Is integration with MySQL impossible due to lack of file descriptors? #4781
Replies: 1 comment 3 replies
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No file descriptors means it's not compatible with libuv. There are other libraries out there that implement the mysql wire protocol and expose a file descriptor-based API (e.g. the mysql node.js package, althoug that's javascript.) |
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I see, then do you know if there is a MySQL or Postgres C Library that exposes file descriptor? The node.js example does not help as I am using libuv C binding. |
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Some quick googling suggests libmysqlclient has a mysql_get_socket function that does what you need, example usage here: https://mariadb.com/kb/en/using-the-non-blocking-library/ |
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I see, thank you so much for the reference. I wonder what is this library you find? It does not seem to be the libmysql I was looking at before. |
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Hi, thanks to the help of the community I managed to integrate libuv with curl in my application. I am trying to do something similar with database engines such as MySQL and Postgres, but it seems much more difficult. I read from MySQL’s bug report and it seems that they do not expose file descriptors.
https://bugs.mysql.com/bug.php?id=99805
However, it seems that for uv_poll to work with library, file descriptors are necessary:
Does this mean that if a library does not provide file descriptors, it cannot be integrate with libuv? If so, integration with MySQL and other similar databases is impossible. Or is there another way to integrate libuv with MySQL different from how integration worked with curl? The C API does have a few non blocking functions but I ain’t sure if these are compatible with libuv.
https://dev.mysql.com/doc/c-api/8.4/en/c-api-asynchronous-interface.html
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