openresty / openresty/lua-resty-shell
Cannot be run in Resty CLI
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- Raku
- Stars
- 133
- Forks
- 19
- Avg merge
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- Merged PRs (30d)
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Description
I use resty to run unit tests against an openresty project, but any files which require this shell module will fail with this message:
Error → /usr/local/openresty/lualib/ngx/pipe.lua @ 500
suite ./spec/util_spec.lua
/usr/local/openresty/lualib/ngx/pipe.lua:500: cannot change a protected metatable
stack traceback:
/usr/local/openresty/lualib/ngx/pipe.lua:500: in main chunk
The fact that this is a test doesn't matter, even a simple require will crash the script. The trace points to this line:
local Proc = ffi.metatype("ngx_http_lua_ffi_pipe_proc_t", mt)
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with ngx/pipe.lua at line 500 and reproduce the failure by requiring the module through Resty CLI, using the stack trace in the issue as the reference. Investigate why ffi.metatype rejects the protected metatable in that environment; done means a simple require and the reported unit-test use no longer crash.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- lua
- Domain
- cli
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100