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Initial work on cloud log-structured storage.
[bluesky.git]
/
bluesky
/
bluesky.h
diff --git
a/bluesky/bluesky.h
b/bluesky/bluesky.h
index
29d9a62
..
9543d9c
100644
(file)
--- a/
bluesky/bluesky.h
+++ b/
bluesky/bluesky.h
@@
-93,6
+93,9
@@
BlueSkyRCStr *bluesky_crypt_decrypt(BlueSkyRCStr *in, const uint8_t *key);
struct _BlueSkyStore;
typedef struct _BlueSkyStore BlueSkyStore;
struct _BlueSkyStore;
typedef struct _BlueSkyStore BlueSkyStore;
+struct _BlueSkyLog;
+typedef struct _BlueSkyLog BlueSkyLog;
+
void bluesky_store_init();
BlueSkyStore *bluesky_store_new(const gchar *type);
void bluesky_store_free(BlueSkyStore *store);
void bluesky_store_init();
BlueSkyStore *bluesky_store_new(const gchar *type);
void bluesky_store_free(BlueSkyStore *store);
@@
-126,6
+129,7
@@
typedef struct {
uint64_t next_inum; /* Next available inode for allocation */
BlueSkyStore *store;
uint64_t next_inum; /* Next available inode for allocation */
BlueSkyStore *store;
+ BlueSkyLog *log;
/* Accounting for memory used for caches. Space is measured in blocks, not
* bytes. We track both total data in the caches and dirty data (total
/* Accounting for memory used for caches. Space is measured in blocks, not
* bytes. We track both total data in the caches and dirty data (total
@@
-142,6
+146,10
@@
typedef struct {
/* Mutex for the flush daemon, to prevent concurrent execution. */
GMutex *flushd_lock;
/* Mutex for the flush daemon, to prevent concurrent execution. */
GMutex *flushd_lock;
+
+ /* Mapping of object identifiers (blocks, inodes) to physical location (in
+ * the local cache or in the logs in the cloud). */
+ GHashTable *locations;
} BlueSkyFS;
/* Inode number of the root directory. */
} BlueSkyFS;
/* Inode number of the root directory. */
@@
-191,8
+199,9
@@
typedef struct {
/* change_count is increased with every operation which modifies the inode,
* and can be used to determine if cached data is still valid.
* change_commit is the value of change_count when the inode was last
/* change_count is increased with every operation which modifies the inode,
* and can be used to determine if cached data is still valid.
* change_commit is the value of change_count when the inode was last
- * committed to stable storage. */
- uint64_t change_count, change_commit;
+ * committed to stable storage (the log).
+ * change_cloud tracks which version was last commited to cloud storage. */
+ uint64_t change_count, change_commit, change_cloud;
/* Timestamp for controlling when modified data is flushed to stable
* storage. When an inode is first modified from a clean state, this is
/* Timestamp for controlling when modified data is flushed to stable
* storage. When an inode is first modified from a clean state, this is