Feat/92 health check

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.3.1] - 2023-06-23
+
+### Added
+
+- #92: Endpoint (`/api/live/`) for checking health status.
+
 ## [2.3.0] - 2023-05-30
 
 ### Added

Cryptgeon.postman_collection.json

@@ -1,6 +1,6 @@
 {
 	"info": {
-		"_postman_id": "52d9e661-2d99-47f8-b09a-40b6a1c0b364",
+		"_postman_id": "3aaeac19-4eac-4911-b3c8-912b17a48634",
 		"name": "Cryptgeon",
 		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json"
 	},
@@ -137,7 +137,7 @@
 								}
 							],
 							"cookie": [],
-							"body": null
+							"body": ""
 						}
 					]
 				},
@@ -479,7 +479,7 @@
 								}
 							],
 							"cookie": [],
-							"body": null
+							"body": ""
 						}
 					]
 				}
@@ -489,7 +489,7 @@
 			"name": "Status",
 			"item": [
 				{
-					"name": "Get",
+					"name": "Get server status",
 					"request": {
 						"method": "GET",
 						"header": [],
@@ -554,6 +554,106 @@
 							"body": "{\n    \"version\": \"2.3.0-beta.4\",\n    \"max_size\": 10485760,\n    \"max_views\": 100,\n    \"max_expiration\": 360,\n    \"allow_advanced\": true,\n    \"theme_image\": \"\",\n    \"theme_text\": \"\",\n    \"theme_page_title\": \"\",\n    \"theme_favicon\": \"\"\n}"
 						}
 					]
+				},
+				{
+					"name": "Health Check",
+					"request": {
+						"method": "GET",
+						"header": [],
+						"url": {
+							"raw": "{{BASE}}/live/",
+							"host": [
+								"{{BASE}}"
+							],
+							"path": [
+								"live",
+								""
+							]
+						},
+						"description": "Return `200` for healthy service. `503` if service is unavailable."
+					},
+					"response": [
+						{
+							"name": "Healthy",
+							"originalRequest": {
+								"method": "GET",
+								"header": [],
+								"url": {
+									"raw": "{{BASE}}/live/",
+									"host": [
+										"{{BASE}}"
+									],
+									"path": [
+										"live",
+										""
+									]
+								}
+							},
+							"status": "OK",
+							"code": 200,
+							"_postman_previewlanguage": "plain",
+							"header": [
+								{
+									"key": "transfer-encoding",
+									"value": "chunked"
+								},
+								{
+									"key": "vary",
+									"value": "accept-encoding"
+								},
+								{
+									"key": "content-encoding",
+									"value": "gzip"
+								},
+								{
+									"key": "date",
+									"value": "Thu, 22 Jun 2023 20:17:58 GMT"
+								}
+							],
+							"cookie": [],
+							"body": null
+						},
+						{
+							"name": "Service Unavilable",
+							"originalRequest": {
+								"method": "GET",
+								"header": [],
+								"url": {
+									"raw": "{{BASE}}/live/",
+									"host": [
+										"{{BASE}}"
+									],
+									"path": [
+										"live",
+										""
+									]
+								}
+							},
+							"status": "Service Unavailable",
+							"code": 503,
+							"_postman_previewlanguage": "plain",
+							"header": [
+								{
+									"key": "transfer-encoding",
+									"value": "chunked"
+								},
+								{
+									"key": "content-encoding",
+									"value": "gzip"
+								},
+								{
+									"key": "vary",
+									"value": "accept-encoding"
+								},
+								{
+									"key": "date",
+									"value": "Thu, 22 Jun 2023 20:18:55 GMT"
+								}
+							],
+							"cookie": [],
+							"body": null
+						}
+					]
 				}
 			]
 		}

Dockerfile

@@ -21,6 +21,7 @@ RUN cargo build --release
 # RUNNER
 FROM alpine
 WORKDIR /app
+RUN apk add --no-cache curl 
 COPY --from=backend /tmp/target/release/cryptgeon .
 COPY --from=client /tmp/packages/frontend/build ./frontend
 ENV FRONTEND_PATH="./frontend"

README.md

@@ -78,7 +78,9 @@ of the notes even if it tried to.
 
 ## Deployment
 
-ℹ️ `https` is required otherwise browsers will not support the cryptographic functions.
+> ℹ️ `https` is required otherwise browsers will not support the cryptographic functions.
+
+> ℹ️ There is a health endpoint available at `/api/health/`. It returns either 200 or 503.
 
 ### Docker
 
@@ -94,7 +96,7 @@ services:
     image: redis:7-alpine
     # Set a size limit. See link below on how to customise.
     # https://redis.io/docs/manual/eviction/
-    command: redis-server --maxmemory 1gb --maxmemory-policy allkeys-lru
+    # command: redis-server --maxmemory 1gb --maxmemory-policy allkeys-lru
 
   app:
     image: cupcakearmy/cryptgeon:latest
@@ -105,6 +107,14 @@ services:
       SIZE_LIMIT: 4 MiB
     ports:
       - 80:8000
+
+    # Optional health checks
+    # healthcheck:
+    #   test: ["CMD", "curl", "--fail", "http://127.0.0.1:8000/api/live/"]
+    #   interval: 1m
+    #   timeout: 3s
+    #   retries: 2
+    #   start_period: 5s
 ```
 
 ### NGINX Proxy

docker-compose.dev.yaml

@@ -16,3 +16,10 @@ services:
       - redis
     ports:
       - 1234:8000
+
+    healthcheck:
+      test: ["CMD", "curl", "--fail", "http://127.0.0.1:8000/api/live/"]
+      interval: 1m
+      timeout: 3s
+      retries: 2
+      start_period: 5s

docker-compose.yaml

@@ -16,3 +16,11 @@ services:
       SIZE_LIMIT: 4 MiB
     ports:
       - 80:8000
+
+    # Optional health checks
+    # healthcheck:
+    #   test: ["CMD", "curl", "--fail", "http://127.0.0.1:8000/api/live/"]
+    #   interval: 1m
+    #   timeout: 3s
+    #   retries: 2
+    #   start_period: 5s

package.json

@@ -1,5 +1,5 @@
 {
-  "packageManager": "pnpm@8.5.1",
+  "packageManager": "pnpm@8.6.3",
   "scripts": {
     "dev:docker": "docker-compose -f docker-compose.dev.yaml up redis",
     "dev:packages": "pnpm --parallel run dev",