fts-lucene: Delete stale write locks.

diff --git a/src/plugins/fts-lucene/lucene-wrapper.cc b/src/plugins/fts-lucene/lucene-wrapper.cc
index 8a135965f02d05a654f605338e4e91f135ba67b0..dc24c9bcb90442baccb1cc7e1ee868fee5ee8016 100644 (file)
--- a/src/plugins/fts-lucene/lucene-wrapper.cc
+++ b/src/plugins/fts-lucene/lucene-wrapper.cc
@@ -21,6 +21,8 @@ extern "C" {
 /* Lucene's default is 10000. Use it here also.. */
 #define MAX_TERMS_PER_DOCUMENT 10000
 
+#define LUCENE_LOCK_OVERRIDE_SECS 60
+
 using namespace lucene::document;
 using namespace lucene::index;
 using namespace lucene::search;
@@ -227,8 +229,18 @@ int lucene_index_get_doc_count(struct lucene_index *index, uint32_t *count_r)
 
 int lucene_index_build_init(struct lucene_index *index)
 {
+       const char *lock_path;
+       struct stat st;
+
        lucene_index_close(index);
 
+       lock_path = t_strdup_printf("%s/write.lock", index->path);
+       if (stat(lock_path, &st) == 0 &&
+           st.st_mtime < time(NULL) - LUCENE_LOCK_OVERRIDE_SECS) {
+               if (unlink(lock_path) < 0)
+                       i_error("unlink(%s) failed: %m");
+       }
+
        bool exists = IndexReader::indexExists(index->path);
        try {
                index->writer = _CLNEW IndexWriter(index->path,