[irods#103] Change timestamp key to '@timestamp' and type to uint64_t

libirods_rule_engine_plugin-audit_amqp.cpp

@@ -35,6 +35,7 @@
 #include <fmt/compile.h>
 
 // stl includes
+#include <cstdint>
 #include <version>
 #include <iostream>
 #include <sstream>
@@ -139,7 +140,7 @@ namespace
 				LOG_DEBUG,
 				fmt::format(
 					"[AUDIT] - Message with timestamp:[{}] had invalid UTF-8 in key:[{}] and was stored as base64 in key:[{}].",
-					json_obj.at("time_stamp").get_ref<const std::string&>(),
+					json_obj.at("@timestamp").get_ref<const std::uint64_t&>(),
 					key,
 					key_b64)); // irods::log
 		}
@@ -228,8 +229,8 @@ namespace
 		std::string log_file;
 
 		try {
-			auto time_ms = ts_clock::now().time_since_epoch() / std::chrono::milliseconds(1);
-			json_obj["time_stamp"] = std::to_string(time_ms);
+			std::uint64_t time_ms = ts_clock::now().time_since_epoch() / std::chrono::milliseconds(1);
+			json_obj["@timestamp"] = time_ms;
 			json_obj["hostname"] = host_name;
 			json_obj["pid"] = std::to_string(pid);
 			json_obj["action"] = "START";
@@ -279,8 +280,8 @@ namespace
 		std::string log_file;
 
 		try {
-			auto time_ms = ts_clock::now().time_since_epoch() / std::chrono::milliseconds(1);
-			json_obj["time_stamp"] = std::to_string(time_ms);
+			std::uint64_t time_ms = ts_clock::now().time_since_epoch() / std::chrono::milliseconds(1);
+			json_obj["@timestamp"] = time_ms;
 
 			char host_name[MAX_NAME_LEN];
 			gethostname(host_name, MAX_NAME_LEN);
@@ -369,8 +370,8 @@ namespace
 		std::string log_file;
 
 		try {
-			auto time_ms = ts_clock::now().time_since_epoch() / std::chrono::milliseconds(1);
-			json_obj["time_stamp"] = std::to_string(time_ms);
+			std::uint64_t time_ms = ts_clock::now().time_since_epoch() / std::chrono::milliseconds(1);
+			json_obj["@timestamp"] = time_ms;
 
 			char host_name[MAX_NAME_LEN];
 			gethostname(host_name, MAX_NAME_LEN);