Add server-unix-socket config option (#1303)

Add ncat workaround to test socket connection on CircleCI

test/SpecHelper.hs

@@ -64,6 +64,8 @@ getEnvVarWithDefault var def = toS <$>
 _baseCfg :: AppConfig
 _baseCfg =  -- Connection Settings
   AppConfig mempty "postgrest_test_anonymous" Nothing "test" "localhost" 3000
+            -- No user configured Unix Socket
+            Nothing
             -- Jwt settings
             (Just $ encodeUtf8 "reallyreallyreallyreallyverysafe") False Nothing
             -- Connection Modifiers

test/io-tests.sh

@@ -181,6 +181,30 @@ ensureAppSettings(){
   pgrStop
 }
 
+getSocketStatus() {
+  curl -sL -w "%{http_code}\\n" -o /dev/null localhost:54321
+}
+
+socketConnection(){
+  # map port 54321 traffic to unix socket as workaround for curl below 7.40
+  # not supporting --unix-socket flag
+  ncat -vlk 54321 -c 'ncat -U /tmp/postgrest.sock' &
+  pgrStart "./configs/unix-socket.config"
+  while pgrStarted && test "$( getSocketStatus )" -ne 200
+  do
+    # wait for the server to start
+    sleep 0.1 \
+    || sleep 1 # fallback: subsecond sleep is not standard and may fail
+  done
+  if test $( getSocketStatus ) -eq 200
+  then
+    ok "Succesfully connected through unix socket"
+  else
+    ko "Failed to connect through unix socket"
+  fi
+  pgrStop
+}
+
 # PRE: curl must be available
 test -n "$(command -v curl)" || bailOut 'curl is not available'
 
@@ -191,6 +215,8 @@ setUp
 
 echo "Running IO tests.."
 
+socketConnection
+
 readSecretFromFile word.noeol 'simple (no EOL)'
 readSecretFromFile word.txt 'simple'
 readSecretFromFile ascii.noeol 'ASCII (no EOL)'
@@ -224,6 +250,7 @@ invalidRoleClaimKey 1234
 ensureIatClaimWorks
 ensureAppSettings
 
+
 cleanUp
 
 exit $failedTests

test/io-tests/configs/unix-socket.config

@@ -0,0 +1,7 @@
+db-uri = "postgres:///postgrest_test"
+db-schema = "test"
+db-anon-role = "postgrest_test_anonymous"
+db-pool = 1
+server-host = "127.0.0.1"
+server-unix-socket = "/tmp/postgrest.sock"
+jwt-secret = "reallyreallyreallyreallyverysafe"