gitks/server/tag.rs

use crate::pb::*;
use crate::pb::tag_service_client::TagServiceClient;

use super::{GitksService, into_status};

async fn remote_tag_client(
    svc: &GitksService,
    header: Option<&RepositoryHeader>,
    is_write: bool,
) -> Result<Option<TagServiceClient<tonic::transport::Channel>>, tonic::Status> {
    let header = match header {
        Some(h) => h,
        None => return Ok(None),
    };
    let Some(route) = svc.route_repository(header, is_write).await? else {
        return Ok(None);
    };
    tracing::info!(storage_name = %route.storage_name, relative_path = %route.relative_path, actor_name = %route.actor_name, grpc_addr = %route.grpc_addr, "forwarding tag rpc");
    let endpoint = super::remote_endpoint(&route.grpc_addr).await?;
    let client = TagServiceClient::connect(endpoint)
        .await
        .map_err(|e| tonic::Status::unavailable(e.to_string()))?;
    Ok(Some(client))
}

#[tonic::async_trait]
impl tag_service_server::TagService for GitksService {
    async fn list_tags(
        &self,
        request: tonic::Request<ListTagsRequest>,
    ) -> Result<tonic::Response<ListTagsResponse>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let span = tracing::info_span!("tag.list_tags", %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_tag_client(self, inner.repository.as_ref(), false).await? {
                    return client.list_tags(inner).await;
                }
                return Err(err);
            }
            Err(err) => return Err(err),
        };
        let resp = gb.list_tags(inner).map_err(into_status)?;
        tracing::info!(%repo, count = resp.tags.len(), "list_tags done");
        Ok(tonic::Response::new(resp))
    }

    async fn get_tag(
        &self,
        request: tonic::Request<GetTagRequest>,
    ) -> Result<tonic::Response<Tag>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let name = inner.name.clone();
        let span = tracing::info_span!("tag.get_tag", %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_tag_client(self, inner.repository.as_ref(), false).await? {
                    return client.get_tag(inner).await;
                }
                return Err(err);
            }
            Err(err) => return Err(err),
        };
        let resp = gb.get_tag(inner).map_err(into_status)?;
        Ok(tonic::Response::new(resp))
    }

    async fn create_tag(
        &self,
        request: tonic::Request<CreateTagRequest>,
    ) -> Result<tonic::Response<Tag>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let name = inner.name.clone();
        let span = tracing::info_span!("tag.create_tag", %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_tag_client(self, inner.repository.as_ref(), true).await? {
                    return client.create_tag(inner).await;
                }
                return Err(err);
            }
            Err(err) => return Err(err),
        };
        let resp = gb.create_tag(inner).map_err(into_status)?;
        tracing::info!(%repo, %name, "tag created");
        self.notify_ref_update(&repo, &format!("refs/tags/{}", name), "", "");
        Ok(tonic::Response::new(resp))
    }

    async fn delete_tag(
        &self,
        request: tonic::Request<DeleteTagRequest>,
    ) -> Result<tonic::Response<()>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let name = inner.name.clone();
        let span = tracing::info_span!("tag.delete_tag", %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_tag_client(self, inner.repository.as_ref(), true).await? {
                    return client.delete_tag(inner).await;
                }
                return Err(err);
            }
            Err(err) => return Err(err),
        };
        gb.delete_tag(inner).map_err(into_status)?;
        tracing::info!(%repo, %name, "tag deleted");
        self.notify_ref_update(&repo, &format!("refs/tags/{}", name), "", "");
        Ok(tonic::Response::new(()))
    }

    async fn verify_tag(
        &self,
        request: tonic::Request<VerifyTagRequest>,
    ) -> Result<tonic::Response<VerifiedSignature>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let name = inner.name.clone();
        let span = tracing::info_span!("tag.verify_tag", %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_tag_client(self, inner.repository.as_ref(), false).await? {
                    return client.verify_tag(inner).await;
                }
                return Err(err);
            }
            Err(err) => return Err(err),
        };
        let resp = gb.verify_tag(inner).map_err(into_status)?;
        tracing::info!(%repo, %name, verified = resp.verified, "tag verified");
        Ok(tonic::Response::new(resp))
    }
}