2017-03-20 22:45
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Suppose I define the following gRPC service:

service Library {
  rpc Search(SearchBookRequest) returns (stream SearchBookResponse) {} 

message SearchBookRequest {
  string term = 1;
  int32 max_results = 2;

message SearchBookResponse {
  int32 book_id = 1;

It streams search results back up to a specified maximum. When interacting with the service via gRPC's Go API, am I allowed to do something like this?

for i:=0; i<maxResults; i++ {
  search_result, err := stream.Recv()
  if err == io.EOF {
    // Note: If `maxResults` are returned this will never be reached.
  if err != nil {
    log.Fatalf("search error: %v", err)
  fmt.Printf("Book-ID: %d
", search_result.BookId)

Or am I required to keep calling Recv until I get io.EOF to ensure that gRPC properly cleans up all its resources?

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1条回答 默认 最新

  • dq_1984 2017-03-21 23:10

    Your code is correct.

    You can exit on errors. You don't need to wait for an EOF.

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