326 lines
9.1 KiB
Rust
326 lines
9.1 KiB
Rust
extern crate git2;
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extern crate pretty_env_logger;
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#[macro_use]
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extern crate log;
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extern crate indicatif;
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use git2::{Cred, Error, FetchOptions, Index, IndexEntry, IndexTime, Progress, PushOptions, RemoteCallbacks, ResetType, Repository, Signature, TreeBuilder};
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use git2::build::{CheckoutBuilder, RepoBuilder};
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use std::fs::read;
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use std::path::Path;
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use std::string::String;
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use std::str;
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use indicatif::{ProgressBar, ProgressStyle};
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pub struct BenchmarkRepository
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{
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repository: Repository,
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ssh_user: String,
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user_name: String,
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user_email: String,
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}
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impl BenchmarkRepository
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{
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fn progress_bar_style() -> ProgressStyle
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{
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ProgressStyle::default_bar()
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.template("{bar:74.on_black} {percent:>3} %")
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.progress_chars("█▉▊▋▌▍▎▏ ")
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}
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fn transfer_progress_callback(progress: Progress, progress_bar: &mut ProgressBar) -> bool
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{
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progress_bar.set_length(progress.total_objects() as u64);
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progress_bar.set_position(progress.received_objects() as u64);
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// continue the transfer
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true
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}
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fn push_update_reference_callback(reference: &str, status: Option<&str>) -> Result<(), Error>
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{
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match status
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{
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None => trace!("Reference “{}” pushed successfully to remote “origin”", reference),
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Some(error) => panic!("Couldn’t push reference “{}” to remote “origin”: {}", reference, error),
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};
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Ok(())
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}
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fn checkout_progress_callback(path: Option<&Path>, current: usize, total: usize, progress_bar: &mut ProgressBar)
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{
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progress_bar.set_length(total as u64);
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progress_bar.set_position(current as u64);
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}
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fn reset_origin(&self, remote_url: &str) -> &Self
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{
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let remote = match self.repository.find_remote("origin")
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{
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Ok(remote) => remote,
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Err(_) =>
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match self.repository.remote("origin", remote_url)
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{
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Ok(remote) => remote,
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Err(error) => panic!("Could not reset remote “origin”: {}", error),
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},
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};
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info!("Reset origin to “{}”", remote_url);
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self
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}
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fn fetch_branch(&self, branch_name: &str) -> &Self
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{
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let mut progress_bar = ProgressBar::new(0);
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progress_bar.set_style(BenchmarkRepository::progress_bar_style());
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{
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let mut remote_callbacks = RemoteCallbacks::new();
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remote_callbacks.credentials(
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|_, _, _|
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{
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match Cred::ssh_key_from_agent(&self.ssh_user)
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{
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Ok(credentials) => Ok(credentials),
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Err(error) => panic!("could not retrieve key pair for SSH authentication as user “{}”: {}", self.ssh_user, error),
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}
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});
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remote_callbacks.transfer_progress(
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|progress| BenchmarkRepository::transfer_progress_callback(progress, &mut progress_bar));
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let mut fetch_options = FetchOptions::new();
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fetch_options.remote_callbacks(remote_callbacks);
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let mut origin = self.repository.find_remote("origin").expect("could not find remote “origin”");
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info!("Updating branch “{}”", branch_name);
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if let Err(error) = origin.fetch(&[branch_name], Some(&mut fetch_options), None)
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{
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panic!("failed to fetch branch “{}” from remote “origin”: {}", branch_name, error);
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}
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}
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progress_bar.finish_and_clear();
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trace!("Branch “{}” is up-to-date", branch_name);
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self
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}
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fn update_branch_storage(&self, branch_name: &str) -> &Self
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{
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self.fetch_branch(branch_name);
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let mut progress_bar = ProgressBar::new(0);
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progress_bar.set_style(BenchmarkRepository::progress_bar_style());
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{
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let mut checkout_builder = CheckoutBuilder::new();
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let workdir = self.repository.path().parent().expect("invalid repository storage path");
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let branch_storage_path = workdir.join(branch_name);
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checkout_builder.force();
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checkout_builder.target_dir(&branch_storage_path);
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checkout_builder.progress(
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|path, current, total| BenchmarkRepository::checkout_progress_callback(path, current, total, &mut progress_bar));
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let object_id = match self.repository.refname_to_id(&format!("refs/remotes/origin/{}", branch_name))
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{
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Ok(object_id) => object_id,
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Err(error) => panic!("could not look up branch “{}” from remote “origin”: {}", branch_name, error),
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};
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let object = match self.repository.find_object(object_id, None)
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{
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Ok(object) => object,
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Err(error) => panic!("could not retrieve branch “{}” from remote “origin”: {}", branch_name, error),
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};
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info!("Updating branch storage “{}”", branch_name);
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if let Err(error) = self.repository.checkout_tree(&object, Some(&mut checkout_builder))
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{
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panic!("failed to update branch storage for “{}”: {}", branch_name, error);
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}
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}
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progress_bar.finish_and_clear();
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trace!("Branch storage “{}” is up-to-date", branch_name);
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self
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}
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fn init(base_path: &Path) -> Repository
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{
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let repository = match Repository::init_bare(base_path)
