rgw: start tying metadata objs to version objclass

Signed-off-by: Yehuda Sadeh <yehuda@inktank.com>

6 files changed, 118 insertions, 30 deletions

diff --git a/src/cls/version/cls_version_client.h b/src/cls/version/cls_version_client.h
index b11ea4fd37d..fa2465baff4 100644
--- a/src/cls/version/cls_version_client.h
+++ b/src/cls/version/cls_version_client.h
@@ -16,6 +16,8 @@ void cls_version_inc(librados::ObjectWriteOperation& op);
 /* conditional increase, return -EAGAIN if condition fails */
 void cls_version_inc(librados::ObjectWriteOperation& op, obj_version& ver, VersionCond cond);
 
+int cls_version_read(bufferlist& outbl);
+
 int cls_version_read(librados::IoCtx& io_ctx, string& oid, obj_version *ver);
 
 void cls_version_check(librados::ObjectOperation& op, obj_version& ver, VersionCond cond);
diff --git a/src/rgw/rgw_cache.h b/src/rgw/rgw_cache.h
index 2448c7769ca..e51be9fd5e0 100644
--- a/src/rgw/rgw_cache.h
+++ b/src/rgw/rgw_cache.h
@@ -189,11 +189,11 @@ public:
   int set_attrs(void *ctx, rgw_obj& obj, 
                 map<string, bufferlist>& attrs,
                 map<string, bufferlist>* rmattrs);
-  int put_obj_meta(void *ctx, rgw_obj& obj, uint64_t size, time_t *mtime,
+  int put_obj_meta_impl(void *ctx, rgw_obj& obj, uint64_t size, time_t *mtime,
                    map<std::string, bufferlist>& attrs, RGWObjCategory category, int flags,
                    map<std::string, bufferlist>* rmattrs, const bufferlist *data,
-                   RGWObjManifest *manifest, const string *ptag, list<string> *remove_objs);
-
+                   RGWObjManifest *manifest, const string *ptag, list<string> *remove_objs,
+                   bool modify_version, obj_version *objv);
   int put_obj_data(void *ctx, rgw_obj& obj, const char *data,
               off_t ofs, size_t len, bool exclusive);
 
@@ -349,10 +349,11 @@ int RGWCache<T>::set_attrs(void *ctx, rgw_obj& obj,
 }
 
 template <class T>
-int RGWCache<T>::put_obj_meta(void *ctx, rgw_obj& obj, uint64_t size, time_t *mtime,
+int RGWCache<T>::put_obj_meta_impl(void *ctx, rgw_obj& obj, uint64_t size, time_t *mtime,
                               map<std::string, bufferlist>& attrs, RGWObjCategory category, int flags,
                               map<std::string, bufferlist>* rmattrs, const bufferlist *data,
-                              RGWObjManifest *manifest, const string *ptag, list<string> *remove_objs)
+                              RGWObjManifest *manifest, const string *ptag, list<string> *remove_objs,
+                              bool modify_version, obj_version *objv)
 {
   rgw_bucket bucket;
   string oid;
@@ -369,7 +370,8 @@ int RGWCache<T>::put_obj_meta(void *ctx, rgw_obj& obj, uint64_t size, time_t *mt
       info.flags |= CACHE_FLAG_DATA;
     }
   }
-  int ret = T::put_obj_meta(ctx, obj, size, mtime, attrs, category, flags, rmattrs, data, manifest, ptag, remove_objs);
+  int ret = T::put_obj_meta_impl(ctx, obj, size, mtime, attrs, category, flags, rmattrs, data, manifest, ptag, remove_objs,
+                                 modify_version, objv);
   if (cacheable) {
     string name = normal_name(bucket, oid);
     if (ret >= 0) {
diff --git a/src/rgw/rgw_op.cc b/src/rgw/rgw_op.cc
index 4cda08fd6e0..405fac8738b 100644
--- a/src/rgw/rgw_op.cc
+++ b/src/rgw/rgw_op.cc
@@ -966,8 +966,9 @@ int RGWPutObjProcessor_Plain::handle_data(bufferlist& bl, off_t _ofs, void **pha
 
