// Copyright 2022 The Jujutsu Authors//// Licensed under the Apache License, Version 2.0 (the "License");// you may not use this file except in compliance with the License.// You may obtain a copy of the License at//// https://www.apache.org/licenses/LICENSE-2.0//// Unless required by applicable law or agreed to in writing, software// distributed under the License is distributed on an "AS IS" BASIS,// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.// See the License for the specific language governing permissions and// limitations under the License. use std::path::Path;use std::pin::Pin;use std::time::SystemTime; use async_trait::async_trait;use futures::AsyncRead;use futures::stream::BoxStream;use jj_cli::cli_util::CliRunner;use jj_cli::cli_util::CommandHelper;use jj_cli::command_error::CommandError;use jj_cli::ui::Ui;use jj_lib::backend::Backend;use jj_lib::backend::BackendInitError;use jj_lib::backend::BackendLoadError;use jj_lib::backend::BackendResult;use jj_lib::backend::ChangeId;use jj_lib::backend::Commit;use jj_lib::backend::CommitId;use jj_lib::backend::CopyHistory;use jj_lib::backend::CopyId;use jj_lib::backend::CopyRecord;use jj_lib::backend::FileId;use jj_lib::backend::RelatedCopy;use jj_lib::backend::SigningFn;use jj_lib::backend::SymlinkId;use jj_lib::backend::Tree;use jj_lib::backend::TreeId;use jj_lib::git_backend::GitBackend;use jj_lib::index::Index;use jj_lib::repo::StoreFactories;use jj_lib::repo_path::RepoPath;use jj_lib::repo_path::RepoPathBuf;use jj_lib::settings::UserSettings;use jj_lib::signing::Signer;use jj_lib::workspace::Workspace;use jj_lib::workspace::WorkspaceInitError; #[derive(clap::Parser, Clone, Debug)]enum CustomCommand { /// Initialize a workspace using the Jit backend InitJit,} fn create_store_factories() -> StoreFactories { let mut store_factories = StoreFactories::empty(); // Register the backend so it can be loaded when the repo is loaded. The name // must match `Backend::name()`. store_factories.add_backend( "jit", Box::new(|settings, store_path| Ok(Box::new(JitBackend::load(settings, store_path)?))), ); store_factories} async fn run_custom_command( ui: &mut Ui, command_helper: &CommandHelper, command: CustomCommand,) -> Result<(), CommandError> { match command { CustomCommand::InitJit => { let wc_path = command_helper.cwd(); let settings = command_helper.settings_for_new_workspace(ui, wc_path)?.0; // Initialize a workspace with the custom backend Workspace::init_with_backend( &settings, wc_path, &|settings, store_path| Ok(Box::new(JitBackend::init(settings, store_path)?)), Signer::from_settings(&settings).map_err(WorkspaceInitError::SignInit)?, ) .await?; Ok(()) } }} fn main() -> std::process::ExitCode { CliRunner::init() .add_store_factories(create_store_factories()) .add_subcommand(run_custom_command) .run() .into()} /// A commit backend that's extremely similar to the Git backend#[derive(Debug)]struct JitBackend { inner: GitBackend,} impl JitBackend { fn init(settings: &UserSettings, store_path: &Path) -> Result<Self, BackendInitError> { let inner = GitBackend::init_internal(settings, store_path, gix::hash::Kind::default())?; Ok(Self { inner }) } fn load(settings: &UserSettings, store_path: &Path) -> Result<Self, BackendLoadError> { let inner = GitBackend::load(settings, store_path)?; Ok(Self { inner }) }} #[async_trait]impl Backend for JitBackend { fn name(&self) -> &'static str { "jit" } fn commit_id_length(&self) -> usize { self.inner.commit_id_length() } fn change_id_length(&self) -> usize { self.inner.change_id_length() } fn