move creating the config file to a js file

docker-entrypoint.js

@@ -0,0 +1,105 @@
+const { promisify } = require("util");
+const {
+  HOST,
+  PORT,
+  KEY_LENGTH,
+  MAX_LENGTH,
+  STATIC_MAX_AGE,
+  RECOMPRESS_STATIC_ASSETS,
+  STORAGE_TYPE,
+  STORAGE_HOST,
+  STORAGE_PORT,
+  STORAGE_EXPIRE_SECONDS,
+  STORAGE_DB,
+  STORAGE_AWS_BUCKET,
+  STORAGE_AWS_REGION,
+  STORAGE_PG_PASSWORD,
+  STORAGE_PG_USERNAME,
+  LOGGING_LEVEL,
+  LOGGING_TYPE,
+  LOGGING_COLORIZE,
+  KEYGENERATOR_TYPE,
+  KEY_GENERATOR_KEYSPACE,
+  RATE_LIMITS_NORMAL_TOTAL_REQUESTS,
+  RATE_LIMITS_NORMAL_EVERY_SECONDS,
+  RATE_LIMITS_WHITELIST_TOTAL_REQUESTS,
+  RATE_LIMITS_WHITELIST_EVERY_SECONDS,
+  RATE_LIMITS_WHITELIST,
+  RATE_LIMITS_BLACKLIST_TOTAL_REQUESTS,
+  RATE_LIMITS_BLACKLIST_EVERY_SECONDS,
+  RATE_LIMITS_BLACKLIST,
+  DOCUMENTS,
+} = process.env;
+
+const config = {
+  host: HOST,
+  port: PORT,
+
+  keyLength: KEY_LENGTH,
+
+  maxLength: MAX_LENGTH,
+
+  staticMaxAge: STATIC_MAX_AGE,
+
+  recompressStaticAssets: RECOMPRESS_STATIC_ASSETS,
+
+  logging: [
+    {
+      level: LOGGING_LEVEL,
+      type: LOGGING_TYPE,
+      colorize: LOGGING_COLORIZE,
+    },
+  ],
+
+  keyGenerator: {
+    type: KEYGENERATOR_TYPE,
+    keyspace: KEY_GENERATOR_KEYSPACE,
+  },
+
+  rateLimits: {
+    whitelist: RATE_LIMITS_WHITELIST ? RATE_LIMITS_WHITELIST.split(",") : [],
+    blacklist: RATE_LIMITS_BLACKLIST ? RATE_LIMITS_BLACKLIST.split(",") : [],
+    categories: {
+      normal: {
+        totalRequests: RATE_LIMITS_NORMAL_TOTAL_REQUESTS,
+        every: RATE_LIMITS_NORMAL_EVERY_SECONDS,
+      },
+      whitelist:
+        RATE_LIMITS_WHITELIST_EVERY_SECONDS ||
+        RATE_LIMITS_WHITELIST_TOTAL_REQUESTS
+          ? {
+              totalRequests: RATE_LIMITS_WHITELIST_TOTAL_REQUESTS,
+              every: RATE_LIMITS_WHITELIST_EVERY_SECONDS,
+            }
+          : null,
+      blacklist:
+        RATE_LIMITS_BLACKLIST_EVERY_SECONDS ||
+        RATE_LIMITS_BLACKLIST_TOTAL_REQUESTS
+          ? {
+              totalRequests: RATE_LIMITS_WHITELIST_TOTAL_REQUESTS,
+              every: RATE_LIMITS_BLACKLIST_EVERY_SECONDS,
+            }
+          : null,
+    },
+  },
+
+  storage: {
+    type: STORAGE_TYPE,
+    host: STORAGE_HOST,
+    port: STORAGE_PORT,
+    expire: STORAGE_EXPIRE_SECONDS,
+    bucket: STORAGE_AWS_BUCKET,
+    region: STORAGE_AWS_REGION,
+    connectionUrl: `postgres://${STORAGE_PG_USERNAME}:${STORAGE_PG_PASSWORD}@${STORAGE_HOST}:${STORAGE_PORT}/${STORAGE_DB}`,
+    db: STORAGE_DB,
+  },
+
+  documents: DOCUMENTS
+    ? DOCUMENTS.split(",").reduce((acc, item) => {
+        const keyAndValueArray = item.replace(/\s/g, "").split("=");
+        return { ...acc, [keyAndValueArray[0]]: keyAndValueArray[1] };
+      }, {})
+    : null,
+};
+
+console.log(JSON.stringify(config));

docker-entrypoint.sh

@@ -3,81 +3,7 @@
 # We use this file to translate environmental variables to .env files used by the application
 
 set -e
-function create_document_string () {
-    IFS=',' read -ra doc_array <<< "$DOCUMENTS"
-    document_string="{"
-
-    for i in "${doc_array[@]}"
-    do
-        IFS='=' read -ra document <<< "$i"
-        document_string+="\"${document[0]}\": \"${document[1]}\","
-    done
-
-    # Remove trailing "," 
-    [[ "$document_string" == *, ]] && document_string=${document_string::${#document_string}-1}
-    document_string+="}"
-    echo $document_string
-}
-
-document_string=$(create_document_string)
-
-echo "
-{
-
-  \"host\": \"$HOST\",
-  \"port\": ${PORT},
-
-  \"keyLength\": $KEY_LENGTH,
-
-  \"maxLength\": $MAX_LENGTH,
-
-  \"staticMaxAge\": $STATIC_MAX_AGE,
-
-  \"recompressStaticAssets\": $RECOMPRESS_STATIC_ASSETS,
-
-  \"logging\": [
-    {
-      \"level\": \"$LOGGING_LEVEL\",
-      \"type\": \"$LOGGING_TYPE\",
-      \"colorize\": $LOGGING_COLORIZE
-    }
-  ],
-
-  \"keyGenerator\": {
-    \"type\": \"$KEYGENERATOR_TYPE\"
-  },
-
-  \"rateLimits\": {
-
-    \"categories\": {
-      \"normal\": {
-        \"totalRequests\": $RATELIMITS_NORMAL_TOTAL_REQUESTS,
-        \"every\": $RATELIMITS_NORMAL_EVERY_SECONDS
-      },
-      \"whitelist\": {
-        \"totalRequests\": $RATELIMITS_WHITELIST_TOTAL_REQUESTS,
-        \"every\": $RATELIMITS_WHITELIST_EVERY_SECONDS
-      },
-      \"blacklist\": {
-        \"totalRequests\": $RATELIMITS_BLACKLIST_TOTAL_REQUESTS,
-        \"every\": $RATELIMITS_BLACKLIST_EVERY_SECONDS
-      }
-    }
-  },
-
-  \"storage\": {
-    \"type\": \"$STORAGE_TYPE\",
-    \"host\": \"$STORAGE_HOST\",
-    \"port\":  $STORAGE_PORT,
-    \"expire\": $STORAGE_EXPIRE_SECONDS,
-    \"db\": $STORAGE_DB
-  },
-
-  \"documents\": $document_string
-
-}
-" > config.js
-
 
+node ./docker-entrypoint.js > ./config.js
 
 exec "$@"