Merge branch 'hotfix/v2.1.8'

CHANGELOG

@@ -1,4 +1,10 @@
 
+MiXCR 2.1.8 (22 Dec 2017)
+========================
+
+-- Fixes possible `IOException` during report output on Lustre file system
+
+
 MiXCR 2.1.7 ( 6 Dec 2017)
 ========================
 

pom.xml

@@ -32,7 +32,7 @@
 
     <groupId>com.milaboratory</groupId>
     <artifactId>mixcr</artifactId>
-    <version>2.1.7</version>
+    <version>2.1.8</version>
     <packaging>jar</packaging>
     <name>MiXCR</name>
 

src/main/java/com/milaboratory/mixcr/cli/Util.java

@@ -62,14 +62,22 @@ static void appendAtomically(String fileName, byte[] content) {
 
     static void appendAtomically(File file, byte[] content) {
         try (FileChannel channel = FileChannel.open(file.toPath(), StandardOpenOption.WRITE, StandardOpenOption.CREATE);
-             FileLock lock = channel.lock()) {
+             FileLock lock = lockIfPossible(channel)) {
             channel.position(channel.size());
             channel.write(ByteBuffer.wrap(content));
         } catch (IOException ioe) {
             throw new RuntimeException(ioe);
         }
     }
 
+    static FileLock lockIfPossible(FileChannel channel) {
+        try {
+            return channel.lock();
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
     public static void writeReport(String reportFileName, Report report) {
         ByteArrayOutputStream bos = new ByteArrayOutputStream();
         ReportHelper helper = new ReportHelper(bos, false);