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-rw-r--r--xlators/protocol/client/src/saved-frames.c178
1 files changed, 178 insertions, 0 deletions
diff --git a/xlators/protocol/client/src/saved-frames.c b/xlators/protocol/client/src/saved-frames.c
new file mode 100644
index 00000000000..0d1366d8222
--- /dev/null
+++ b/xlators/protocol/client/src/saved-frames.c
@@ -0,0 +1,178 @@
+/*
+ Copyright (c) 2008 Z RESEARCH, Inc. <http://www.zresearch.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+
+#include "saved-frames.h"
+#include "common-utils.h"
+#include "protocol.h"
+#include "xlator.h"
+
+
+
+struct saved_frames *
+saved_frames_new (void)
+{
+ struct saved_frames *saved_frames = NULL;
+
+ saved_frames = CALLOC (sizeof (*saved_frames), 1);
+ if (!saved_frames) {
+ return NULL;
+ }
+
+ INIT_LIST_HEAD (&saved_frames->fops.list);
+ INIT_LIST_HEAD (&saved_frames->mops.list);
+ INIT_LIST_HEAD (&saved_frames->cbks.list);
+
+ return saved_frames;
+}
+
+
+struct saved_frame *
+get_head_frame_for_type (struct saved_frames *frames, int8_t type)
+{
+ struct saved_frame *head_frame = NULL;
+
+ switch (type) {
+ case GF_OP_TYPE_FOP_REQUEST:
+ case GF_OP_TYPE_FOP_REPLY:
+ head_frame = &frames->fops;
+ break;
+ case GF_OP_TYPE_MOP_REQUEST:
+ case GF_OP_TYPE_MOP_REPLY:
+ head_frame = &frames->mops;
+ break;
+ case GF_OP_TYPE_CBK_REQUEST:
+ case GF_OP_TYPE_CBK_REPLY:
+ head_frame = &frames->cbks;
+ break;
+ }
+
+ return head_frame;
+}
+
+
+int
+saved_frames_put (struct saved_frames *frames, call_frame_t *frame,
+ int32_t op, int8_t type, int64_t callid)
+{
+ struct saved_frame *saved_frame = NULL;
+ struct saved_frame *head_frame = NULL;
+
+ head_frame = get_head_frame_for_type (frames, type);
+
+ saved_frame = CALLOC (sizeof (*saved_frame), 1);
+ if (!saved_frame) {
+ return -ENOMEM;
+ }
+
+ INIT_LIST_HEAD (&saved_frame->list);
+ saved_frame->frame = frame;
+ saved_frame->op = op;
+ saved_frame->type = type;
+ saved_frame->callid = callid;
+
+// gettimeofday (&saved_frame->saved_at, NULL);
+
+ list_add (&saved_frame->list, &head_frame->list);
+ frames->count++;
+
+ return 0;
+}
+
+
+call_frame_t *
+saved_frames_get (struct saved_frames *frames, int32_t op,
+ int8_t type, int64_t callid)
+{
+ struct saved_frame *saved_frame = NULL;
+ struct saved_frame *tmp = NULL;
+ struct saved_frame *head_frame = NULL;
+ call_frame_t *frame = NULL;
+
+ head_frame = get_head_frame_for_type (frames, type);
+
+ list_for_each_entry (tmp, &head_frame->list, list) {
+ if (tmp->callid == callid) {
+ list_del_init (&tmp->list);
+ frames->count--;
+ saved_frame = tmp;
+ break;
+ }
+ }
+
+ if (saved_frame)
+ frame = saved_frame->frame;
+
+ FREE (saved_frame);
+
+ return frame;
+}
+
+
+void
+saved_frames_unwind (xlator_t *this, struct saved_frames *saved_frames,
+ struct saved_frame *head,
+ gf_op_t gf_ops[], char *gf_op_list[])
+{
+ struct saved_frame *trav = NULL;
+ struct saved_frame *tmp = NULL;
+
+ gf_hdr_common_t hdr = {0, };
+ call_frame_t *frame = NULL;
+ dict_t *reply = NULL;
+
+ reply = get_new_dict();
+ dict_ref (reply);
+
+ hdr.rsp.op_ret = hton32 (-1);
+ hdr.rsp.op_errno = hton32 (ENOTCONN);
+
+ list_for_each_entry_safe (trav, tmp, &head->list, list) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "forced unwinding frame type(%d) op(%s)",
+ trav->type, gf_op_list[trav->op]);
+
+ hdr.type = hton32 (trav->type);
+ hdr.op = hton32 (trav->op);
+
+ frame = trav->frame;
+ frame->root->rsp_refs = reply;
+
+ saved_frames->count--;
+
+ gf_ops[trav->op] (frame, &hdr, sizeof (hdr), NULL, 0);
+
+ list_del_init (&trav->list);
+ FREE (trav);
+ }
+
+ dict_unref (reply);
+}
+
+
+void
+saved_frames_destroy (xlator_t *this, struct saved_frames *frames,
+ gf_op_t gf_fops[], gf_op_t gf_mops[], gf_op_t gf_cbks[])
+{
+ saved_frames_unwind (this, frames, &frames->fops, gf_fops, gf_fop_list);
+ saved_frames_unwind (this, frames, &frames->mops, gf_mops, gf_mop_list);
+ saved_frames_unwind (this, frames, &frames->cbks, gf_cbks, gf_cbk_list);
+
+ FREE (frames);
+}