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syntax = "proto3";

package gitaly;

option go_package = "gitlab.com/gitlab-org/gitaly/proto/go/gitalypb";

import "lint.proto";
import "shared.proto";

service BlobService {
  // GetBlob returns the contents of a blob object referenced by its object
  // ID. We use a stream to return a chunked arbitrarily large binary
  // response
  rpc GetBlob(GetBlobRequest) returns (stream GetBlobResponse) {
    option (op_type) = {
      op: ACCESSOR
    };
  }
  rpc GetBlobs(GetBlobsRequest) returns (stream GetBlobsResponse) {
    option (op_type) = {
      op: ACCESSOR
    };
  }

  // GetLFSPointers retrieves LFS pointers from a given set of object IDs.
  // This RPC filters all requested objects and only returns those which refer
  // to a valid LFS pointer.
  rpc GetLFSPointers(GetLFSPointersRequest) returns (stream GetLFSPointersResponse) {
    option (op_type) = {
      op: ACCESSOR
    };
  }

  // ListLFSPointers retrieves LFS pointers reachable from a given set of
  // revisions by doing a graph walk. This includes both normal revisions like
  // an object ID or branch, but also the pseudo-revisions "--all" and "--not"
  // as documented in git-rev-parse(1). Revisions which don't directly or
  // transitively reference any LFS pointers are ignored. It is not valid to
  // pass revisions which do not resolve to an existing object.
  rpc ListLFSPointers(ListLFSPointersRequest) returns (stream ListLFSPointersResponse) {
    option (op_type) = {
      op: ACCESSOR
    };
  }

  // ListAllLFSPointers retrieves all LFS pointers in the repository, including
  // those not reachable by any reference.
  rpc ListAllLFSPointers(ListAllLFSPointersRequest) returns (stream ListAllLFSPointersResponse) {
    option (op_type) = {
      op: ACCESSOR
    };
  }

}

message GetBlobRequest {

  Repository repository = 1[(target_repository)=true];
  // Object ID (SHA1) of the blob we want to get
  string oid = 2;
  // Maximum number of bytes we want to receive. Use '-1' to get the full blob no matter how big.
  int64 limit = 3;
}

message GetBlobResponse {
  // Blob size; present only in first response message
  int64 size = 1;
  // Chunk of blob data
  bytes data = 2;
  // Object ID of the actual blob returned. Empty if no blob was found.
  string oid = 3;
}

message GetBlobsRequest {

  message RevisionPath {
    string revision = 1;
    bytes path = 2;
  }

  Repository repository = 1[(target_repository)=true];
  // Revision/Path pairs of the blobs we want to get.
  repeated RevisionPath revision_paths = 2;
  // Maximum number of bytes we want to receive. Use '-1' to get the full blobs no matter how big.
  int64 limit = 3;
}

message GetBlobsResponse {
  // Blob size; present only on the first message per blob
  int64 size = 1;
  // Chunk of blob data, could span over multiple messages.
  bytes data = 2;
  // Object ID of the current blob. Only present on the first message per blob. Empty if no blob was found.
  string oid = 3;
  bool is_submodule = 4;
  int32 mode = 5;
  string revision = 6;
  bytes path = 7;
  ObjectType type = 8;
}

// LFSPointer is a git blob which points to an LFS object.
message LFSPointer {
  // Size is the size of the blob. This is not the size of the LFS object
  // pointed to.
  int64 size = 1;
  // Data is the bare data of the LFS pointer blob. It contains the pointer to
  // the LFS data in the format specified by the LFS project.
  bytes data = 2;
  // Oid is the object ID of the blob.
  string oid = 3;
}

message NewBlobObject {
  int64 size = 1;
  string oid = 2;
  bytes path = 3;
}

// GetLFSPointersRequest is a request for the GetLFSPointers RPC.
message GetLFSPointersRequest {
  // Repository is the repository for which LFS pointers should be retrieved
  // from.
  Repository repository = 1[(target_repository)=true];
  // BlobIds is the list of blobs to retrieve LFS pointers from. Must be a
  // non-empty list of blobs IDs to fetch.
  repeated string blob_ids = 2;
}

// GetLFSPointersResponse is a response for the GetLFSPointers RPC.
message GetLFSPointersResponse {
  // LfsPointers is the list of LFS pointers which were requested.
  repeated LFSPointer lfs_pointers = 1;
}

// ListLFSPointersRequest is a request for the ListLFSPointers RPC.
message ListLFSPointersRequest {
  // Repository is the repository for which LFS pointers should be retrieved
  // from.
  Repository repository = 1[(target_repository)=true];
  // Revisions is the list of revisions to retrieve LFS pointers from. Must be
  // a non-empty list.
  repeated string revisions = 2;
  // Limit limits the number of LFS pointers returned.
  int32 limit = 3;
}

// ListLFSPointersResponse is a response for the ListLFSPointers RPC.
message ListLFSPointersResponse {
  // LfsPointers is the list of LFS pointers which were requested.
  repeated LFSPointer lfs_pointers = 1;
}

// ListAllLFSPointersRequest is a request for the ListAllLFSPointers RPC.
message ListAllLFSPointersRequest {
  // Repository is the repository for which LFS pointers should be retrieved
  // from.
  Repository repository = 1[(target_repository)=true];
  // Limit limits the number of LFS pointers returned.
  int32 limit = 3;
}

// ListAllLFSPointersResponse is a response for the ListAllLFSPointers RPC.
message ListAllLFSPointersResponse {
  // LfsPointers is the list of LFS pointers which were requested.
  repeated LFSPointer lfs_pointers = 1;
}