add trace id and span id to metadata

Author: anmol-ap

agent/csec_metadata.c

@@ -13,15 +13,18 @@
 #include "php_includes.h"
 #include "php_compat.h"
 #include "php_newrelic.h"
+#include "util_strings.h"
 
 int nr_php_csec_get_metadata(const nr_php_csec_metadata_key_t key, char** p) {
   const char* value = NULL;
+  char* id_value = NULL;
+  bool is_allocated = false;
 
   if (NULL == p) {
     return -1;
   }
 
-  if (NULL == NRPRG(app)) {
+  if (NULL == NRPRG(app) || NULL == NRPRG(txn)) {
     return -2;
   }
 
@@ -57,15 +60,28 @@ int nr_php_csec_get_metadata(const nr_php_csec_metadata_key_t key, char** p) {
     case NR_PHP_CSEC_METADATA_PLICENSE:
       value = NRPRG(app)->plicense;
       break;
+    case NR_PHP_CSEC_METADATA_TRACE_ID:
+      id_value = nr_txn_get_current_trace_id(NRPRG(txn));
+      is_allocated = true;
+      break;
+    case NR_PHP_CSEC_METADATA_SPAN_ID:
+      id_value = nr_txn_get_current_span_id(NRPRG(txn));
+      is_allocated = true;
+      break;
     default:
       return -4;
   }
 
-  if (NULL == value) {
+  if (!is_allocated && NULL == value) {
     return -5;
   }
 
-  *p = nr_strdup(value);
+  if (is_allocated) {
+    *p = id_value;
+  } else {
+    *p = nr_strdup(value);
+  }
+
   if (NULL == *p) {
     return -3;
   }

agent/csec_metadata.h

@@ -7,15 +7,17 @@
 #define CSEC_METADATA_H
 
 typedef enum {
-    NR_PHP_CSEC_METADATA_HIGH_SECURITY = 1,
-    NR_PHP_CSEC_METADATA_ENTITY_NAME,
-    NR_PHP_CSEC_METADATA_ENTITY_TYPE,
-    NR_PHP_CSEC_METADATA_ENTITY_GUID,
-    NR_PHP_CSEC_METADATA_HOST_NAME,
-    NR_PHP_CSEC_METADATA_AGENT_RUN_ID,
-    NR_PHP_CSEC_METADATA_ACCOUNT_ID,
-    NR_PHP_CSEC_METADATA_LICENSE,
-    NR_PHP_CSEC_METADATA_PLICENSE
+  NR_PHP_CSEC_METADATA_HIGH_SECURITY = 1,
+  NR_PHP_CSEC_METADATA_ENTITY_NAME,
+  NR_PHP_CSEC_METADATA_ENTITY_TYPE,
+  NR_PHP_CSEC_METADATA_ENTITY_GUID,
+  NR_PHP_CSEC_METADATA_HOST_NAME,
+  NR_PHP_CSEC_METADATA_AGENT_RUN_ID,
+  NR_PHP_CSEC_METADATA_ACCOUNT_ID,
+  NR_PHP_CSEC_METADATA_LICENSE,
+  NR_PHP_CSEC_METADATA_PLICENSE,
+  NR_PHP_CSEC_METADATA_TRACE_ID,
+  NR_PHP_CSEC_METADATA_SPAN_ID
 } nr_php_csec_metadata_key_t;
 
 /*
@@ -33,7 +35,9 @@ typedef enum {
  *          -4 for invalid metadata key
  *          -5 for inability to retrieve metadata value
  */
-extern int nr_php_csec_get_metadata(const nr_php_csec_metadata_key_t k, char** value);
-typedef int (*nr_php_csec_get_metadata_t)(const nr_php_csec_metadata_key_t k, char** value);
+extern int nr_php_csec_get_metadata(const nr_php_csec_metadata_key_t k,
+                                    char** value);
+typedef int (*nr_php_csec_get_metadata_t)(const nr_php_csec_metadata_key_t k,
+                                          char** value);
 #define NR_PHP_CSEC_GET_METADATA "nr_php_csec_get_metadata"
 #endif