root_commit_id(&self) -> &CommitId { self.inner.root_commit_id() } fn root_change_id(&self) -> &ChangeId { self.inner.root_change_id() } fn empty_tree_id(&self) -> &TreeId { self.inner.empty_tree_id() } fn concurrency(&self) -> usize { 1 } async fn read_file( &self, path: &RepoPath, id: &FileId, ) -> BackendResult<Pin<Box<dyn AsyncRead + Send>>> { self.inner.read_file(path, id).await } async fn write_file( &self, path: &RepoPath, contents: &mut (dyn AsyncRead + Send + Unpin), ) -> BackendResult<FileId> { self.inner.write_file(path, contents).await } async fn read_symlink(&self, path: &RepoPath, id: &SymlinkId) -> BackendResult<String> { self.inner.read_symlink(path, id).await } async fn write_symlink(&self, path: &RepoPath, target: &str) -> BackendResult<SymlinkId> { self.inner.write_symlink(path, target).await } async fn read_copy(&self, id: &CopyId) -> BackendResult<CopyHistory> { self.inner.read_copy(id).await } async fn write_copy(&self, contents: &CopyHistory) -> BackendResult<CopyId> { self.inner.write_copy(contents).await } async fn get_related_copies(&self, copy_id: &CopyId) -> BackendResult<Vec<RelatedCopy>> { self.inner.get_related_copies(copy_id).await } async fn read_tree(&self, path: &RepoPath, id: &TreeId) -> BackendResult<Tree> { self.inner.read_tree(path, id).await } async fn write_tree(&self, path: &RepoPath, contents: &Tree) -> BackendResult<TreeId> { self.inner.write_tree(path, contents).await } async fn read_commit(&self, id: &CommitId) -> BackendResult<Commit> { self.inner.read_commit(id).await } async fn write_commit( &self, contents: Commit, sign_with: Option<&mut SigningFn>, ) -> BackendResult<(CommitId, Commit)> { self.inner.write_commit(contents, sign_with).await } fn get_copy_records( &self, paths: Option<&[RepoPathBuf]>, root: &CommitId, head: &CommitId, ) -> BackendResult<BoxStream<'_, BackendResult<CopyRecord>>> { self.inner.get_copy_records(paths, root, head) } fn gc(&self, index: &dyn Index, keep_newer: SystemTime) -> BackendResult<()> { self.inner.gc(index, keep_newer) }}
// Copyright 2022 The Jujutsu Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use std::path::Path;
use std::pin::Pin;
use std::time::SystemTime;
use async_trait::async_trait;
use futures::AsyncRead;
use futures::stream::BoxStream;
use jj_cli::cli_util::CliRunner;
use jj_cli::cli_util::CommandHelper;
use jj_cli::command_error::CommandError;
use jj_cli::ui::Ui;
use jj_lib::backend::Backend;
use jj_lib::backend::BackendInitError;
use jj_lib::backend::BackendLoadError;
use jj_lib::backend::BackendResult;
use jj_lib::backend::ChangeId;
use jj_lib::backend::Commit;
use jj_lib::backend::CommitId;
use jj_lib::backend::CopyHistory;
use jj_lib::backend::CopyId;
use jj_lib::backend::CopyRecord;
use jj_lib::backend::FileId;
use jj_lib::backend::RelatedCopy;
use jj_lib::backend::SigningFn;
use jj_lib::backend::SymlinkId;
use jj_lib::backend::Tree;
use jj_lib::backend::TreeId;
use jj_lib::git_backend::GitBackend;
use jj_lib::index::Index;
use jj_lib::repo::StoreFactories;
use jj_lib::repo_path::RepoPath;
use jj_lib::repo_path::RepoPathBuf;
use jj_lib::settings::UserSettings;
use jj_lib::signing::Signer;
use jj_lib::workspace::Workspace;
use jj_lib::workspace::WorkspaceInitError;
#[derive(clap::Parser, Clone, Debug)]
enum CustomCommand {
/// Initialize a workspace using the Jit backend
InitJit,
}
fn create_store_factories() -> StoreFactories {
let mut store_factories = StoreFactories::empty();
// Register the backend so it can be loaded when the repo is loaded. The name
// must match `Backend::name()`.
