gitks/server/branch.rs

//! Copyright (c) 2022-2026 GitDataAi All rights reserved.

use crate::pb::branch_service_client::BranchServiceClient;
use crate::pb::*;

use super::{GitksService, into_status};

remote_client!(
    remote_branch_client,
    BranchServiceClient<tonic::transport::Channel>,
    "branch"
);

#[tonic::async_trait]
impl branch_service_server::BranchService for GitksService {
    async fn list_branches(
        &self,
        request: tonic::Request<ListBranchesRequest>,
    ) -> Result<tonic::Response<ListBranchesResponse>, tonic::Status> {
        let m = crate::metrics::RequestMetrics::new("gitks.BranchService/ListBranches");
        let inner = request.into_inner();
        let _rate = self.acquire_rate_limit(inner.repository.as_ref()).await?;
        let repo = self.repo_label(inner.repository.as_ref());
        let span = tracing::info_span!("branch.list_branches", %repo);
        let _enter = span.enter();
        let gb = match self.resolve(inner.repository.as_ref()) {
            Ok(gb) => gb,
            Err(err) if err.code() == tonic::Code::NotFound => {
                if let Some(mut client) =
                    remote_branch_client(self, inner.repository.as_ref(), false).await?
                {
                    m.record("ok");
                    return client.list_branches(inner).await;
                }
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
            Err(err) => {
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
        };
        let resp = gb.list_branches(inner).map_err(into_status)?;
        tracing::info!(%repo, count = resp.branches.len(), "list_branches done");
        m.record("ok");
        Ok(tonic::Response::new(resp))
    }

    async fn get_branch(
        &self,
        request: tonic::Request<GetBranchRequest>,
    ) -> Result<tonic::Response<Branch>, tonic::Status> {
        let m = crate::metrics::RequestMetrics::new("gitks.BranchService/GetBranch");
        let inner = request.into_inner();
        let _rate = self.acquire_rate_limit(inner.repository.as_ref()).await?;
        let repo = self.repo_label(inner.repository.as_ref());
        let name = inner.name.clone();
        let span = tracing::info_span!("branch.get_branch", %repo, %name);
        let _enter = span.enter();
        let gb = match self.resolve(inner.repository.as_ref()) {
            Ok(gb) => gb,
            Err(err) if err.code() == tonic::Code::NotFound => {
                if let Some(mut client) =
                    remote_branch_client(self, inner.repository.as_ref(), false).await?
                {
                    m.record("ok");
                    return client.get_branch(inner).await;
                }
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
            Err(err) => {
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
        };
        let resp = gb.get_branch(inner).map_err(into_status)?;
        m.record("ok");
        Ok(tonic::Response::new(resp))
    }

    async fn create_branch(
        &self,
        request: tonic::Request<CreateBranchRequest>,
    ) -> Result<tonic::Response<Branch>, tonic::Status> {
        let m = crate::metrics::RequestMetrics::new("gitks.BranchService/CreateBranch");
        let inner = request.into_inner();
        let _rate = self.acquire_rate_limit(inner.repository.as_ref()).await?;
        let repo = self.repo_label(inner.repository.as_ref());
        let name = inner.name.clone();
        let span = tracing::info_span!("branch.create_branch", %repo, %name);
        let _enter = span.enter();
        let gb = match self.resolve(inner.repository.as_ref()) {
            Ok(gb) => gb,
            Err(err) if err.code() == tonic::Code::NotFound => {
                if let Some(mut client) =
                    remote_branch_client(self, inner.repository.as_ref(), true).await?
                {
                    m.record("ok");
                    return client.create_branch(inner).await;
                }
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
            Err(err) => {
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
        };
        let resp = gb.create_branch(inner).map_err(into_status)?;
        tracing::info!(%repo, %name, "branch created");
        self.notify_ref_update(&repo, &format!("refs/heads/{}", name), "", "");
        m.record("ok");
        Ok(tonic::Response::new(resp))
    }

    async fn delete_branch(
        &self,
        request: tonic::Request<DeleteBranchRequest>,
    ) -> Result<tonic::Response<()>, tonic::Status> {
        let m = crate::metrics::RequestMetrics::new("gitks.BranchService/DeleteBranch");
        let inner = request.into_inner();
        let _rate = self.acquire_rate_limit(inner.repository.as_ref()).await?;
        let repo = self.repo_label(inner.repository.as_ref());
        let name = inner.name.clone();
        let span = tracing::info_span!("branch.delete_branch", %repo, %name);
        let _enter = span.enter();
        let gb = match self.resolve(inner.repository.as_ref()) {
            Ok(gb) => gb,
            Err(err) if err.code() == tonic::Code::NotFound => {
                if let Some(mut client) =
                    remote_branch_client(self, inner.repository.as_ref(), true).await?
                {
                    m.record("ok");
                    return client.delete_branch(inner).await;
                }
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
            Err(err) => {
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
        };
        gb.delete_branch(inner).map_err(into_status)?;
        tracing::info!(%repo, %name, "branch deleted");
        self.notify_ref_update(&repo, &format!("refs/heads/{}", name), "", "");
        m.record("ok");
        Ok(tonic::Response::new(()))
    }

