Support stderr log-limit restriciton for serve

As `just serve` is used like a daemon it can be desirable to restrict
stderr, e.g., to only errors, while keeping a detailled log of the
activity in a file.

1 files changed, 17 insertions, 0 deletions

diff --git a/src/buildtool/main/serve.cpp b/src/buildtool/main/serve.cpp
index 9dc4d936..1c321c0b 100644
--- a/src/buildtool/main/serve.cpp
+++ b/src/buildtool/main/serve.cpp
@@ -239,6 +239,23 @@ void ReadJustServeConfig(gsl::not_null<CommandLineArguments*> const& clargs) {
             }
             clargs->log.log_limit = ToLogLevel(limit->Number());
         }
+        // read stderr restriction
+        auto stderr_limit =
+            logging->Get("restrict stderr limit", Expression::none_t{});
+        if (stderr_limit.IsNotNull()) {
+            if (not stderr_limit->IsNumber()) {
+                Logger::Log(
+                    LogLevel::Error,
+                    "In serve service config file {}:\nValue for logging key "
+                    "\"restrict stderr limit\" has to be numeric, but found {}",
+                    clargs->serve.config.string(),
+                    limit->ToString());
+                std::exit(kExitFailure);
+            }
+            clargs->log.restrict_stderr_log_limit =
+                ToLogLevel(stderr_limit->Number());
+        }
+        // read stderr restriction
     }
     // read client TLS authentication arguments
     auto auth_args = serve_config["authentication"];