| #ifndef TRANSPORT_INTERNAL_H |
| #define TRANSPORT_INTERNAL_H |
| |
| struct ref; |
| struct transport; |
| struct strvec; |
| |
| struct transport_vtable { |
| /** |
| * Returns 0 if successful, positive if the option is not |
| * recognized or is inapplicable, and negative if the option |
| * is applicable but the value is invalid. |
| **/ |
| int (*set_option)(struct transport *connection, const char *name, |
| const char *value); |
| /** |
| * Returns a list of the remote side's refs. In order to allow |
| * the transport to try to share connections, for_push is a |
| * hint as to whether the ultimate operation is a push or a fetch. |
| * |
| * If communicating using protocol v2 a list of prefixes can be |
| * provided to be sent to the server to enable it to limit the ref |
| * advertisement. Since ref filtering is done on the server's end, and |
| * only when using protocol v2, this list will be ignored when not |
| * using protocol v2 meaning this function can return refs which don't |
| * match the provided ref_prefixes. |
| * |
| * If the transport is able to determine the remote hash for |
| * the ref without a huge amount of effort, it should store it |
| * in the ref's old_sha1 field; otherwise it should be all 0. |
| **/ |
| struct ref *(*get_refs_list)(struct transport *transport, int for_push, |
| const struct strvec *ref_prefixes); |
| |
| /** |
| * Fetch the objects for the given refs. Note that this gets |
| * an array, and should ignore the list structure. |
| * |
| * If the transport did not get hashes for refs in |
| * get_refs_list(), it should set the old_sha1 fields in the |
| * provided refs now. |
| **/ |
| int (*fetch)(struct transport *transport, int refs_nr, struct ref **refs); |
| |
| /** |
| * Push the objects and refs. Send the necessary objects, and |
| * then, for any refs where peer_ref is set and |
| * peer_ref->new_oid is different from old_oid, tell the |
| * remote side to update each ref in the list from old_oid to |
| * peer_ref->new_oid. |
| * |
| * Where possible, set the status for each ref appropriately. |
| * |
| * The transport must modify new_sha1 in the ref to the new |
| * value if the remote accepted the change. Note that this |
| * could be a different value from peer_ref->new_oid if the |
| * process involved generating new commits. |
| **/ |
| int (*push_refs)(struct transport *transport, struct ref *refs, int flags); |
| int (*connect)(struct transport *connection, const char *name, |
| const char *executable, int fd[2]); |
| |
| /** get_refs_list(), fetch(), and push_refs() can keep |
| * resources (such as a connection) reserved for further |
| * use. disconnect() releases these resources. |
| **/ |
| int (*disconnect)(struct transport *connection); |
| }; |
| |
| #endif |