Allow embedded jetty to serve an external resources directory

docker/README.md

@@ -0,0 +1,5 @@
+To run Pairgoth under docker:
+
+- compile Pairgoth and copy `application/target/pairgoth-engine.jar` to `docker/data/app`
+- copy `pairgoth.properties.example` to `docker/data/app/pairgoth.properties` and adapt it to your needs
+- launch `./run.sh` from within the `docker` directory

docker/pairgoth.properties.example

@@ -0,0 +1,2 @@
+auth = none
+

pairgoth-common/src/main/kotlin/org/jeudego/pairgoth/web/BaseWebappManager.kt

@@ -119,6 +119,8 @@ abstract class BaseWebappManager(val webappName: String, loggerName: String) : S
             // fail to correctly implement SSL...
             disableSSLCertificateChecks()
 
+            logger.info("webapp ${webappName} root filesystem path: ${context.getRealPath("")}")
+
         } catch (ioe: IOException) {
             logger.error("webapp initialization error", ioe)
         }

view-webapp/src/main/kotlin/org/jeudego/pairgoth/web/WebappManager.kt

@@ -6,6 +6,7 @@ import org.jeudego.pairgoth.ratings.RatingsManager
 import org.jeudego.pairgoth.util.Translator
 import org.slf4j.LoggerFactory
 import java.io.IOException
+import java.nio.file.Paths
 import java.security.SecureRandom
 import java.security.cert.X509Certificate
 import java.util.*
@@ -14,6 +15,8 @@ import javax.servlet.*
 import javax.servlet.annotation.WebListener
 import javax.servlet.http.HttpSessionEvent
 import javax.servlet.http.HttpSessionListener
+import kotlin.io.path.createSymbolicLinkPointingTo
+import kotlin.io.path.exists
 
 @WebListener
 class WebappManager : BaseWebappManager("View Webapp", "view") {
@@ -22,6 +25,17 @@ class WebappManager : BaseWebappManager("View Webapp", "view") {
     override fun contextInitialized(sce: ServletContextEvent) {
         super.contextInitialized(sce)
 
+        // create a symlink for external resources access
+        properties.getProperty("cwd")?.let { cwd ->
+            val target = Paths.get(cwd).resolve("resources")
+            if (target.exists()) {
+                val source = Paths.get(context.getRealPath("/")).resolve("resources")
+                if (!source.exists()) {
+                    source.createSymbolicLinkPointingTo(target)
+                }
+            }
+        }
+
         // publish some properties to the webapp context; for easy access from the template
         context.setAttribute("env", properties.getProperty("env") ?: "dev")
         context.setAttribute("version", properties.getProperty("version") ?: "?")

webserver/src/main/kotlin/org/jeudego/pairgoth/application/Pairgoth.kt

@@ -23,6 +23,7 @@ import java.net.URLDecoder
 import java.nio.charset.StandardCharsets
 import java.nio.file.Files
 import java.nio.file.Path
+import java.nio.file.Paths
 import java.security.KeyFactory
 import java.security.KeyStore
 import java.security.cert.CertificateFactory
@@ -109,10 +110,11 @@ private fun publishProperties() {
         }
     }
     // we want colorized output on linux
-    if (System.getProperty("os.name") == "Linux")
+    if (System.getProperty("os.name") == "Linux") {
-    {
         System.setProperty("org.eclipse.jetty.logging.appender.MESSAGE_ESCAPE", "false");
     }
+    // remember the current working directory
+    System.setProperty("pairgoth.cwd", Paths.get("").toAbsolutePath().toString())
 }
 
 private fun extractWarFiles() {
@@ -219,6 +221,8 @@ private fun createContext(webapp: String, contextPath: String) = WebAppContext()
     context.contextPath = contextPath
     if (webapp == "api") {
         context.allowNullPathInfo = true
+    } else {
+
     }
 }