paolosalvatori · Oct 29, 2026 · Oct 29, 2026 · Oct 29, 2026 · Oct 29, 2026 · Oct 29, 2026
@@ -209,6 +209,28 @@ host_arch() {
   esac
 }
 
+# Set PREFIX, from which every sample builds its resource group and resource names ("local" by default), to the
+# letter l and four random lowercase letters, never the previous sample's. The cleanup after each sample deletes
+# every resource group with --no-wait, so a sample that reused the previous one's names could write into a group
+# still being deleted: Azure refuses that with 409 ResourceGroupBeingDeleted, and an emulator that accepts it
+# leaves the new resources behind once the group is gone. Giving every sample its own names avoids both without
+# waiting for the deletes. The prefix keeps the length and the characters of "local", so no name changes length.
+# $RANDOM in this shell rather than a pipeline from /dev/urandom: under pipefail, the SIGPIPE that head gives tr
+# would end the script.
+set_sample_name_prefix() {
+  local letters=abcdefghijklmnopqrstuvwxyz previous="${PREFIX:-}" i
+  while true; do
+    PREFIX=l
+    for (( i = 0; i < 4; i++ )); do
+      PREFIX+="${letters:RANDOM % 26:1}"
+    done
+    if [[ "$PREFIX" != "$previous" ]]; then
+      break
+    fi
+  done
+  export PREFIX
+}
+
 # 2. Handle --list flag: output JSON metadata for CI matrix generation (no tools required)
 #    Each entry has: shard (1-based index), splits (total count), name, watch_folders,
 #    and arches. CI uses watch_folders to detect which tests are affected by changed
@@ -368,6 +390,9 @@ for (( i=START; i<START+COUNT; i++ )); do
     echo "      amd64. Set SKIP_AMD64_ONLY=1 to skip these instead."
   fi
 
+  set_sample_name_prefix
+  echo "Name prefix: $PREFIX"
+
   pushd "$path" > /dev/null
 
   # Deploy a Terraform sample from empty state. A failed run skips the cleanup below and leaves

@@ -4,7 +4,7 @@
 set -x
 
 # Variables
-PREFIX='local'
+PREFIX="${PREFIX:-local}"
 SUFFIX='test'
 TEMPLATE="main.bicep"
 PARAMETERS="main.bicepparam"
@@ -42,7 +42,7 @@ if [[ $? != 0 ]]; then
 		echo "Resource group [$RESOURCE_GROUP_NAME] successfully created in the subscription [$SUBSCRIPTION_NAME]"
 	else
 		echo "Failed to create resource group [$RESOURCE_GROUP_NAME] in the subscription [$SUBSCRIPTION_NAME]"
-		exit
+		exit 1
 	fi
 else
 	echo "Resource group [$RESOURCE_GROUP_NAME] already exists in the subscription [$SUBSCRIPTION_NAME]"
@@ -131,7 +131,7 @@ if [[ $VALIDATE_TEMPLATE == 1 ]]; then
 			echo "Bicep template [$TEMPLATE] validation succeeded"
 		else
 			echo "Failed to validate Bicep template [$TEMPLATE]"
-			exit
+			exit 1
 		fi
 	else
 		# Validate the Bicep template
@@ -150,7 +150,7 @@ if [[ $VALIDATE_TEMPLATE == 1 ]]; then
 		else
 			echo "Failed to validate Bicep template [$TEMPLATE]"
 			echo "$output"
-			exit
+			exit 1
 		fi
 	fi
 fi

@@ -8,7 +8,7 @@
 # =============================================================================
 
 # Variables (must match deploy.sh)
-PREFIX='local'
+PREFIX="${PREFIX:-local}"
 RESOURCE_GROUP_NAME="${PREFIX}-aci-rg"
 ACI_GROUP_NAME="${PREFIX}-aci-planner"
 ACI_GROUP_ADVANCED="${PREFIX}-aci-planner-advanced"

