cluster/afr : Implementation of command "gluster volume heal vn statistics"

"gluster volume heal volumename statistics" command gives the summary
of the afr crawl done based on the entries present in the xattrop
directory. Whenever afr crawls are attempted, the beginning time of
crawl, end time of crawl, no of files healed, heal-failed count and
number of files in split brain are shown along with the type of the
crawl. If crawl is already in progress then it will give the number
of files healed, heal failed count and number of files in split-brain
from the beginning of the crawl and instead of telling the end time of
the crawl, "CRAWL IN PROGRESS" message will be shown.

Output format:
command: "gluster volume heal volume-name statistics"
Output:
Gathering afr crawl statistics crawl statistics on volume volume-name
has been successful
------------------------------------------------

Crawl statistics for brick no 0
Hostname of brick 192.168.122.248

Starting time of crawl: Wed Jul 10 15:52:38 2013

Ending time of crawl: Wed Jul 10 15:52:38 2013

Type of crawl: INDEX
No. of entries healed: 0
No. of entries in split-brain: 0
No. of heal failed entries: 0

Starting time of crawl: Wed Jul 10 15:52:38 2013

Ending time of crawl: Wed Jul 10 15:52:38 2013

Type of crawl: INDEX
No. of entries healed: 0
No. of entries in split-brain: 0
No. of heal failed entries: 0

------------------------------------------------

Crawl statistics for brick no 1
Hostname of brick 192.168.122.1

Starting time of crawl: Wed Jul 10 15:52:42 2013

Ending time of crawl: Wed Jul 10 15:52:42 2013

Type of crawl: INDEX
No. of entries healed: 0
No. of entries in split-brain: 0
No. of heal failed entries: 0

Starting time of crawl: Wed Jul 10 15:52:42 2013

Ending time of crawl: Wed Jul 10 15:52:42 2013

Type of crawl: INDEX
No. of entries healed: 0
No. of entries in split-brain: 0
No. of heal failed entries: 0

--------------------------------------------------

Change-Id: I10bf9d10b005741db9973fb1352e0dd59ed99aa9
BUG: 949400
Signed-off-by: Venkatesh Somyajulu <vsomyaju@redhat.com>
Reviewed-on: http://review.gluster.org/4790
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

4 files changed, 34 insertions, 10 deletions

diff --git a/libglusterfs/src/circ-buff.c b/libglusterfs/src/circ-buff.c
index a48c9287984..484ce7dc939 100644
--- a/libglusterfs/src/circ-buff.c
+++ b/libglusterfs/src/circ-buff.c
@@ -10,6 +10,17 @@
 
 #include "circ-buff.h"
 
+void
+cb_destroy_data (circular_buffer_t *cb,
+                 void (*destroy_buffer_data) (void *data))
+{
+        if (destroy_buffer_data)
+                destroy_buffer_data (cb->data);
+        GF_FREE (cb->data);
+        return;
+}
+
+
 /* hold lock while calling this function */
 int
 __cb_add_entry_buffer (buffer_t *buffer, void *item)
@@ -29,7 +40,8 @@ __cb_add_entry_buffer (buffer_t *buffer, void *item)
                         if (buffer->cb[buffer->w_index]) {
                                 ptr = buffer->cb[buffer->w_index];
                                 if (ptr->data) {
-                                        GF_FREE (ptr->data);
+                                        cb_destroy_data (ptr,
+                                                   buffer->destroy_buffer_data);
                                         ptr->data = NULL;
                                         GF_FREE (ptr);
                                 }
@@ -131,7 +143,8 @@ cb_buffer_dump (buffer_t *buffer, void *data,
 }
 
 buffer_t *
-cb_buffer_new (size_t buffer_size, gf_boolean_t use_once)
+cb_buffer_new (size_t buffer_size, gf_boolean_t use_once,
+               void (*destroy_buffer_data) (void *data))
 {
         buffer_t    *buffer = NULL;
 