 int RGWPutObjProcessor_Plain::do_complete(string& etag, map<string, bufferlist>& attrs)
 {
-  int r = store->put_obj_meta(s->obj_ctx, obj, data.length(), NULL, attrs,
-                              RGW_OBJ_CATEGORY_MAIN, PUT_OBJ_CREATE, NULL, &data, NULL, NULL, NULL);
+  int r = store->put_obj_meta(s->obj_ctx, obj, data.length(), attrs,
+                              RGW_OBJ_CATEGORY_MAIN, PUT_OBJ_CREATE,
+                              &data);
   return r;
 }
 
@@ -1175,9 +1176,14 @@ int RGWPutObjProcessor_Atomic::do_complete(string& etag, map<string, bufferlist>
 
   store->set_atomic(s->obj_ctx, head_obj);
 
-  int r = store->put_obj_meta(s->obj_ctx, head_obj, obj_len, NULL, attrs,
-                              RGW_OBJ_CATEGORY_MAIN, PUT_OBJ_CREATE, NULL, &first_chunk, &manifest, NULL, NULL);
+  RGWRados::PutObjMetaExtraParams extra_params;
 
+  extra_params.data = &first_chunk;
+  extra_params.manifest = &manifest;
+
+  int r = store->put_obj_meta(s->obj_ctx, head_obj, obj_len, attrs,
+                              RGW_OBJ_CATEGORY_MAIN, PUT_OBJ_CREATE,
+			      extra_params);
   return r;
 }
 
@@ -1223,7 +1229,7 @@ int RGWPutObjProcessor_Multipart::do_complete(string& etag, map<string, bufferli
 {
   complete_parts();
 
-  int r = store->put_obj_meta(s->obj_ctx, head_obj, s->obj_size, NULL, attrs, RGW_OBJ_CATEGORY_MAIN, 0, NULL, NULL, NULL, NULL, NULL);
+  int r = store->put_obj_meta(s->obj_ctx, head_obj, s->obj_size, attrs, RGW_OBJ_CATEGORY_MAIN, 0);
   if (r < 0)
     return r;
 
@@ -1883,7 +1889,7 @@ void RGWInitMultipart::execute()
 
     obj.init_ns(s->bucket, tmp_obj_name, mp_ns);
     // the meta object will be indexed with 0 size, we c
-    ret = store->put_obj_meta(s->obj_ctx, obj, 0, NULL, attrs, RGW_OBJ_CATEGORY_MULTIMETA, PUT_OBJ_CREATE_EXCL, NULL, NULL, NULL, NULL, NULL);
+    ret = store->put_obj_meta(s->obj_ctx, obj, 0, attrs, RGW_OBJ_CATEGORY_MULTIMETA, PUT_OBJ_CREATE_EXCL);
   } while (ret == -EEXIST);
 }
 
@@ -2067,8 +2073,14 @@ void RGWCompleteMultipart::execute()
 
   store->set_atomic(s->obj_ctx, target_obj);
 
-  ret = store->put_obj_meta(s->obj_ctx, target_obj, ofs, NULL, attrs,
-                            RGW_OBJ_CATEGORY_MAIN, PUT_OBJ_CREATE, NULL, NULL, &manifest, NULL, &remove_objs);
+  RGWRados::PutObjMetaExtraParams extra_params;
+
+  extra_params.manifest = &manifest;
+  extra_params.remove_objs = &remove_objs;
+
+  ret = store->put_obj_meta(s->obj_ctx, target_obj, ofs, attrs,
+                            RGW_OBJ_CATEGORY_MAIN, PUT_OBJ_CREATE,
+			    extra_params);
   if (ret < 0)
     return;
 
diff --git a/src/rgw/rgw_rados.cc b/src/rgw/rgw_rados.cc
index 1860c11af13..e3b6daa6720 100644
--- a/src/rgw/rgw_rados.cc
+++ b/src/rgw/rgw_rados.cc
@@ -15,6 +15,7 @@
 #include "cls/rgw/cls_rgw_types.h"
 #include "cls/rgw/cls_rgw_client.h"
 #include "cls/refcount/cls_refcount_client.h"
+#include "cls/version/cls_version_client.h"
 
