmNumberOfPod=$(kubectl -n $FUNCTION_NAMESPACE get pod -l functionName=${fn}-gpm -o name|wc -l)
+if [ "$gpmNumberOfPod" -ne "0" ]
+then
+  log "Failed to reap idle function pod for function ${fn}-gpm"
+  exit 1
+fi
+
+# The executor will scale the deployment from 0 to minScale.
+# If minScale is 0 then scale to 1 instead.
+timeout 60 bash -c "test_fn ${fn}-nd 'world'"
+timeout 60 bash -c "test_fn ${fn}-gpm 'world'"
+
+# The replicas of function deployment should be scaled to 1 due to minScale is 0
+ndDeployReplicas=$(kubectl -n $FUNCTION_NAMESPACE get deploy -l functionName=${fn}-nd -ojsonpath='{.items[0].spec.replicas}')
+if [ "$ndDeployReplicas" -ne "1" ]
+then
+  log "Failed to reap idle function pod for function ${fn}-nd"
+  exit 1
+fi
+
+gpmNumberOfPod=$(kubectl -n $FUNCTION_NAMESPACE get pod -l functionName=${fn}-gpm -o name|wc -l)
+if [ "$gpmNumberOfPod" -ne "1" ]
+then
+  log "Failed to reap idle function pod for function ${fn}-gpm"
+  exit 1
+fi

test/tests/test_fn_update/test_scale_change.sh

@@ -57,4 +57,4 @@ then
   exit 1
 fi
 
-timeout 60 bash -c "test_fn $fn 'world'"
+timeout 60 bash -c "test_fn $fn 'world'"