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{
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Ok(repository) => repository,
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Err(error) => panic!("failed to initialize Git repository in “{}”: {}", base_path.display(), error),
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};
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info!("Initialized Git repository in “{}”", base_path.display());
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repository
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}
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pub fn new(remote_url: &str, base_path: &Path, ssh_user: &str, user_name: &str, user_email: &str) -> BenchmarkRepository
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{
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let repository = match Repository::open(base_path)
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{
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Ok(repository) =>
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{
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info!("Using existing Git repository");
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repository
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},
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Err(_) => BenchmarkRepository::init(base_path),
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};
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let benchmark_repository =
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BenchmarkRepository
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{
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repository: repository,
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ssh_user: ssh_user.to_string(),
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user_name: user_name.to_string(),
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user_email: user_email.to_string(),
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};
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benchmark_repository
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.reset_origin(remote_url)
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.fetch_branch("test-config")
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.fetch_branch("test-results")
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.fetch_branch("test-status");
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benchmark_repository
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}
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pub fn read_file_as_index_entry(&self, file_path: &Path, result_file_path: &Path) -> IndexEntry
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{
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// create a new blob with the file contents
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let object_id = match self.repository.blob_path(file_path)
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{
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Ok(object_id) => object_id,
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Err(error) => panic!("Could not write blob for “{}”: {}", file_path.display(), error),
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};
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info!("Created object “{}” from “{}”", object_id, file_path.display());
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IndexEntry
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{
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ctime: IndexTime::new(0, 0),
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mtime: IndexTime::new(0, 0),
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dev: 0,
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ino: 0,
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mode: 0o100644,
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uid: 0,
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gid: 0,
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file_size: 0,
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id: object_id,
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flags: 0,
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flags_extended: 0,
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path: result_file_path.to_string_lossy().as_bytes().to_owned(),
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}
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}
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pub fn commit_file(&self, file_path: &Path, result_file_path: &Path, branch_name: &str)
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{
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let reference_name = format!("refs/remotes/origin/{}", branch_name);
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let reference = match self.repository.find_reference(&reference_name)
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{
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Ok(value) => value,
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Err(error) => panic!("Could not find reference “{}”: {}", reference_name, error),
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};
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let parent_tree = match reference.peel_to_tree()
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{
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Ok(value) => value,
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Err(error) => panic!("Could not peel reference to tree: {}", error),
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};
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let mut index = match Index::new()
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{
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Ok(value) => value,
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Err(error) => panic!("Could not create index: {}", error),
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};
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match index.read_tree(&parent_tree)
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{
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Ok(value) => value,
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Err(error) => panic!("Could not read parent tree into index: {}", error),
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};
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let index_entry = self.read_file_as_index_entry(file_path, result_file_path);
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if let Err(error) = index.add(&index_entry)
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{
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panic!("Could not add index entry: {}", error);
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}
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let tree_object_id = match index.write_tree_to(&self.repository)
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{
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Ok(value) => value,
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Err(error) => panic!("Could not write index to tree: {}", error),
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};
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let tree = match self.repository.find_tree(tree_object_id)
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{
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Ok(value) => value,
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Err(error) => panic!("Could obtain tree: {}", error),
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};
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info!("Created tree object “{}”", tree_object_id);
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let signature = Signature::now(&self.user_name, &self.user_email).expect("Could not create signature");
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let message = format!("Add file “{}”", result_file_path.display());
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let parent = match reference.peel_to_commit()
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{
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Ok(value) => value,
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Err(error) => panic!("Could not peel reference: {}", error),
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};
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let commit_id = match self.repository.commit(Some(&reference_name), &signature, &signature, &message, &tree, &[&parent])
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{
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Ok(value) => value,
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Err(error) => panic!("Could not write commit: {}", error),
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};
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let push_refspec = format!("refs/remotes/origin/{}:refs/heads/{}", branch_name, branch_name);
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trace!("Created commit “{}”, using refspec “{}”", commit_id, push_refspec);
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let mut remote_callbacks = RemoteCallbacks::new();
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remote_callbacks.credentials(
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|_, _, _|
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{
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match Cred::ssh_key_from_agent(&self.ssh_user)
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{
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Ok(credentials) => Ok(credentials),
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Err(error) => panic!("could not retrieve key pair for SSH authentication as user “{}”: {}", self.ssh_user, error),
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}
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});
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remote_callbacks.push_update_reference(
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|reference, status| BenchmarkRepository::push_update_reference_callback(reference, status));
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let mut push_options = PushOptions::new();
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push_options.remote_callbacks(remote_callbacks);
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let mut remote = self.repository.find_remote("origin").expect("");
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remote.push(&[&push_refspec], Some(&mut push_options)).expect("couldn’t push");
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}
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}
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#[cfg(test)]
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mod tests
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{
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}
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