 #include "rgw_tools.h"
 
@@ -1384,14 +1385,16 @@ int RGWRados::create_pools(vector<string>& names, vector<int>& retcodes)
  * exclusive: create object exclusively
  * Returns: 0 on success, -ERR# otherwise.
  */
-int RGWRados::put_obj_meta(void *ctx, rgw_obj& obj,  uint64_t size,
+int RGWRados::put_obj_meta_impl(void *ctx, rgw_obj& obj,  uint64_t size,
                   time_t *mtime, map<string, bufferlist>& attrs,
                   RGWObjCategory category, int flags,
                   map<string, bufferlist>* rmattrs,
                   const bufferlist *data,
                   RGWObjManifest *manifest,
 		  const string *ptag,
-                  list<string> *remove_objs)
+                  list<string> *remove_objs,
+                  bool modify_version,
+                  obj_version *objv)
 {
   rgw_bucket bucket;
   std::string oid, key;
@@ -1421,6 +1424,14 @@ int RGWRados::put_obj_meta(void *ctx, rgw_obj& obj,  uint64_t size,
       return r;
   }
 
+  if (modify_version) {
+    if (objv) {
+      cls_version_set(op, *objv);
+    } else {
+      cls_version_inc(op);
+    }
+  }
+
   if (data) {
     /* if we want to overwrite the data, we also want to overwrite the
        xattrs, so just remove the object */
@@ -1678,6 +1689,7 @@ int RGWRados::copy_obj(void *ctx,
   rgw_bucket bucket;
   get_obj_bucket_and_oid_key(first_part->loc, bucket, oid, key);
   librados::IoCtx io_ctx;
+  PutObjMetaExtraParams ep;
 
   ret = open_bucket_ctx(bucket, io_ctx);
   if (ret < 0)
@@ -1727,10 +1739,14 @@ int RGWRados::copy_obj(void *ctx,
     first_part->size = first_chunk.length();
   }
 
-  ret = put_obj_meta(ctx, dest_obj, end + 1, NULL, attrset, category, PUT_OBJ_CREATE, NULL, &first_chunk, pmanifest, &tag, NULL);
+  ep.data = &first_chunk;
+  ep.manifest = pmanifest;
+  ep.ptag = &tag;
+
+  ret = put_obj_meta(ctx, dest_obj, end + 1, attrset, category, PUT_OBJ_CREATE, ep);
 
   if (mtime)
-    obj_stat(ctx, dest_obj, NULL, mtime, NULL, NULL, NULL);
+    obj_stat(ctx, dest_obj, NULL, mtime, NULL, NULL, NULL, NULL);
 
   return 0;
 
@@ -1777,6 +1793,7 @@ int RGWRados::copy_obj_data(void *ctx,
 
   int ret, r;
   off_t ofs = 0;
+  PutObjMetaExtraParams ep;
 
   do {
     bufferlist bl;
@@ -1819,9 +1836,12 @@ int RGWRados::copy_obj_data(void *ctx,
   }
   manifest.obj_size = ofs;
 
-  ret = put_obj_meta(ctx, dest_obj, end + 1, NULL, attrs, category, PUT_OBJ_CREATE, NULL, &first_chunk, &manifest, NULL, NULL);
+  ep.data = &first_chunk;
+  ep.manifest = &manifest;
+
+  ret = put_obj_meta(ctx, dest_obj, end + 1, attrs, category, PUT_OBJ_CREATE, ep);
   if (mtime)
-    obj_stat(ctx, dest_obj, NULL, mtime, NULL, NULL, NULL);
+    obj_stat(ctx, dest_obj, NULL, mtime, NULL, NULL, NULL, NULL);
 
   finish_get_obj(&handle);
 