@@ -157,6 +170,7 @@ cb_buffer_new (size_t buffer_size, gf_boolean_t use_once)
         buffer->size_buffer = buffer_size;
         buffer->use_once = use_once;
         buffer->used_len = 0;
+        buffer->destroy_buffer_data = destroy_buffer_data;
         pthread_mutex_init (&buffer->lock, NULL);
 
 out:
@@ -166,12 +180,18 @@ out:
 void
 cb_buffer_destroy (buffer_t *buffer)
 {
-        int i = 0;
-
+        int                     i = 0;
+        circular_buffer_t       *ptr = NULL;
         if (buffer) {
                 if (buffer->cb) {
                         for (i = 0; i < buffer->used_len ; i++) {
-                                GF_FREE (buffer->cb[i]);
+                                ptr = buffer->cb[i];
+                                if (ptr->data) {
+                                        cb_destroy_data (ptr,
+                                                   buffer->destroy_buffer_data);
+                                        ptr->data = NULL;
+                                        GF_FREE (ptr);
+                                }
                         }
                         GF_FREE (buffer->cb);
                 }
diff --git a/libglusterfs/src/circ-buff.h b/libglusterfs/src/circ-buff.h
index 5b5acc387bf..e3459f5e3d0 100644
--- a/libglusterfs/src/circ-buff.h
+++ b/libglusterfs/src/circ-buff.h
@@ -38,7 +38,7 @@ struct _buffer {
         /* indicates the amount of circular buffer used. */
 
         circular_buffer_t **cb;
-
+        void (*destroy_buffer_data) (void *data);
         pthread_mutex_t   lock;
 };
 
@@ -51,7 +51,8 @@ void
 cb_buffer_show (buffer_t *buffer);
 
 buffer_t *
-cb_buffer_new (size_t buffer_size,gf_boolean_t use_buffer_once);
+cb_buffer_new (size_t buffer_size,gf_boolean_t use_buffer_once,
+               void (*destroy_data) (void *data));
 
 void
 cb_buffer_destroy (buffer_t *buffer);
diff --git a/libglusterfs/src/event-history.c b/libglusterfs/src/event-history.c
index fe511caeb1e..82baa521aec 100644
--- a/libglusterfs/src/event-history.c
+++ b/libglusterfs/src/event-history.c
@@ -11,7 +11,8 @@
 #include "event-history.h"
 
 eh_t *
-eh_new (size_t buffer_size, gf_boolean_t use_buffer_once)
+eh_new (size_t buffer_size, gf_boolean_t use_buffer_once,
+        void (*destroy_buffer_data) (void *data))
 {
         eh_t *history = NULL;
         buffer_t *buffer = NULL;
@@ -22,7 +23,8 @@ eh_new (size_t buffer_size, gf_boolean_t use_buffer_once)
                 goto out;
         }
 
-        buffer = cb_buffer_new (buffer_size, use_buffer_once);
+        buffer = cb_buffer_new (buffer_size, use_buffer_once,
+                                destroy_buffer_data);
         if (!buffer) {
                 gf_log ("", GF_LOG_ERROR, "allocating circular buffer failed");
                 GF_FREE (history);
diff --git a/libglusterfs/src/event-history.h b/libglusterfs/src/event-history.h
index b1750bbae96..b64f63b5eb4 100644
--- a/libglusterfs/src/event-history.h
+++ b/libglusterfs/src/event-history.h
@@ -32,7 +32,8 @@ eh_dump (eh_t *event , void *data,
          int (fn) (circular_buffer_t *buffer, void *data));
 
 eh_t *
-eh_new (size_t buffer_size, gf_boolean_t use_buffer_once);
+eh_new (size_t buffer_size, gf_boolean_t use_buffer_once,
+        void (*destroy_data) (void *data));
 
 int
 eh_save_history (eh_t *history, void *string);