Return stats as a JSON string rather than a KeyValue object.

There is no need to process the stats so a KeyValue is overkill.

Also remove the performance tests that check the stat totals since this is covered in the unit tests.

src/command/command.c

@@ -207,10 +207,10 @@ cmdEnd(int code, const String *errorMessage)
         MEM_CONTEXT_TEMP_BEGIN()
         {
             // Output statistics if there are any
-            const KeyValue *statKv = statToKv();
+            const String *const statJson = statToJson();
 
-            if (!varLstEmpty(kvKeyList(statKv)))
+            if (statJson != NULL)
-                LOG_DETAIL_FMT("statistics: %s", strZ(jsonFromKv(statKv)));
+                LOG_DETAIL_FMT("statistics: %s", strZ(statJson));
 
             // Basic info on command end
             String *info = strCatFmt(strNew(), "%s command end: ", strZ(cfgCommandRoleName()));

src/common/stat.c

@@ -6,13 +6,9 @@ Statistics Collector
 #include "common/debug.h"
 #include "common/memContext.h"
 #include "common/stat.h"
+#include "common/type/json.h"
 #include "common/type/list.h"
 
-/***********************************************************************************************************************************
-Stat output constants
-***********************************************************************************************************************************/
-VARIANT_STRDEF_EXTERN(STAT_VALUE_TOTAL_VAR,                         STAT_VALUE_TOTAL);
-
 /***********************************************************************************************************************************
 Cumulative statistics
 ***********************************************************************************************************************************/
@@ -106,21 +102,36 @@ statInc(const String *key)
 }
 
 /**********************************************************************************************************************************/
-KeyValue *
+String *
-statToKv(void)
+statToJson(void)
 {
     FUNCTION_TEST_VOID();
 
     ASSERT(statLocalData.memContext != NULL);
 
-    KeyValue *result = kvNew();
+    String *result = NULL;
+
+    if (!lstEmpty(statLocalData.stat))
+    {
+        MEM_CONTEXT_TEMP_BEGIN()
+        {
+            KeyValue *const kv = kvNew();
 
             for (unsigned int statIdx = 0; statIdx < lstSize(statLocalData.stat); statIdx++)
             {
-        Stat *stat = lstGet(statLocalData.stat, statIdx);
+                const Stat *const stat = lstGet(statLocalData.stat, statIdx);
 
-        KeyValue *statKv = kvPutKv(result, VARSTR(stat->key));
+                KeyValue *const statKv = kvPutKv(kv, VARSTR(stat->key));
-        kvPut(statKv, STAT_VALUE_TOTAL_VAR, VARUINT64(stat->total));
+                kvPut(statKv, VARSTRDEF("total"), VARUINT64(stat->total));
+            }
+
+            MEM_CONTEXT_PRIOR_BEGIN()
+            {
+                result = jsonFromKv(kv);
+            }
+            MEM_CONTEXT_PRIOR_END();
+        }
+        MEM_CONTEXT_TEMP_END();
     }
 
     FUNCTION_TEST_RETURN(result);

src/common/stat.h

@@ -12,13 +12,7 @@ iterations of a loop would likely be a bad idea.
 #ifndef COMMON_STAT_H
 #define COMMON_STAT_H
 
-#include "common/type/variant.h"
+#include "common/type/string.h"
-
-/***********************************************************************************************************************************
-Statistics output constants
-***********************************************************************************************************************************/
-#define STAT_VALUE_TOTAL                                            "total"
-    VARIANT_DECLARE(STAT_VALUE_TOTAL_VAR);
 
 /***********************************************************************************************************************************
 Functions
@@ -29,7 +23,7 @@ void statInit(void);
 // Increment stat by one
 void statInc(const String *key);
 
-// Output stats to a KeyValue
+// Output stats to JSON
-KeyValue *statToKv(void);
+String *statToJson(void);
 
 #endif

test/src/module/common/ioHttpTest.c

@@ -782,7 +782,7 @@ testRun(void)
         // -------------------------------------------------------------------------------------------------------------------------
         TEST_TITLE("statistics exist");
 
-        TEST_RESULT_BOOL(varLstEmpty(kvKeyList(statToKv())), false, "check");
+        TEST_RESULT_PTR_NE(statToJson(), NULL, "check");
     }
 
     FUNCTION_HARNESS_RETURN_VOID();

test/src/module/common/ioTlsTest.c

@@ -903,7 +903,7 @@ testRun(void)
         // -------------------------------------------------------------------------------------------------------------------------
         TEST_TITLE("stastistics exist");
 
-        TEST_RESULT_BOOL(varLstEmpty(kvKeyList(statToKv())), false, "check");
+        TEST_RESULT_PTR_NE(statToJson(), NULL, "check");
     }
 
     FUNCTION_HARNESS_RETURN_VOID();

test/src/module/common/statTest.c

@@ -19,6 +19,8 @@ testRun(void)
 
         TEST_RESULT_UINT(lstSize(statLocalData.stat), 0, "stat list is empty");
 
+        TEST_RESULT_STR_Z(statToJson(), NULL, "no stats yet");
+
         TEST_RESULT_VOID(statInc(statTlsClient), "inc tls.client");
         TEST_RESULT_UINT(lstSize(statLocalData.stat), 1, "stat list has one stat");
         TEST_RESULT_VOID(statInc(statTlsClient), "inc tls.client");
@@ -26,7 +28,8 @@ testRun(void)
         TEST_RESULT_VOID(statInc(statHttpSession), "inc http.session");
         TEST_RESULT_UINT(lstSize(statLocalData.stat), 2, "stat list has two stats");
 
-        TEST_RESULT_STR_Z(jsonFromKv(statToKv()), "{\"http.session\":{\"total\":1},\"tls.client\":{\"total\":2}}", "stat output");
+        TEST_RESULT_STR_Z(
+            statToJson(), "{\"http.session\":{\"total\":1},\"tls.client\":{\"total\":2}}", "stat output");
     }
 
     FUNCTION_HARNESS_RETURN_VOID();

test/src/module/performance/typeTest.c

@@ -352,18 +352,6 @@ testRun(void)
         }
 
         TEST_LOG_FMT("completed in %ums", (unsigned int)(timeMSec() - timeBegin));
-
-        // -------------------------------------------------------------------------------------------------------------------------
-        TEST_TITLE("check stats have correct values");
-
-        KeyValue *statKv = statToKv();
-
-        for (unsigned int statIdx = 0; statIdx < TEST_STAT_TOTAL; statIdx++)
-        {
-            TEST_RESULT_UINT(
-                varUInt64(kvGet(varKv(kvGet(statKv, VARSTR(statList[statIdx]))), STAT_VALUE_TOTAL_VAR)), runTotal,
-                strZ(strNewFmt("check stat %u", statIdx)));
-        }
     }
 
     // *****************************************************************************************************************************