@@ -2187,7 +2207,14 @@ int RGWRados::get_obj_state(RGWRadosCtx *rctx, rgw_obj& obj, RGWObjState **state
   if (s->has_attrs)
     return 0;
 
-  int r = obj_stat(rctx, obj, &s->size, &s->mtime, &s->epoch, &s->attrset, (s->prefetch_data ? &s->data : NULL));
+  obj_version *objv = NULL;
+
+  if (bucket_is_system(obj.bucket)) {
+//    objv = &s->objv;
+#warning FIXME
+  }
+
+  int r = obj_stat(rctx, obj, &s->size, &s->mtime, &s->epoch, &s->attrset, (s->prefetch_data ? &s->data : NULL), objv);
   if (r == -ENOENT) {
     s->exists = false;
     s->has_attrs = true;
@@ -3495,7 +3522,8 @@ int RGWRados::read(void *ctx, rgw_obj& obj, off_t ofs, size_t size, bufferlist&
   return r;
 }
 
-int RGWRados::obj_stat(void *ctx, rgw_obj& obj, uint64_t *psize, time_t *pmtime, uint64_t *epoch, map<string, bufferlist> *attrs, bufferlist *first_chunk)
+int RGWRados::obj_stat(void *ctx, rgw_obj& obj, uint64_t *psize, time_t *pmtime, uint64_t *epoch, map<string, bufferlist> *attrs, bufferlist *first_chunk,
+                       obj_version *objv)
 {
   rgw_bucket bucket;
   std::string oid, key;
@@ -3512,6 +3540,9 @@ int RGWRados::obj_stat(void *ctx, rgw_obj& obj, uint64_t *psize, time_t *pmtime,
   time_t mtime = 0;
 
   ObjectReadOperation op;
+  if (objv) {
+#warning FIXME
+  }
   op.getxattrs(&attrset, NULL);
   op.stat(&size, &mtime, NULL);
   if (first_chunk) {
diff --git a/src/rgw/rgw_rados.h b/src/rgw/rgw_rados.h
index f87a6eed2ea..d45aaa93b6a 100644
--- a/src/rgw/rgw_rados.h
+++ b/src/rgw/rgw_rados.h
@@ -6,6 +6,7 @@
 #include "common/RefCountedObj.h"
 #include "rgw_common.h"
 #include "cls/rgw/cls_rgw_types.h"
+#include "cls/version/cls_version_types.h"
 #include "rgw_log.h"
 
 class RGWWatcher;
@@ -624,24 +625,63 @@ public:
   virtual int list_placement_set(set<string>& names);
   virtual int create_pools(vector<string>& names, vector<int>& retcodes);
 
