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Sometimes, it is beneficial to retrieve information about an object without downloading it entirely. The server-side logic for this functionality was implemented in commit "a2ba162cda (object-info: support for retrieving object info, 2021-04-20)." And the wire format is documented at https://git-scm.com/docs/protocol-v2#_object_info. This commit introduces client functions to interact with the server. Currently, the client supports requesting a list of object IDs with the 'size' feature from a v2 server. If the server does not advertise this feature (i.e., transfer.advertiseobjectinfo is set to false), the client will return an error and exit. Notice that the entire request is written into req_buf before being sent to the remote. This approach follows the pattern used in the `send_fetch_request()` logic within fetch-pack.c. Streaming the request is not addressed in this patch. Helped-by: Jonathan Tan <jonathantanmy@google.com> Helped-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Calvin Wan <calvinwan@google.com> Signed-off-by: Eric Ju <eric.peijian@gmail.com> Signed-off-by: Pablo Sabater <pabloosabaterr@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
23 lines
601 B
C
23 lines
601 B
C
#ifndef FETCH_OBJECT_INFO_H
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#define FETCH_OBJECT_INFO_H
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#include "pkt-line.h"
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#include "protocol.h"
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#include "odb.h"
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struct object_info_args {
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struct string_list *object_info_options;
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const struct string_list *server_options;
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struct oid_array *oids;
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};
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/*
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* Sends git-cat-file object-info command into the request buf and read the
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* results from packets.
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*/
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int fetch_object_info(enum protocol_version version, struct object_info_args *args,
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struct packet_reader *reader, struct object_info *object_info_data,
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int stateless_rpc, int fd_out);
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#endif /* FETCH_OBJECT_INFO_H */
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