From caf851a538991d723cb6ec25675ecf25d7d84591 Mon Sep 17 00:00:00 2001
From: "Stephen M. Coakley" <me@stephencoakley.com>
Date: Thu, 28 Jun 2018 16:26:24 -0500
Subject: [PATCH] Better error handling and logs

---
 .../widen/versioning/VersionGenerator.java    |  5 ++--
 .../widen/versioning/VersioningPlugin.java    | 28 +++++++++++++------
 2 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/src/main/java/com/widen/versioning/VersionGenerator.java b/src/main/java/com/widen/versioning/VersionGenerator.java
index 9efcaf5..26f675f 100644
--- a/src/main/java/com/widen/versioning/VersionGenerator.java
+++ b/src/main/java/com/widen/versioning/VersionGenerator.java
@@ -60,11 +60,12 @@ public static String gitDescribe(Settings settings, File projectDir) {
 
             process.waitFor();
             if (process.exitValue() != 0 || output.isEmpty()) {
-                return null;
+                throw new RuntimeException("Git returned status code " + process.exitValue() + ": " + output);
             }
 
             return output;
-        } catch (Exception e) {
+        }
+        catch (Exception e) {
             throw new RuntimeException(e);
         }
     }
diff --git a/src/main/java/com/widen/versioning/VersioningPlugin.java b/src/main/java/com/widen/versioning/VersioningPlugin.java
index b5cfee9..4aab246 100644
--- a/src/main/java/com/widen/versioning/VersioningPlugin.java
+++ b/src/main/java/com/widen/versioning/VersioningPlugin.java
@@ -16,14 +16,24 @@ public void apply(final Project project) {
         task.doLast(t -> System.out.println(project.getVersion()));
 
         // Defer setting the version until after the build script is evaluated.
-        project.afterEvaluate(p -> {
-            String version = VersionGenerator.generateFromGit(settings, p.getRootProject().getProjectDir());
-            if (version != null) {
-                p.setVersion(version);
-            }
-            else if ("unspecified".equals(p.getVersion())) {
-                p.setVersion(settings.initialVersion);
-            }
-        });
+        project.afterEvaluate(p -> applyVersion(project, settings));
+    }
+
+    private void applyVersion(final Project project, final Settings settings) {
+        String version = null;
+        try {
+            version = VersionGenerator.generateFromGit(settings, project.getRootProject().getProjectDir());
+        }
+        catch (Exception e) {
+            project.getLogger().warn("Error trying to determine project version", e);
+        }
+
+        if (version != null) {
+            project.setVersion(version);
+        }
+        else if ("unspecified".equals(project.getVersion())) {
+            project.getLogger().debug("No version specified, using initial version");
+            project.setVersion(settings.initialVersion);
+        }
     }
 }