Enum git_repository::remote::fetch::Source
source · Available on crate features
blocking-network-client or async-network-client only.Expand description
Either an object id that the remote has or the matched remote ref itself.
Variants§
ObjectId(ObjectId)
An object id, as the matched ref-spec was an object id itself.
Ref(Ref)
The remote reference that matched the ref-specs name.
Implementations§
source§impl Source
impl Source
sourcepub fn as_id(&self) -> Option<&oid>
pub fn as_id(&self) -> Option<&oid>
Return either the direct object id we refer to or the direct target that a reference refers to.
The latter may be a direct or a symbolic reference, and we degenerate this to the peeled object id.
If unborn, None is returned.
Examples found in repository?
src/remote/connection/fetch/negotiate.rs (line 52)
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pub(crate) fn one_round(
algo: Algorithm,
round: usize,
repo: &crate::Repository,
ref_map: &crate::remote::fetch::RefMap,
fetch_tags: crate::remote::fetch::Tags,
arguments: &mut git_protocol::fetch::Arguments,
_previous_response: Option<&git_protocol::fetch::Response>,
) -> Result<bool, Error> {
let tag_refspec_to_ignore = fetch_tags
.to_refspec()
.filter(|_| matches!(fetch_tags, crate::remote::fetch::Tags::Included));
match algo {
Algorithm::Naive => {
assert_eq!(round, 1, "Naive always finishes after the first round, and claims.");
let mut has_missing_tracking_branch = false;
for mapping in &ref_map.mappings {
if tag_refspec_to_ignore.map_or(false, |tag_spec| {
mapping
.spec_index
.implicit_index()
.and_then(|idx| ref_map.extra_refspecs.get(idx))
.map_or(false, |spec| spec.to_ref() == tag_spec)
}) {
continue;
}
let have_id = mapping.local.as_ref().and_then(|name| {
repo.find_reference(name)
.ok()
.and_then(|r| r.target().try_id().map(ToOwned::to_owned))
});
match have_id {
Some(have_id) => {
if let Some(want_id) = mapping.remote.as_id() {
if want_id != have_id {
arguments.want(want_id);
arguments.have(have_id);
}
}
}
None => {
if let Some(want_id) = mapping.remote.as_id() {
arguments.want(want_id);
has_missing_tracking_branch = true;
}
}
}
}
if has_missing_tracking_branch {
if let Ok(Some(r)) = repo.head_ref() {
if let Some(id) = r.target().try_id() {
arguments.have(id);
}
}
}
Ok(true)
}
}
}More examples
src/remote/connection/fetch/update_refs/mod.rs (line 77)
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pub(crate) fn update(
repo: &Repository,
message: RefLogMessage,
mappings: &[fetch::Mapping],
refspecs: &[git_refspec::RefSpec],
extra_refspecs: &[git_refspec::RefSpec],
fetch_tags: fetch::Tags,
dry_run: fetch::DryRun,
write_packed_refs: fetch::WritePackedRefs,
) -> Result<update::Outcome, update::Error> {
let mut edits = Vec::new();
let mut updates = Vec::new();
let implicit_tag_refspec = fetch_tags
.to_refspec()
.filter(|_| matches!(fetch_tags, crate::remote::fetch::Tags::Included));
for (remote, local, spec, is_implicit_tag) in mappings.iter().filter_map(
|fetch::Mapping {
remote,
local,
spec_index,
}| {
spec_index.get(refspecs, extra_refspecs).map(|spec| {
(
remote,
local,
spec,
implicit_tag_refspec.map_or(false, |tag_spec| spec.to_ref() == tag_spec),
)
})
},
) {
let remote_id = match remote.as_id() {
Some(id) => id,
None => continue,
};
if dry_run == fetch::DryRun::No && !repo.objects.contains(remote_id) {
let update = if is_implicit_tag {
update::Mode::ImplicitTagNotSentByRemote.into()