    async fn rename_branch(
        &self,
        request: tonic::Request<RenameBranchRequest>,
    ) -> Result<tonic::Response<Branch>, tonic::Status> {
        let m = crate::metrics::RequestMetrics::new("gitks.BranchService/RenameBranch");
        let inner = request.into_inner();
        let _rate = self.acquire_rate_limit(inner.repository.as_ref()).await?;
        let repo = self.repo_label(inner.repository.as_ref());
        let old = inner.old_name.clone();
        let new = inner.new_name.clone();
        let span = tracing::info_span!("branch.rename_branch", %repo, %old, %new);
        let _enter = span.enter();
        let gb = match self.resolve(inner.repository.as_ref()) {
            Ok(gb) => gb,
            Err(err) if err.code() == tonic::Code::NotFound => {
                if let Some(mut client) =
                    remote_branch_client(self, inner.repository.as_ref(), true).await?
                {
                    m.record("ok");
                    return client.rename_branch(inner).await;
                }
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
            Err(err) => {
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
        };
        let resp = gb.rename_branch(inner).map_err(into_status)?;
        tracing::info!(%repo, old = %old, new = %new, "branch renamed");
        self.notify_ref_update(&repo, &format!("refs/heads/{}", new), "", "");
        m.record("ok");
        Ok(tonic::Response::new(resp))
    }

    async fn update_branch_target(
        &self,
        request: tonic::Request<UpdateBranchTargetRequest>,
    ) -> Result<tonic::Response<Branch>, tonic::Status> {
        let m = crate::metrics::RequestMetrics::new("gitks.BranchService/UpdateBranchTarget");
        let inner = request.into_inner();
        let _rate = self.acquire_rate_limit(inner.repository.as_ref()).await?;
        let repo = self.repo_label(inner.repository.as_ref());
        let name = inner.name.clone();
        let span = tracing::info_span!("branch.update_branch_target", %repo, %name);
        let _enter = span.enter();
        let gb = match self.resolve(inner.repository.as_ref()) {
            Ok(gb) => gb,
            Err(err) if err.code() == tonic::Code::NotFound => {
                if let Some(mut client) =
                    remote_branch_client(self, inner.repository.as_ref(), true).await?
                {
                    m.record("ok");
                    return client.update_branch_target(inner).await;
                }
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
            Err(err) => {
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
        };
        let resp = gb.update_branch_target(inner).map_err(into_status)?;
        tracing::info!(%repo, %name, "branch target updated");
        self.notify_ref_update(&repo, &format!("refs/heads/{}", name), "", "");
        m.record("ok");
        Ok(tonic::Response::new(resp))
    }

    async fn set_branch_upstream(
        &self,
        request: tonic::Request<SetBranchUpstreamRequest>,
    ) -> Result<tonic::Response<Branch>, tonic::Status> {
        let m = crate::metrics::RequestMetrics::new("gitks.BranchService/SetBranchUpstream");
        let inner = request.into_inner();
        let _rate = self.acquire_rate_limit(inner.repository.as_ref()).await?;
        let repo = self.repo_label(inner.repository.as_ref());
        let name = inner.name.clone();
        let span = tracing::info_span!("branch.set_branch_upstream", %repo, %name);
        let _enter = span.enter();
        let gb = match self.resolve(inner.repository.as_ref()) {
            Ok(gb) => gb,
            Err(err) if err.code() == tonic::Code::NotFound => {
                if let Some(mut client) =
                    remote_branch_client(self, inner.repository.as_ref(), true).await?
                {
                    m.record("ok");
                    return client.set_branch_upstream(inner).await;
                }
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
            Err(err) => {
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
        };
        let resp = gb.set_branch_upstream(inner).map_err(into_status)?;
        tracing::info!(%repo, %name, "branch upstream set");
        self.notify_ref_update(&repo, &format!("refs/heads/{}", name), "", "");
        m.record("ok");
        Ok(tonic::Response::new(resp))
    }

    async fn compare_branch(
        &self,
        request: tonic::Request<CompareBranchRequest>,
    ) -> Result<tonic::Response<CompareBranchResponse>, tonic::Status> {
        let m = crate::metrics::RequestMetrics::new("gitks.BranchService/CompareBranch");
        let inner = request.into_inner();
        let _rate = self.acquire_rate_limit(inner.repository.as_ref()).await?;
        let repo = self.repo_label(inner.repository.as_ref());
        let source = inner.source_branch.clone();
        let target = inner.target_branch.clone();
        let span = tracing::info_span!("branch.compare_branch", %repo, %source, %target);
        let _enter = span.enter();
        let gb = match self.resolve(inner.repository.as_ref()) {
            Ok(gb) => gb,
            Err(err) if err.code() == tonic::Code::NotFound => {
                if let Some(mut client) =
                    remote_branch_client(self, inner.repository.as_ref(), false).await?
                {
                    m.record("ok");
                    return client.compare_branch(inner).await;
                }
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
            Err(err) => {
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
        };
        let resp = gb.compare_branch(inner).map_err(into_status)?;
        tracing::info!(%repo, %source, %target, ahead = resp.ahead_by, behind = resp.behind_by, "branch compared");
        m.record("ok");
        Ok(tonic::Response::new(resp))
    }
}