From: John Spray <john.spray@inktank.com>
Date: Tue, 25 Mar 2014 13:31:03 +0000 (+0000)
Subject: mds: Add get_metablob to LogEvent
X-Git-Tag: v0.82~48^2~42
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=bf7b84c951edbc2c799f66071ca748905341416f;p=ceph.git

mds: Add get_metablob to LogEvent

Previously the only way to get at the payload
of things like EUpdate and EOpen was to replay() them
(required a full running MDS) or to use downcasting
(yuck).

Signed-off-by: John Spray <john.spray@inktank.com>
---

diff --git a/src/mds/LogEvent.h b/src/mds/LogEvent.h
index 97a4233da6d..1245d256cd1 100644
--- a/src/mds/LogEvent.h
+++ b/src/mds/LogEvent.h
@@ -48,6 +48,7 @@
 
 class MDS;
 class LogSegment;
+class EMetaBlob;
 
 // generic log event
 class LogEvent {
@@ -106,7 +107,11 @@ protected:
    */
   virtual void replay(MDS *m) { assert(0); }
 
-
+  /**
+   * If the subclass embeds a MetaBlob, return it here so that
+   * tools can examine metablobs while traversing lists of LogEvent.
+   */
+  virtual EMetaBlob *get_metablob() {return NULL;}
 };
 
 inline ostream& operator<<(ostream& out, LogEvent& le) {
diff --git a/src/mds/events/EOpen.h b/src/mds/events/EOpen.h
index 1267cf0af72..baf93344a23 100644
--- a/src/mds/events/EOpen.h
+++ b/src/mds/events/EOpen.h
@@ -49,6 +49,7 @@ public:
 
   void update_segment();
   void replay(MDS *mds);
+  EMetaBlob *get_metablob() {return &metablob;}
 };
 
 #endif
diff --git a/src/mds/events/EUpdate.h b/src/mds/events/EUpdate.h
index 645386e2511..d0be0a4f28b 100644
--- a/src/mds/events/EUpdate.h
+++ b/src/mds/events/EUpdate.h
@@ -45,6 +45,7 @@ public:
 
   void update_segment();
   void replay(MDS *mds);
+  EMetaBlob *get_metablob() {return &metablob;}
 };
 
 #endif