} else {
update::Mode::RejectedSourceObjectNotFound { id: remote_id.into() }.into()
};
updates.push(update);
continue;
}
let checked_out_branches = worktree_branches(repo)?;
let (mode, edit_index) = match local {
Some(name) => {
let (mode, reflog_message, name, previous_value) = match repo.try_find_reference(name)? {
Some(existing) => {
if let Some(wt_dir) = checked_out_branches.get(existing.name()) {
let mode = update::Mode::RejectedCurrentlyCheckedOut {
worktree_dir: wt_dir.to_owned(),
};
updates.push(mode.into());
continue;
}
match existing.target() {
TargetRef::Symbolic(_) => {
updates.push(update::Mode::RejectedSymbolic.into());
continue;
}
TargetRef::Peeled(local_id) => {
let previous_value =
PreviousValue::MustExistAndMatch(Target::Peeled(local_id.to_owned()));
let (mode, reflog_message) = if local_id == remote_id {
(update::Mode::NoChangeNeeded, "no update will be performed")
} else if let Some(git_ref::Category::Tag) = existing.name().category() {
if spec.allow_non_fast_forward() {
(update::Mode::Forced, "updating tag")
} else {
updates.push(update::Mode::RejectedTagUpdate.into());
continue;
}
} else {
let mut force = spec.allow_non_fast_forward();
let is_fast_forward = match dry_run {
fetch::DryRun::No => {
let ancestors = repo
.find_object(local_id)?
.try_into_commit()
.map_err(|_| ())
.and_then(|c| {
c.committer().map(|a| a.time.seconds_since_unix_epoch).map_err(|_| ())
}).and_then(|local_commit_time|
remote_id
.to_owned()
.ancestors(|id, buf| repo.objects.find_commit_iter(id, buf))
.sorting(
git_traverse::commit::Sorting::ByCommitTimeNewestFirstCutoffOlderThan {
time_in_seconds_since_epoch: local_commit_time
},
)
.map_err(|_| ())
);
match ancestors {
Ok(mut ancestors) => {
ancestors.any(|cid| cid.map_or(false, |cid| cid == local_id))
}
Err(_) => {
force = true;
false
}
}
}
fetch::DryRun::Yes => true,
};
if is_fast_forward {
(
update::Mode::FastForward,
matches!(dry_run, fetch::DryRun::Yes)
.then(|| "fast-forward (guessed in dry-run)")
.unwrap_or("fast-forward"),
)
} else if force {
(update::Mode::Forced, "forced-update")
} else {
updates.push(update::Mode::RejectedNonFastForward.into());
continue;
}
};
(mode, reflog_message, existing.name().to_owned(), previous_value)
}
}
}
None => {
let name: git_ref::FullName = name.try_into()?;
let reflog_msg = match name.category() {
Some(git_ref::Category::Tag) => "storing tag",
Some(git_ref::Category::LocalBranch) => "storing head",
_ => "storing ref",
};
(
update::Mode::New,
reflog_msg,
name,
PreviousValue::ExistingMustMatch(Target::Peeled(remote_id.to_owned())),
)
}
};
let edit = RefEdit {
change: Change::Update {
log: LogChange {
mode: RefLog::AndReference,
force_create_reflog: false,
message: message.compose(reflog_message),
},
expected: previous_value,
new: if let Source::Ref(git_protocol::handshake::Ref::Symbolic { target, .. }) = &remote {
match mappings.iter().find_map(|m| {
m.remote.as_name().and_then(|name| {
(name == target)
.then(|| m.local.as_ref().and_then(|local| local.try_into().ok()))
.flatten()
})
}) {
Some(local_branch) => {
// This is always safe because…
// - the reference may exist already
// - if it doesn't exist it will be created - we are here because it's in the list of mappings after all
// - if it exists and is updated, and the update is rejected due to non-fastforward for instance, the
// target reference still exists and we can point to it.
