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-rw-r--r--xlators/features/changelog/src/changelog-encoders.c156
1 files changed, 156 insertions, 0 deletions
diff --git a/xlators/features/changelog/src/changelog-encoders.c b/xlators/features/changelog/src/changelog-encoders.c
new file mode 100644
index 000000000..c71ea9270
--- /dev/null
+++ b/xlators/features/changelog/src/changelog-encoders.c
@@ -0,0 +1,156 @@
+/*
+ Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "changelog-encoders.h"
+
+size_t
+entry_fn (void *data, char *buffer, gf_boolean_t encode)
+{
+ char *tmpbuf = NULL;
+ size_t bufsz = 0;
+ struct changelog_entry_fields *ce = NULL;
+
+ ce = (struct changelog_entry_fields *) data;
+
+ if (encode) {
+ tmpbuf = uuid_utoa (ce->cef_uuid);
+ CHANGELOG_FILL_BUFFER (buffer, bufsz, tmpbuf, strlen (tmpbuf));
+ } else {
+ CHANGELOG_FILL_BUFFER (buffer, bufsz,
+ ce->cef_uuid, sizeof (uuid_t));
+ }
+
+ CHANGELOG_FILL_BUFFER (buffer, bufsz, "/", 1);
+ CHANGELOG_FILL_BUFFER (buffer, bufsz,
+ ce->cef_bname, strlen (ce->cef_bname));
+ return bufsz;
+}
+
+size_t
+fop_fn (void *data, char *buffer, gf_boolean_t encode)
+{
+ char buf[10] = {0,};
+ size_t bufsz = 0;
+ glusterfs_fop_t fop = 0;
+
+ fop = *(glusterfs_fop_t *) data;
+
+ if (encode) {
+ (void) snprintf (buf, sizeof (buf), "%d", fop);
+ CHANGELOG_FILL_BUFFER (buffer, bufsz, buf, strlen (buf));
+ } else
+ CHANGELOG_FILL_BUFFER (buffer, bufsz, &fop, sizeof (fop));
+
+ return bufsz;
+}
+
+void
+entry_free_fn (void *data)
+{
+ changelog_opt_t *co = data;
+
+ if (!co)
+ return;
+
+ GF_FREE (co->co_entry.cef_bname);
+}
+
+/**
+ * try to write all data in one shot
+ */
+
+static inline void
+changelog_encode_write_xtra (changelog_log_data_t *cld,
+ char *buffer, size_t *off, gf_boolean_t encode)
+{
+ int i = 0;
+ size_t offset = 0;
+ void *data = NULL;
+ changelog_opt_t *co = NULL;
+
+ offset = *off;
+
+ co = (changelog_opt_t *) cld->cld_ptr;
+
+ for (; i < cld->cld_xtra_records; i++, co++) {
+ CHANGELOG_FILL_BUFFER (buffer, offset, "\0", 1);
+
+ switch (co->co_type) {
+ case CHANGELOG_OPT_REC_FOP:
+ data = &co->co_fop;
+ break;
+ case CHANGELOG_OPT_REC_ENTRY:
+ data = &co->co_entry;
+ break;
+ }
+
+ if (co->co_convert)
+ offset += co->co_convert (data,
+ buffer + offset, encode);
+ else /* no coversion: write it out as it is */
+ CHANGELOG_FILL_BUFFER (buffer, offset,
+ data, co->co_len);
+ }
+
+ *off = offset;
+}
+
+int
+changelog_encode_ascii (xlator_t *this, changelog_log_data_t *cld)
+{
+ size_t off = 0;
+ size_t gfid_len = 0;
+ char *gfid_str = NULL;
+ char *buffer = NULL;
+ changelog_priv_t *priv = NULL;
+
+ priv = this->private;
+
+ gfid_str = uuid_utoa (cld->cld_gfid);
+ gfid_len = strlen (gfid_str);
+
+ /* extra bytes for decorations */
+ buffer = alloca (gfid_len + cld->cld_ptr_len + 10);
+ CHANGELOG_STORE_ASCII (priv, buffer,
+ off, gfid_str, gfid_len, cld);
+
+ if (cld->cld_xtra_records)
+ changelog_encode_write_xtra (cld, buffer, &off, _gf_true);
+
+ CHANGELOG_FILL_BUFFER (buffer, off, "\0", 1);
+
+ return changelog_write_change (priv, buffer, off);
+}
+
+int
+changelog_encode_binary (xlator_t *this, changelog_log_data_t *cld)
+{
+ size_t off = 0;
+ char *buffer = NULL;
+ changelog_priv_t *priv = NULL;
+
+ priv = this->private;
+
+ /* extra bytes for decorations */
+ buffer = alloca (sizeof (uuid_t) + cld->cld_ptr_len + 10);
+ CHANGELOG_STORE_BINARY (priv, buffer, off, cld->cld_gfid, cld);
+
+ if (cld->cld_xtra_records)
+ changelog_encode_write_xtra (cld, buffer, &off, _gf_false);
+
+ CHANGELOG_FILL_BUFFER (buffer, off, "\0", 1);
+
+ return changelog_write_change (priv, buffer, off);
+}