catch errors running registerCompiler callback

also, add XXX comments about the (very old) issue that source map
filenames are wrong for plugin files

tools/build-plugin.js

@@ -27,11 +27,18 @@ _.extend(exports.SourceProcessor.prototype, {
     }
     // XXX BBP proper error handling --- this is running user-supplied plugin
     // code, and use markBoundary too
-    self.userPlugin = self.factoryFunction.call(null);
-    // If we have a disk cache directory and the plugin wants it, use it.
-    // XXX BBP proper error handling
-    if (self.isopack.pluginCacheDir && self.userPlugin.setDiskCacheDirectory) {
-      self.userPlugin.setDiskCacheDirectory(self.isopack.pluginCacheDir);
+    try {
+      self.userPlugin = buildmessage.markBoundary(self.factoryFunction).call(
+        null);
+      // If we have a disk cache directory and the plugin wants it, use it.
+      if (self.isopack.pluginCacheDir &&
+          self.userPlugin.setDiskCacheDirectory) {
+        const markedMethod = buildmessage.markBoundary(
+          self.userPlugin.setDiskCacheDirectory.bind(self.userPlugin));
+        markedMethod(self.isopack.pluginCacheDir);
+      }
+    } catch (e) {
+      buildmessage.exception(e);
     }
   },
   relevantForArch: function (arch) {

tools/tests/apps/build-plugin-throws-error/.meteor/platforms

@@ -1,2 +0,0 @@
-server
-browser

tools/tests/apps/build-plugin-throws-error/.meteor/versions

@@ -1,49 +0,0 @@
-autopublish@1.0.3
-autoupdate@1.2.1
-base64@1.0.3
-binary-heap@1.0.3
-blaze@2.1.2
-blaze-tools@1.0.3
-boilerplate-generator@1.0.3
-build-plugin@0.0.1
-callback-hook@1.0.3
-check@1.0.5
-ddp@1.1.0
-deps@1.0.7
-ejson@1.0.6
-fastclick@1.0.3
-geojson-utils@1.0.3
-html-tools@1.0.4
-htmljs@1.0.4
-http@1.1.0
-id-map@1.0.3
-insecure@1.0.3
-jquery@1.11.3_2
-json@1.0.3
-launch-screen@1.0.2
-livedata@1.0.13
-logging@1.0.7
-meteor@1.1.6
-meteor-platform@1.2.2
-minifiers@1.1.5
-minimongo@1.0.8
-mobile-status-bar@1.0.3
-mongo@1.1.0
-observe-sequence@1.0.6
-ordered-dict@1.0.3
-random@1.0.3
-reactive-dict@1.1.0
-reactive-var@1.0.5
-reload@1.1.3
-retry@1.0.3
-routepolicy@1.0.5
-session@1.1.0
-spacebars@1.0.6
-spacebars-compiler@1.0.6
-templating@1.1.1
-tracker@1.0.7
-ui@1.0.6
-underscore@1.0.3
-url@1.0.4
-webapp@1.2.0
-webapp-hashing@1.0.3

tools/tests/apps/build-plugin-throws-error/packages/build-plugin/package.js

@@ -11,6 +11,6 @@ Package.describe({
 });
 
 Package.registerBuildPlugin({
-  name: "build-plugin",
+  name: "build-plugin-itself",
   sources: [ "build-plugin.js" ]
 });

tools/tests/batch-plugins.js

@@ -240,3 +240,21 @@ selftest.define("compiler plugins - inactive source", () => {
 
   run.stop();
 });
+
+// Test error when the registerCompiler callback throws.
+selftest.define("compiler plugins - compiler throws", () => {
+  const s = new Sandbox({ fakeMongo: true });
+
+  s.createApp('myapp', 'compiler-plugin-throws-on-instantiate');
+  s.cd('myapp');
+
+  const run = s.run('add', 'local-plugin');
+  run.matchErr('Errors while adding packages');
+  run.matchErr('While building package local-plugin');
+  // XXX This is wrong! The path on disk is packages/local-plugin/plugin.js, but
+  // at some point we switched to the servePath which is based on the *plugin*'s
+  // "package" name.
+  run.matchErr('packages/compilePrintme/plugin.js:5:1: Error in my ' +
+               'registerCompiler callback!');
+  run.expectExit(1);
+});

tools/tests/source-maps.js

@@ -89,6 +89,9 @@ selftest.define("source maps from a build plugin implementation", ['checkout'],
   s.cd("myapp");
   var run = s.run("run");
   run.waitSecs(10);
-  run.match(/packages\/build-plugin\/build-plugin.js:2:1/);
+  // XXX This is wrong! The path on disk is
+  // packages/build-plugin/build-plugin.js, but at some point we switched to the
+  // servePath which is based on the *plugin*'s "package" name.
+  run.match(/packages\/build-plugin-itself\/build-plugin.js:2:1/);
   run.stop();
 });