Target::Symbolic(local_branch)
}
None => Target::Peeled(remote_id.into()),
}
} else {
Target::Peeled(remote_id.into())
},
},
name,
deref: false,
};
let edit_index = edits.len();
edits.push(edit);
(mode, Some(edit_index))
}
None => (update::Mode::NoChangeNeeded, None),
};
updates.push(Update { mode, edit_index })
}
let edits = match dry_run {
fetch::DryRun::No => {
let (file_lock_fail, packed_refs_lock_fail) = repo
.config
.lock_timeout()
.map_err(crate::reference::edit::Error::from)?;
repo.refs
.transaction()
.packed_refs(
match write_packed_refs {
fetch::WritePackedRefs::Only => {
git_ref::file::transaction::PackedRefs::DeletionsAndNonSymbolicUpdatesRemoveLooseSourceReference(Box::new(|oid, buf| {
repo.objects
.try_find(oid, buf)
.map(|obj| obj.map(|obj| obj.kind))
.map_err(|err| Box::new(err) as Box<dyn std::error::Error + Send + Sync + 'static>)
}))},
fetch::WritePackedRefs::Never => git_ref::file::transaction::PackedRefs::DeletionsOnly
}
)
.prepare(edits, file_lock_fail, packed_refs_lock_fail)
.map_err(crate::reference::edit::Error::from)?
.commit(repo.committer_or_default())
.map_err(crate::reference::edit::Error::from)?
}
fetch::DryRun::Yes => edits,
};
Ok(update::Outcome { edits, updates })
}sourcepub fn as_name(&self) -> Option<&BStr>
pub fn as_name(&self) -> Option<&BStr>
Return ourselves as the full name of the reference we represent, or None if this source isn’t a reference but an object.
Examples found in repository?
src/remote/connection/fetch/update_refs/mod.rs (line 195)
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pub(crate) fn update(
repo: &Repository,
message: RefLogMessage,
mappings: &[fetch::Mapping],
refspecs: &[git_refspec::RefSpec],
extra_refspecs: &[git_refspec::RefSpec],
fetch_tags: fetch::Tags,
dry_run: fetch::DryRun,
write_packed_refs: fetch::WritePackedRefs,
) -> Result<update::Outcome, update::Error> {
let mut edits = Vec::new();
let mut updates = Vec::new();
let implicit_tag_refspec = fetch_tags
.to_refspec()
.filter(|_| matches!(fetch_tags, crate::remote::fetch::Tags::Included));
for (remote, local, spec, is_implicit_tag) in mappings.iter().filter_map(
|fetch::Mapping {
remote,
local,
spec_index,
}| {
spec_index.get(refspecs, extra_refspecs).map(|spec| {
(
remote,
local,
spec,
implicit_tag_refspec.map_or(false, |tag_spec| spec.to_ref() == tag_spec),
)
})
},
) {
let remote_id = match remote.as_id() {
Some(id) => id,
None => continue,
};
if dry_run == fetch::DryRun::No && !repo.objects.contains(remote_id) {
let update = if is_implicit_tag {
update::Mode::ImplicitTagNotSentByRemote.into()
} else {
update::Mode::RejectedSourceObjectNotFound { id: remote_id.into() }.into()
};
updates.push(update);
continue;
}
let checked_out_branches = worktree_branches(repo)?;
let (mode, edit_index) = match local {
Some(name) => {
let (mode, reflog_message, name, previous_value) = match repo.try_find_reference(name)? {
Some(existing) => {
if let Some(wt_dir) = checked_out_branches.get(existing.name()) {
let mode = update::Mode::RejectedCurrentlyCheckedOut {
worktree_dir: wt_dir.to_owned(),
};
updates.push(mode.into());
continue;
}
match existing.target() {
TargetRef::Symbolic(_) => {
updates.push(update::Mode::RejectedSymbolic.into());
continue;
}
TargetRef::Peeled(local_id) => {
let previous_value =
PreviousValue::MustExistAndMatch(Target::Peeled(local_id.to_owned()));
let (mode, reflog_message) = if local_id == remote_id {
(update::Mode::NoChangeNeeded, "no update will be performed")
} else if let Some(git_ref::Category::Tag) = existing.name().category() {
if spec.allow_non_fast_forward() {
(update::Mode::Forced, "updating tag")
} else {
updates.push(update::Mode::RejectedTagUpdate.into());
continue;
}
} else {
let mut force = spec.allow_non_fast_forward();
let is_fast_forward = match dry_run {
fetch::DryRun::No => {
let ancestors = repo
.find_object(local_id)?
