1 files changed, 72 insertions, 0 deletions
diff --git a/container-core/src/main/java/com/yahoo/container/core/config/PlatformBundleLoader.java b/container-core/src/main/java/com/yahoo/container/core/config/PlatformBundleLoader.java
new file mode 100644
index 00000000000..0ab89e223f6
--- /dev/null
+++ b/container-core/src/main/java/com/yahoo/container/core/config/PlatformBundleLoader.java
@@ -0,0 +1,72 @@
+package com.yahoo.container.core.config;
+
+import com.yahoo.osgi.Osgi;
+import org.osgi.framework.Bundle;
+
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.logging.Logger;
+
+/**
+ * Used to install the bundles that are added as platform bundles by the config-model.
+ *
+ * All platform bundles reside on disk, and they are never uninstalled.
+ * Platform bundles are allowed to pre-install other bundles on disk via the
+ * X-JDisc-Preinstall-Bundle manifest header.
+ *
+ * Attempts to install additional bundles, after the first call, should be a NOP.
+ *
+ * @author gjoranv
+ */
+public class PlatformBundleLoader {
+    private static final Logger log = Logger.getLogger(PlatformBundleLoader.class.getName());
+
+    private final Osgi osgi;
+    private final DiskBundleInstaller installer;
+
+    private Set<Bundle> installedBundles;
+    private boolean hasLoadedBundles = false;
+
+    public PlatformBundleLoader(Osgi osgi) {
+        this(osgi, new DiskBundleInstaller());
+    }
+
+    PlatformBundleLoader(Osgi osgi, DiskBundleInstaller installer) {
+        this.osgi = osgi;
+        this.installer = installer;
+    }
+
+    public void useBundles(List<String> bundlePaths) {
+        if (hasLoadedBundles) {
+            log.fine(() -> "Platform bundles have already been installed." +
+                    "\nInstalled bundles: " + installedBundles +
+                    "\nGiven files: " + bundlePaths);
+            return;
+        }
+        installedBundles = install(bundlePaths);
+        BundleStarter.startBundles(installedBundles);
+        hasLoadedBundles = true;
+    }
+
+    private Set<Bundle> install(List<String> bundlesToInstall) {
+        var allInstalled = new LinkedHashSet<Bundle>();
+        for (String bundlePath : bundlesToInstall) {
+            try {
+                allInstalled.addAll(installBundleFromDisk(bundlePath));
+            }
+            catch(Exception e) {
+                throw new RuntimeException("Could not install bundle '" + bundlePath + "'", e);
+            }
+        }
+        return allInstalled;
+    }
+
+    private List<Bundle> installBundleFromDisk(String bundlePath) {
+        log.info("Installing bundle from disk: " + bundlePath);
+        List<Bundle> bundles = installer.installBundles(bundlePath, osgi);
+        log.fine("Installed " + bundles.size() + " bundles for file " + bundlePath);
+        return bundles;
+    }
+
+}