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Whenever a fetch results in a packfile being downloaded, a .keep file is generated, so that the packfile can be preserved (from, say, a running "git repack") until refs are written referring to the contents of the packfile. In a subsequent patch, a successful fetch using protocol v2 may result in more than one .keep file being generated. Therefore, teach fetch_pack() and the transport mechanism to support multiple .keep files. Implementation notes: - builtin/fetch-pack.c normally does not generate .keep files, and thus is unaffected by this or future changes. However, it has an undocumented "--lock-pack" feature, used by remote-curl.c when implementing the "fetch" remote helper command. In keeping with the remote helper protocol, only one "lock" line will ever be written; the rest will result in warnings to stderr. However, in practice, warnings will never be written because the remote-curl.c "fetch" is only used for protocol v0/v1 (which will not generate multiple .keep files). (Protocol v2 uses the "stateless-connect" command, not the "fetch" command.) - connected.c has an optimization in that connectivity checks on a ref need not be done if the target object is in a pack known to be self-contained and connected. If there are multiple packfiles, this optimization can no longer be done. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
#ifndef FETCH_PACK_H
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#define FETCH_PACK_H
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#include "string-list.h"
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#include "run-command.h"
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#include "protocol.h"
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#include "list-objects-filter-options.h"
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struct oid_array;
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struct fetch_pack_args {
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const char *uploadpack;
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int unpacklimit;
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int depth;
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const char *deepen_since;
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const struct string_list *deepen_not;
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struct list_objects_filter_options filter_options;
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const struct string_list *server_options;
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/*
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* If not NULL, during packfile negotiation, fetch-pack will send "have"
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* lines only with these tips and their ancestors.
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*/
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const struct oid_array *negotiation_tips;
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unsigned deepen_relative:1;
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unsigned quiet:1;
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unsigned keep_pack:1;
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unsigned lock_pack:1;
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unsigned use_thin_pack:1;
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unsigned fetch_all:1;
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unsigned stdin_refs:1;
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unsigned diag_url:1;
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unsigned verbose:1;
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unsigned no_progress:1;
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unsigned include_tag:1;
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unsigned stateless_rpc:1;
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unsigned check_self_contained_and_connected:1;
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unsigned self_contained_and_connected:1;
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unsigned cloning:1;
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unsigned update_shallow:1;
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unsigned deepen:1;
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unsigned from_promisor:1;
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/*
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* Attempt to fetch only the wanted objects, and not any objects
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* referred to by them. Due to protocol limitations, extraneous
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* objects may still be included. (When fetching non-blob
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* objects, only blobs are excluded; when fetching a blob, the
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* blob itself will still be sent. The client does not need to
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* know whether a wanted object is a blob or not.)
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*
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* If 1, fetch_pack() will also not modify any object flags.
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* This allows fetch_pack() to safely be called by any function,
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* regardless of which object flags it uses (if any).
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*/
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unsigned no_dependents:1;
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/*
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* Because fetch_pack() overwrites the shallow file upon a
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* successful deepening non-clone fetch, if this struct
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* specifies such a fetch, fetch_pack() needs to perform a
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* connectivity check before deciding if a fetch is successful
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* (and overwriting the shallow file). fetch_pack() sets this
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* field to 1 if such a connectivity check was performed.
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*
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* This is different from check_self_contained_and_connected
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* in that the former allows existing objects in the
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* repository to satisfy connectivity needs, whereas the
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* latter doesn't.
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*/
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unsigned connectivity_checked:1;
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};
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/*
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* sought represents remote references that should be updated from.
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* On return, the names that were found on the remote will have been
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* marked as such.
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*/
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struct ref *fetch_pack(struct fetch_pack_args *args,
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int fd[],
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const struct ref *ref,
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struct ref **sought,
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int nr_sought,
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struct oid_array *shallow,
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struct string_list *pack_lockfiles,
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enum protocol_version version);
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/*
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* Print an appropriate error message for each sought ref that wasn't
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* matched. Return 0 if all sought refs were matched, otherwise 1.
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*/
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int report_unmatched_refs(struct ref **sought, int nr_sought);
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#endif
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