@@ -11,7 +11,7 @@
 # =============================================================================
 
 # Variables
-PREFIX='local'
+PREFIX="${PREFIX:-local}"
 LOCATION='eastus'
 RESOURCE_GROUP_NAME="${PREFIX}-aci-rg"
 STORAGE_ACCOUNT_NAME="${PREFIX}acistorage"

@@ -8,7 +8,7 @@
 # =============================================================================
 
 # Variables (must match deploy.sh)
-PREFIX='local'
+PREFIX="${PREFIX:-local}"
 LOCATION='eastus'
 RESOURCE_GROUP_NAME="${PREFIX}-aci-rg"
 STORAGE_ACCOUNT_NAME="${PREFIX}acistorage"

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # Variables
-PREFIX='local'
+PREFIX="${PREFIX:-local}"
 SUFFIX='test'
 LOCATION='eastus'
 IMAGE_NAME='vacation-planner'
@@ -20,6 +20,16 @@ cd "$CURRENT_DIR" || exit
 RESOURCE_GROUP_NAME="${PREFIX}-aci-rg"
 ACR_NAME="${PREFIX}aciacr${SUFFIX}"
 
+# Stop if the Terraform state of a previous run tracks another resource group: run under another PREFIX, the
+# apply would replace that run's resource group and delete its resources
+echo "Checking that the Terraform state tracks no resource group other than [$RESOURCE_GROUP_NAME]..."
+STATE_RESOURCE_GROUP_NAME=$(terraform state show -no-color azurerm_resource_group.example 2>/dev/null | awk '$1 == "name" { gsub(/"/, "", $3); print $3 }')
+
+if [[ -n $STATE_RESOURCE_GROUP_NAME && $STATE_RESOURCE_GROUP_NAME != "$RESOURCE_GROUP_NAME" ]]; then
+	echo "The Terraform state tracks the [$STATE_RESOURCE_GROUP_NAME] resource group of a previous run: delete its terraform.tfstate files, or run with the PREFIX of that run"
+	exit 1
+fi
+
 echo "Creating resource group [$RESOURCE_GROUP_NAME]..."
 az group create \
 	--name "$RESOURCE_GROUP_NAME" \

@@ -4,7 +4,7 @@
 set -x
 
 # Variables
-PREFIX='local'
+PREFIX="${PREFIX:-local}"
 SUFFIX='test'
 TEMPLATE="main.bicep"
 PARAMETERS="main.bicepparam"
@@ -43,7 +43,7 @@ if [[ $? != 0 ]]; then
 		echo "Resource group [$RESOURCE_GROUP_NAME] successfully created in the subscription [$SUBSCRIPTION_NAME]"
 	else
 		echo "Failed to create resource group [$RESOURCE_GROUP_NAME] in the subscription [$SUBSCRIPTION_NAME]"
-		exit
+		exit 1
 	fi
 else
 	echo "Resource group [$RESOURCE_GROUP_NAME] already exists in the subscription [$SUBSCRIPTION_NAME]"
@@ -65,27 +65,55 @@ az acr create \
 	--admin-enabled true \
 	--only-show-errors 1>/dev/null
 
+if [[ $? == 0 ]]; then
+	echo "[$ACR_NAME] container registry successfully created in the [$RESOURCE_GROUP_NAME] resource group"
+else
+	echo "Failed to create [$ACR_NAME] container registry in the [$RESOURCE_GROUP_NAME] resource group"
+	exit 1
+fi
+
 LOGIN_SERVER=$(az acr show \
 	--name "$ACR_NAME" \
 	--resource-group "$RESOURCE_GROUP_NAME" \
 	--query "loginServer" \
 	--output tsv \
 	--only-show-errors)
 