store_factories.add_backend(
"jit",
Box::new(|settings, store_path| Ok(Box::new(JitBackend::load(settings, store_path)?))),
);
store_factories
}
async fn run_custom_command(
ui: &mut Ui,
command_helper: &CommandHelper,
command: CustomCommand,
) -> Result<(), CommandError> {
match command {
CustomCommand::InitJit => {
let wc_path = command_helper.cwd();
let settings = command_helper.settings_for_new_workspace(ui, wc_path)?.0;
// Initialize a workspace with the custom backend
Workspace::init_with_backend(
&settings,
wc_path,
&|settings, store_path| Ok(Box::new(JitBackend::init(settings, store_path)?)),
Signer::from_settings(&settings).map_err(WorkspaceInitError::SignInit)?,
)
.await?;
Ok(())
}
}
}
fn main() -> std::process::ExitCode {
CliRunner::init()
.add_store_factories(create_store_factories())
.add_subcommand(run_custom_command)
.run()
.into()
}
/// A commit backend that's extremely similar to the Git backend
#[derive(Debug)]
struct JitBackend {
inner: GitBackend,
}
impl JitBackend {
fn init(settings: &UserSettings, store_path: &Path) -> Result<Self, BackendInitError> {
let inner = GitBackend::init_internal(settings, store_path, gix::hash::Kind::default())?;
Ok(Self { inner })
}
fn load(settings: &UserSettings, store_path: &Path) -> Result<Self, BackendLoadError> {
let inner = GitBackend::load(settings, store_path)?;
Ok(Self { inner })
}
}
#[async_trait]
impl Backend for JitBackend {
fn name(&self) -> &'static str {
"jit"
}
fn commit_id_length(&self) -> usize {
self.inner.commit_id_length()
}
fn change_id_length(&self) -> usize {
self.inner.change_id_length()
}
fn root_commit_id(&self) -> &CommitId {
self.inner.root_commit_id()
}
fn root_change_id(&self) -> &ChangeId {
self.inner.root_change_id()
}
fn empty_tree_id(&self) -> &TreeId {
self.inner.empty_tree_id()
}
fn concurrency(&self) -> usize {
1
}
async fn read_file(
&self,
path: &RepoPath,
id: &FileId,
) -> BackendResult<Pin<Box<dyn AsyncRead + Send>>> {
self.inner.read_file(path, id).await
}
async fn write_file(
&self,
path: &RepoPath,
contents: &mut (dyn AsyncRead + Send + Unpin),
) -> BackendResult<FileId> {
self.inner.write_file(path, contents).await
}
async fn read_symlink(&self, path: &RepoPath, id: &SymlinkId) -> BackendResult<String> {
self.inner.read_symlink(path, id).await
}
async fn write_symlink(&self, path: &RepoPath, target: &str) -> BackendResult<SymlinkId> {
self.inner.write_symlink(path, target).await
}
async fn read_copy(&self, id: &CopyId) -> BackendResult<CopyHistory> {
self.inner.read_copy(id).await
}
async fn write_copy(&self, contents: &CopyHistory) -> BackendResult<CopyId> {
self.inner.write_copy(contents).await
}
async fn get_related_copies(&self, copy_id: &CopyId) -> BackendResult<Vec<RelatedCopy>> {
self.inner.get_related_copies(copy_id).await
}
async fn read_tree(&self, path: &RepoPath, id: &TreeId) -> BackendResult<Tree> {
self.inner.read_tree(path, id).await
}
async fn write_tree(&self, path: &RepoPath, contents: &Tree) -> BackendResult<TreeId> {
self.inner.write_tree(path, contents).await
}
async fn read_commit(&self, id: &CommitId) -> BackendResult<Commit> {
self.inner.read_commit(id).await
}
async fn write_commit(
&self,
contents: Commit,
sign_with: Option<&mut SigningFn>,
) -> BackendResult<(CommitId, Commit)> {
self.inner.write_commit(contents, sign_with).await
}
fn get_copy_records(
&self,
paths: Option<&[RepoPathBuf]>,
root: &CommitId,
head: &CommitId,
) -> BackendResult<BoxStream<'_, BackendResult<CopyRecord>>> {
self.inner.get_copy_records(paths, root, head)
}
fn gc(&self, index: &dyn Index, keep_newer: SystemTime) -> BackendResult<()> {
self.inner.gc(index, keep_newer)
}
}