fix(tracer): remove debug logs

Signed-off-by: Alexandre Rulleau <alexandre.rulleau@datadoghq.com>

Author: Leiyks

ext/sidecar.c

@@ -268,7 +268,6 @@ ddog_SidecarTransport *ddtrace_sidecar_connect(bool is_fork) {
     switch (mode) {
     case DD_TRACE_SIDECAR_CONNECTION_MODE_SUBPROCESS:
         // Force subprocess only
-        LOG(DEBUG, "Sidecar connection mode: subprocess (forced)");
         transport = ddtrace_sidecar_connect_subprocess();
         if (!transport) {
             LOG(ERROR, "Subprocess connection failed (mode=subprocess, no fallback)");
@@ -277,7 +276,6 @@ ddog_SidecarTransport *ddtrace_sidecar_connect(bool is_fork) {
 
     case DD_TRACE_SIDECAR_CONNECTION_MODE_THREAD:
         // Force thread only
-        LOG(DEBUG, "Sidecar connection mode: thread (forced)");
         transport = ddtrace_sidecar_connect_thread();
         if (!transport) {
             LOG(ERROR, "Thread connection failed (mode=thread, no fallback)");
@@ -287,23 +285,22 @@ ddog_SidecarTransport *ddtrace_sidecar_connect(bool is_fork) {
     case DD_TRACE_SIDECAR_CONNECTION_MODE_AUTO:
     default:
         // Try subprocess first, fallback to thread if needed
-        LOG(DEBUG, "Sidecar connection mode: auto (trying subprocess first)");
         transport = ddtrace_sidecar_connect_subprocess();
 
-        if (transport) {
-            LOG(DEBUG, "Connected to sidecar via subprocess");
-        } else if (!ddtrace_endpoint) {
-            // Don't try fallback if endpoint is invalid - both modes need a valid endpoint
-            // The "Invalid DD_TRACE_AGENT_URL" error was already logged during endpoint creation
-        } else {
-            // Subprocess failed but endpoint is valid - try thread mode fallback
-            LOG(WARN, "Subprocess connection failed, falling back to thread mode");
-            transport = ddtrace_sidecar_connect_thread();
-
-            if (transport) {
-                LOG(INFO, "Connected to sidecar via thread (fallback)");
+        if (!transport) {
+            if (!ddtrace_endpoint) {
+                // Don't try fallback if endpoint is invalid - both modes need a valid endpoint
+                // The "Invalid DD_TRACE_AGENT_URL" error was already logged during endpoint creation
             } else {
-                LOG(ERROR, "Both subprocess and thread connections failed, sidecar unavailable");
+                // Subprocess failed but endpoint is valid - try thread mode fallback
+                LOG(WARN, "Subprocess connection failed, falling back to thread mode");
+                transport = ddtrace_sidecar_connect_thread();
+
+                if (transport) {
+                    LOG(INFO, "Connected to sidecar via thread (fallback)");
+                } else {
+                    LOG(ERROR, "Both subprocess and thread connections failed, sidecar unavailable");
+                }
             }
         }
         break;

tests/ext/sandbox/die_in_sandbox.phpt

@@ -17,8 +17,6 @@ x();
 
 ?>
 --EXPECTF--
-[ddtrace] [debug] Sidecar connection mode: auto (trying subprocess first)
-[ddtrace] [debug] Connected to sidecar via subprocess
 [ddtrace] [warning] UnwindExit thrown in ddtrace's closure defined at %s:%d for x(): <exit> in Unknown on line 0
 [ddtrace] [span] Encoding span: Span { service: die_in_sandbox.php, name: die_in_sandbox.php, resource: die_in_sandbox.php, type: cli, trace_id: %d, span_id: %d, parent_id: %d, start: %d, duration: %d, error: %d, meta: %s, metrics: %s, meta_struct: %s, span_links: %s, span_events: %s }
 [ddtrace] [span] Encoding span: Span { service: die_in_sandbox.php, name: x, resource: x, type: cli, trace_id: %d, span_id: %d, parent_id: %d, start: %d, duration: %d, error: %d, meta: %s, metrics: %s, meta_struct: %s, span_links: %s, span_events: %s }

tests/ext/span_on_close.phpt

@@ -24,8 +24,6 @@ $span->onClose = [
 
 ?>
 --EXPECTF--
-[ddtrace] [debug] Sidecar connection mode: auto (trying subprocess first)
-[ddtrace] [debug] Connected to sidecar via subprocess
 Second
 First
 [ddtrace] [span] Encoding span: Span { service: %s, name: root span, resource: root span, type: cli, trace_id: %d, span_id: %d, parent_id: %d, start: %d, duration: %d, error: %d, meta: %s, metrics: %s, meta_struct: %s, span_links: %s, span_events: %s }

tests/ext/startup_logging_json_config.phpt

@@ -52,8 +52,6 @@ dd_dump_startup_logs($logs, [
 ]);
 ?>
 --EXPECT--
-[ddtrace] [debug] Sidecar connection mode: auto (trying subprocess first)
-[ddtrace] [debug] Connected to sidecar via subprocess
 Sanity check
 env: "my-env"
 service: "my-service"