[Tarantool-patches] [PATCH luajit] ci: conditionally install lua-cjson for perf job

[Sergey Kaplun]

We have encountered the flakiness of the network on our CI runners. It
happens only on lua-cjson installation and only in some particular job
run.

This patch helps to deal with it by installing this package only if it
is not installed in the system. Also, it installs it only for Lua 5.1,
which is compatible with LuaJIT.
---

Branch: https://github.com/tarantool/luajit/tree/skaplun/ci-perf-install-conditionally-lua-cjson

 .github/actions/setup-performance/action.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.github/actions/setup-performance/action.yml b/.github/actions/setup-performance/action.yml
index 4e0e1929..3c2a8230 100644
--- a/.github/actions/setup-performance/action.yml
+++ b/.github/actions/setup-performance/action.yml
@@ -11,7 +11,9 @@ runs:
         apt install -y curl luarocks util-linux
       shell: bash
     - name: Install Lua modules
-      run: luarocks install lua-cjson
+      run: >
+        luarocks --lua-version=5.1 show lua-cjson ||
+        luarocks --lua-version=5.1 install lua-cjson
       shell: bash
     - name: Run script to setup Linux environment
       run: sh ./perf/helpers/setup_env.sh
-- 
2.53.0