add hello world lustre plugin

Author: bertschinger

contrib/lustre_plugin.c

@@ -0,0 +1,9 @@
+#include <stdio.h>
+
+void process_dir(char *path) {
+    printf("Hello from lustre dir plugin: %s\n", path);
+}
+
+void process_file(char *path) {
+    printf("Hello from lustre file plugin: %s\n", path);
+}

src/gufi_dir2index.c

@@ -143,6 +143,10 @@ static int process_nondir(struct work *entry, struct entry_data *ed, void *args)
         }
     }
 
+    if (in->plugin_ops.process_file) {
+        in->plugin_ops.process_file(entry->name);
+    }
+
     if (in->process_xattrs) {
         insertdbgo_xattrs(in, &nda->ed.statuso, entry, ed,
                           &nda->xattr_db_list, nda->temp_xattr,
@@ -271,6 +275,10 @@ static int processdir(QPTPool_t *ctx, const size_t id, void *data, void *args) {
         startdb(nda.db);
     }
 
+    if (pa->in.plugin_ops.process_dir) {
+        pa->in.plugin_ops.process_dir(nda.work->name);
+    }
+
     struct descend_counters ctrs;
     descend(ctx, id, pa, nda.in, nda.work, nda.ed.statuso.st_ino, dir, 0,
             processdir, process_nondir, &nda,