+if [[ -n $LOGIN_SERVER ]]; then
+	echo "Successfully retrieved the login server of the [$ACR_NAME] container registry"
+else
+	echo "Failed to retrieve the login server of the [$ACR_NAME] container registry"
+	exit 1
+fi
+
 ACR_USERNAME=$(az acr credential show \
 	--name "$ACR_NAME" \
 	--resource-group "$RESOURCE_GROUP_NAME" \
 	--query "username" \
 	--output tsv \
 	--only-show-errors)
 
+if [[ -n $ACR_USERNAME ]]; then
+	echo "Successfully retrieved the admin username of the [$ACR_NAME] container registry"
+else
+	echo "Failed to retrieve the admin username of the [$ACR_NAME] container registry"
+	exit 1
+fi
+
 ACR_PASSWORD=$(az acr credential show \
 	--name "$ACR_NAME" \
 	--resource-group "$RESOURCE_GROUP_NAME" \
 	--query "passwords[0].value" \
 	--output tsv \
 	--only-show-errors)
 
+if [[ -n $ACR_PASSWORD ]]; then
+	echo "Successfully retrieved the admin password of the [$ACR_NAME] container registry"
+else
+	echo "Failed to retrieve the admin password of the [$ACR_NAME] container registry"
+	exit 1
+fi
+
 FULL_IMAGE="${LOGIN_SERVER}/${IMAGE_NAME}:${IMAGE_TAG}"
 
 echo "Building Docker image [$IMAGE_NAME:$IMAGE_TAG]..."
@@ -98,9 +126,19 @@ fi
 
 docker tag "${IMAGE_NAME}:${IMAGE_TAG}" "$FULL_IMAGE"
 
+if [[ $? != 0 ]]; then
+	echo "Failed to tag Docker image."
+	exit 1
+fi
+
 echo "Logging in to ACR [$LOGIN_SERVER]..."
 echo "$ACR_PASSWORD" | docker login "$LOGIN_SERVER" --username "$ACR_USERNAME" --password-stdin 2>/dev/null
 
+if [[ $? != 0 ]]; then
+	echo "Failed to log in to ACR."
+	exit 1
+fi
+
 echo "Pushing image [$FULL_IMAGE]..."
 docker push "$FULL_IMAGE" 2>/dev/null
 
@@ -133,7 +171,7 @@ if [[ $VALIDATE_TEMPLATE == 1 ]]; then
 			echo "Bicep template [$TEMPLATE] validation succeeded"
 		else
 			echo "Failed to validate Bicep template [$TEMPLATE]"
-			exit
+			exit 1
 		fi
 	else
 		# Validate the Bicep template
@@ -153,7 +191,7 @@ if [[ $VALIDATE_TEMPLATE == 1 ]]; then
 		else
 			echo "Failed to validate Bicep template [$TEMPLATE]"
 			echo "$output"
-			exit
+			exit 1
 		fi
 	fi
 fi

@@ -8,7 +8,7 @@
 # =============================================================================
 
 # Variables (must match deploy.sh)
-PREFIX='local'
+PREFIX="${PREFIX:-local}"
 RESOURCE_GROUP_NAME="${PREFIX}-aca-rg"
 ACA_APP_NAME="${PREFIX}-aca-guestbook"
 ACA_ENV_NAME="${PREFIX}-aca-env"

@@ -17,7 +17,7 @@
 # =============================================================================
 
 # Variables
-PREFIX='local'
+PREFIX="${PREFIX:-local}"
 LOCATION='eastus'
 RESOURCE_GROUP_NAME="${PREFIX}-aca-rg"
 STORAGE_ACCOUNT_NAME="${PREFIX}acastorage"

@@ -20,7 +20,7 @@ null_device() {
 }
 
 # Variables (must match deploy.sh)
-PREFIX='local'
+PREFIX="${PREFIX:-local}"
 LOCATION='eastus'
 RESOURCE_GROUP_NAME="${PREFIX}-aca-rg"
 STORAGE_ACCOUNT_NAME="${PREFIX}acastorage"