+  struct PutObjMetaExtraParams {
+    time_t *mtime;
+    map<std::string, bufferlist>* rmattrs;
+    const bufferlist *data;
+    RGWObjManifest *manifest;
+    const string *ptag;
+    list<string> *remove_objs;
+    bool modify_version;
+    obj_version *objv;
+
+    PutObjMetaExtraParams() : mtime(NULL), rmattrs(NULL),
+                     data(NULL), manifest(NULL), ptag(NULL),
+                     remove_objs(NULL), modify_version(false), objv(NULL) {}
+  };
+
   /** Write/overwrite an object to the bucket storage. */
-  virtual int put_obj_meta(void *ctx, rgw_obj& obj, uint64_t size, time_t *mtime,
+  virtual int put_obj_meta_impl(void *ctx, rgw_obj& obj, uint64_t size, time_t *mtime,
               map<std::string, bufferlist>& attrs, RGWObjCategory category, int flags,
               map<std::string, bufferlist>* rmattrs, const bufferlist *data,
-              RGWObjManifest *manifest, const string *ptag, list<string> *remove_objs);
+              RGWObjManifest *manifest, const string *ptag, list<string> *remove_objs,
+              bool modify_version, obj_version *objv);
+
+  virtual int put_obj_meta(void *ctx, rgw_obj& obj, uint64_t size,
+              map<std::string, bufferlist>& attrs, RGWObjCategory category, int flags,
+              const bufferlist *data = NULL) {
+    return put_obj_meta_impl(ctx, obj, size, NULL, attrs, category, flags,
+                        NULL, data, NULL, NULL, NULL,
+                        false, NULL);
+  }
+
+  virtual int put_obj_meta(void *ctx, rgw_obj& obj, uint64_t size,  map<std::string, bufferlist>& attrs,
+                           RGWObjCategory category, int flags, PutObjMetaExtraParams& params) {
+    return put_obj_meta_impl(ctx, obj, size, params.mtime, attrs, category, flags,
+                        params.rmattrs, params.data, params.manifest, params.ptag, params.remove_objs,
+                        params.modify_version, params.objv);
+  }
+
   virtual int put_obj_data(void *ctx, rgw_obj& obj, const char *data,
               off_t ofs, size_t len, bool exclusive);
   virtual int aio_put_obj_data(void *ctx, rgw_obj& obj, bufferlist& bl,
                                off_t ofs, bool exclusive, void **handle);
   /* note that put_obj doesn't set category on an object, only use it for none user objects */
-  int put_obj(void *ctx, rgw_obj& obj, const char *data, size_t len, bool exclusive,
-              time_t *mtime, map<std::string, bufferlist>& attrs) {
+  int put_system_obj(void *ctx, rgw_obj& obj, const char *data, size_t len, bool exclusive,
+              time_t *mtime, map<std::string, bufferlist>& attrs, obj_version *objv) {
     bufferlist bl;
     bl.append(data, len);
     int flags = PUT_OBJ_CREATE;
     if (exclusive)
       flags |= PUT_OBJ_EXCL;
-    int ret = put_obj_meta(ctx, obj, len, mtime, attrs, RGW_OBJ_CATEGORY_NONE, flags, NULL, &bl, NULL, NULL, NULL);
+
+    PutObjMetaExtraParams ep;
+    ep.mtime = mtime;
+    ep.data = &bl;
+    ep.modify_version = true;
+    ep.objv = objv;
+
+    int ret = put_obj_meta(ctx, obj, len, attrs, RGW_OBJ_CATEGORY_NONE, flags, ep);
     return ret;
   }
   virtual int aio_wait(void *handle);
@@ -811,7 +851,8 @@ public:
   virtual int read(void *ctx, rgw_obj& obj, off_t ofs, size_t size, bufferlist& bl);
 
   virtual int obj_stat(void *ctx, rgw_obj& obj, uint64_t *psize, time_t *pmtime,
-                       uint64_t *epoch, map<string, bufferlist> *attrs, bufferlist *first_chunk);
+                       uint64_t *epoch, map<string, bufferlist> *attrs, bufferlist *first_chunk,
+                       obj_version *objv);
 
   virtual bool supports_omap() { return true; }
   virtual int omap_get_all(rgw_obj& obj, bufferlist& header, std::map<string, bufferlist>& m);
diff --git a/src/rgw/rgw_tools.cc b/src/rgw/rgw_tools.cc
index e83e49a0652..da7413c0848 100644
--- a/src/rgw/rgw_tools.cc
+++ b/src/rgw/rgw_tools.cc
@@ -22,12 +22,12 @@ int rgw_put_system_obj(RGWRados *rgwstore, rgw_bucket& bucket, string& oid, cons
 
   rgw_obj obj(bucket, oid);
 
-  int ret = rgwstore->put_obj(NULL, obj, data, size, exclusive, NULL, *pattrs);
+  int ret = rgwstore->put_system_obj(NULL, obj, data, size, exclusive, NULL, *pattrs, NULL);
 
   if (ret == -ENOENT) {
     ret = rgwstore->create_pool(bucket);
     if (ret >= 0)
-      ret = rgwstore->put_obj(NULL, obj, data, size, exclusive, NULL, *pattrs);
+      ret = rgwstore->put_system_obj(NULL, obj, data, size, exclusive, NULL, *pattrs, NULL);
   }
 
   return ret;