.try_into_commit()
.map_err(|_| ())
.and_then(|c| {
c.committer().map(|a| a.time.seconds_since_unix_epoch).map_err(|_| ())
}).and_then(|local_commit_time|
remote_id
.to_owned()
.ancestors(|id, buf| repo.objects.find_commit_iter(id, buf))
.sorting(
git_traverse::commit::Sorting::ByCommitTimeNewestFirstCutoffOlderThan {
time_in_seconds_since_epoch: local_commit_time
},
)
.map_err(|_| ())
);
match ancestors {
Ok(mut ancestors) => {
ancestors.any(|cid| cid.map_or(false, |cid| cid == local_id))
}
Err(_) => {
force = true;
false
}
}
}
fetch::DryRun::Yes => true,
};
if is_fast_forward {
(
update::Mode::FastForward,
matches!(dry_run, fetch::DryRun::Yes)
.then(|| "fast-forward (guessed in dry-run)")
.unwrap_or("fast-forward"),
)
} else if force {
(update::Mode::Forced, "forced-update")
} else {
updates.push(update::Mode::RejectedNonFastForward.into());
continue;
}
};
(mode, reflog_message, existing.name().to_owned(), previous_value)
}
}
}
None => {
let name: git_ref::FullName = name.try_into()?;
let reflog_msg = match name.category() {
Some(git_ref::Category::Tag) => "storing tag",
Some(git_ref::Category::LocalBranch) => "storing head",
_ => "storing ref",
};
(
update::Mode::New,
reflog_msg,
name,
PreviousValue::ExistingMustMatch(Target::Peeled(remote_id.to_owned())),
)
}
};
let edit = RefEdit {
change: Change::Update {
log: LogChange {
mode: RefLog::AndReference,
force_create_reflog: false,
message: message.compose(reflog_message),
},
expected: previous_value,
new: if let Source::Ref(git_protocol::handshake::Ref::Symbolic { target, .. }) = &remote {
match mappings.iter().find_map(|m| {
m.remote.as_name().and_then(|name| {
(name == target)
.then(|| m.local.as_ref().and_then(|local| local.try_into().ok()))
.flatten()
})
}) {
Some(local_branch) => {
// This is always safe because…
// - the reference may exist already
// - if it doesn't exist it will be created - we are here because it's in the list of mappings after all
// - if it exists and is updated, and the update is rejected due to non-fastforward for instance, the
// target reference still exists and we can point to it.
Target::Symbolic(local_branch)
}
None => Target::Peeled(remote_id.into()),
}
} else {
Target::Peeled(remote_id.into())
},
},
name,
deref: false,
};
let edit_index = edits.len();
edits.push(edit);
(mode, Some(edit_index))
}
None => (update::Mode::NoChangeNeeded, None),
};
updates.push(Update { mode, edit_index })
}
let edits = match dry_run {
fetch::DryRun::No => {
let (file_lock_fail, packed_refs_lock_fail) = repo
.config
.lock_timeout()
.map_err(crate::reference::edit::Error::from)?;
repo.refs
.transaction()
.packed_refs(
match write_packed_refs {
fetch::WritePackedRefs::Only => {
git_ref::file::transaction::PackedRefs::DeletionsAndNonSymbolicUpdatesRemoveLooseSourceReference(Box::new(|oid, buf| {
repo.objects
.try_find(oid, buf)
.map(|obj| obj.map(|obj| obj.kind))
.map_err(|err| Box::new(err) as Box<dyn std::error::Error + Send + Sync + 'static>)
}))},
fetch::WritePackedRefs::Never => git_ref::file::transaction::PackedRefs::DeletionsOnly
}
)
.prepare(edits, file_lock_fail, packed_refs_lock_fail)
.map_err(crate::reference::edit::Error::from)?
.commit(repo.committer_or_default())
.map_err(crate::reference::edit::Error::from)?
}
fetch::DryRun::Yes => edits,
};
Ok(update::Outcome { edits, updates })
}