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authorSoumya Koduri <skoduri@redhat.com>2015-02-15 23:35:56 +0530
committerKaleb KEITHLEY <kkeithle@redhat.com>2015-03-17 05:08:07 -0700
commit2b97b57cd8c71cb07b7002cf3483e9cfc9403c58 (patch)
tree9fc96451b469e213348f3065ca07e7a7c5a96ec0 /libglusterfs/src
parent79009691c01f2b32b523d91a159aadd0e414f31b (diff)
Upcall: New xlator to store various states and send cbk events
Framework on the server-side, to handle certain state of the files accessed and send notifications to the clients connected. A generic and extensible framework, used to maintain states in the glusterfsd process for each of the files accessed (including the clients info doing the fops) and send notifications to the respective glusterfs clients incase of any change in that state. This patch handles "Inode Update/Invalidation" upcall event. Feature page: URL: http://www.gluster.org/community/documentation/index.php/Features/Upcall-infrastructure Below link has a writeup which explains the code changes done - URL: https://soumyakoduri.wordpress.com/2015/02/25/glusterfs-understanding-upcall-infrastructure-and-cache-invalidation-support/ Change-Id: Ie3d724be9a3419fcf18901a753e8ec2df2ac802f BUG: 1200262 Signed-off-by: Soumya Koduri <skoduri@redhat.com> Reviewed-on: http://review.gluster.org/9535 Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
Diffstat (limited to 'libglusterfs/src')
-rw-r--r--libglusterfs/src/defaults.c15
-rw-r--r--libglusterfs/src/glfs-message-id.h4
-rw-r--r--libglusterfs/src/glusterfs.h9
3 files changed, 28 insertions, 0 deletions
diff --git a/libglusterfs/src/defaults.c b/libglusterfs/src/defaults.c
index 599f9477dca..a4f8f924b17 100644
--- a/libglusterfs/src/defaults.c
+++ b/libglusterfs/src/defaults.c
@@ -2287,6 +2287,21 @@ default_notify (xlator_t *this, int32_t event, void *data, ...)
}
}
break;
+ case GF_EVENT_UPCALL:
+ {
+ xlator_list_t *parent = this->parents;
+
+ if (!parent && this->ctx && this->ctx->master)
+ xlator_notify (this->ctx->master, event, data, NULL);
+
+ while (parent) {
+ if (parent->xlator->init_succeeded)
+ xlator_notify (parent->xlator, event,
+ data, NULL);
+ parent = parent->next;
+ }
+ }
+ break;
default:
{
xlator_list_t *parent = this->parents;
diff --git a/libglusterfs/src/glfs-message-id.h b/libglusterfs/src/glfs-message-id.h
index 35abe472aab..c977206c44d 100644
--- a/libglusterfs/src/glfs-message-id.h
+++ b/libglusterfs/src/glfs-message-id.h
@@ -72,6 +72,10 @@
#define GLFS_MSGID_COMP_COMMON_END (GLFS_MSGID_COMP_COMMON +\
GLFS_MSGID_SEGMENT)
+#define GLFS_MSGID_COMP_UPCALL GLFS_MSGID_COMP_COMMON_END
+#define GLFS_MSGID_COMP_UPCALL_END (GLFS_MSGID_COMP_UPCALL +\
+ GLFS_MSGID_SEGMENT)
+
/* --- new segments for messages goes above this line --- */
#endif /* !_GLFS_MESSAGE_ID_H_ */
diff --git a/libglusterfs/src/glusterfs.h b/libglusterfs/src/glusterfs.h
index c482b3d2242..d5a604d0341 100644
--- a/libglusterfs/src/glusterfs.h
+++ b/libglusterfs/src/glusterfs.h
@@ -562,6 +562,7 @@ typedef enum {
GF_EVENT_VOLUME_DEFRAG,
GF_EVENT_PARENT_DOWN,
GF_EVENT_VOLUME_BARRIER_OP,
+ GF_EVENT_UPCALL,
GF_EVENT_MAXVAL,
} glusterfs_event_t;
@@ -574,6 +575,14 @@ struct gf_flock {
gf_lkowner_t l_owner;
};
+struct gf_upcall {
+ char *client_uid;
+ char gfid[16];
+ u_int event_type;
+ u_int flags;
+ u_int expire_time_attr;
+};
+
#define GF_MUST_CHECK __attribute__((warn_unused_result))
/*
* Some macros (e.g. ALLOC_OR_GOTO) set variables in function scope, but the