adds verification of dependency versions on plugin installation

scm-webapp/src/main/java/sonia/scm/plugin/DependencyVersionMismatchException.java

@@ -0,0 +1,60 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020-present Cloudogu GmbH and Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package sonia.scm.plugin;
+
+import lombok.Getter;
+
+import static sonia.scm.ContextEntry.ContextBuilder.entity;
+
+@Getter
+@SuppressWarnings("java:S110")
+public class DependencyVersionMismatchException extends PluginInstallException {
+
+  private final String plugin;
+  private final String dependency;
+  private final String minVersion;
+  private final String currentVersion;
+
+  public DependencyVersionMismatchException(String plugin, String dependency, String minVersion, String currentVersion) {
+    super(
+      entity("Dependency", dependency)
+        .in("Plugin", plugin)
+        .build(),
+      String.format(
+        "%s requires dependency %s at least in version %s, but it is installed in version %s",
+        plugin, dependency, minVersion, currentVersion
+      )
+    );
+    this.plugin = plugin;
+    this.dependency = dependency;
+    this.minVersion = minVersion;
+    this.currentVersion = currentVersion;
+  }
+
+  @Override
+  public String getCode() {
+    return null;
+  }
+}