1 files changed, 190 insertions, 0 deletions
diff --git a/src/fluent-bit/plugins/in_windows_exporter_metrics/we_wmi_system.c b/src/fluent-bit/plugins/in_windows_exporter_metrics/we_wmi_system.c
new file mode 100644
index 000000000..0eb7fffaf
--- /dev/null
+++ b/src/fluent-bit/plugins/in_windows_exporter_metrics/we_wmi_system.c
@@ -0,0 +1,190 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  Fluent Bit
+ *  ==========
+ *  Copyright (C) 2022 The Fluent Bit Authors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include <fluent-bit/flb_input_plugin.h>
+#include <fluent-bit/flb_config.h>
+#include <fluent-bit/flb_config_map.h>
+#include <fluent-bit/flb_error.h>
+#include <fluent-bit/flb_pack.h>
+
+#include "we.h"
+#include "we_wmi.h"
+#include "we_wmi_system.h"
+#include "we_util.h"
+#include "we_metric.h"
+
+static double nop_adjust(double value)
+{
+    return value;
+}
+
+int we_wmi_system_init(struct flb_we *ctx)
+{
+    ctx->wmi_system = flb_calloc(1, sizeof(struct we_wmi_system_counters));
+    if (!ctx->wmi_system) {
+        flb_errno();
+        return -1;
+    }
+    ctx->wmi_system->operational = FLB_FALSE;
+
+    struct cmt_gauge *g;
+
+    g = cmt_gauge_create(ctx->cmt, "windows", "system", "context_switches_total",
+                         "Total number of context switches",
+                         0, NULL);
+
+    if (!g) {
+        return -1;
+    }
+    ctx->wmi_system->context_switches = g;
+
+    g = cmt_counter_create(ctx->cmt, "windows", "system", "exception_dispatches_total",
+                           "Total number of exception_dispatches",
+                           0, NULL);
+
+    if (!g) {
+        return -1;
+    }
+    ctx->wmi_system->exception_dispatches = g;
+
+    g = cmt_gauge_create(ctx->cmt, "windows", "system", "processor_queue",
+                           "Length of processor queues",
+                           0, NULL);
+
+    if (!g) {
+        return -1;
+    }
+    ctx->wmi_system->processor_queue = g;
+
+    g = cmt_gauge_create(ctx->cmt, "windows", "system", "system_calls_total",
+                           "Total number of system calls",
+                           0, NULL);
+
+    if (!g) {
+        return -1;
+    }
+    ctx->wmi_system->system_calls = g;
+
+    g = cmt_gauge_create(ctx->cmt, "windows", "system", "system_up_time",
+                           "System boot time",
+                           0, NULL);
+
+    if (!g) {
+        return -1;
+    }
+    ctx->wmi_system->system_up_time = g;
+
+    g = cmt_gauge_create(ctx->cmt, "windows", "system", "threads",
+                           "Current number of threads",
+                           0, NULL);
+
+    if (!g) {
+        return -1;
+    }
+    ctx->wmi_system->threads = g;
+
+    ctx->wmi_system->info = flb_calloc(1, sizeof(struct wmi_query_spec));
+    if (!ctx->wmi_system->info) {
+        flb_errno();
+        return -1;
+    }
+    ctx->wmi_system->info->metric_instance = (void *)g;
+    ctx->wmi_system->info->type = CMT_GAUGE;
+    ctx->wmi_system->info->value_adjuster = nop_adjust;
+    ctx->wmi_system->info->wmi_counter = "Win32_PerfFormattedData_PerfOS_System";
+    ctx->wmi_system->info->wmi_property = "";
+    ctx->wmi_system->info->label_property_count = 0;
+    ctx->wmi_system->info->label_property_keys = NULL;
+    ctx->wmi_system->info->where_clause = NULL;
+
+    ctx->wmi_system->operational = FLB_TRUE;
+
+    return 0;
+}
+
+int we_wmi_system_exit(struct flb_we *ctx)
+{
+    ctx->wmi_system->operational = FLB_FALSE;
+
+    flb_free(ctx->wmi_system->info);
+    flb_free(ctx->wmi_system);
+
+    return 0;
+}
+
+int we_wmi_system_update(struct flb_we *ctx)
+{
+    uint64_t timestamp = 0;
+    IEnumWbemClassObject* enumerator = NULL;
+    HRESULT hr;
+
+    IWbemClassObject *class_obj = NULL;
+    ULONG ret = 0;
+    double val = 0;
+
+    if (!ctx->wmi_system->operational) {
+        flb_plg_error(ctx->ins, "system collector not yet in operational state");
+
+        return -1;
+    }
+
+    if (FAILED(we_wmi_coinitialize(ctx))) {
+        return -1;
+    }
+
+    timestamp = cfl_time_now();
+
+    if (FAILED(we_wmi_execute_query(ctx, ctx->wmi_system->info, &enumerator))) {
+        return -1;
+    }
+
+    while(enumerator) {
+        hr = enumerator->lpVtbl->Next(enumerator, WBEM_INFINITE, 1, &class_obj, &ret);
+
+        if(0 == ret) {
+            break;
+        }
+
+        val = we_wmi_get_property_value(ctx, "ContextSwitchesPersec", class_obj);
+        cmt_gauge_set(ctx->wmi_system->context_switches, timestamp, val, 0, NULL);
+
+        val = we_wmi_get_property_value(ctx, "ExceptionDispatchesPersec", class_obj);
+        cmt_gauge_set(ctx->wmi_system->exception_dispatches, timestamp, val, 0, NULL);
+
+        val = we_wmi_get_property_value(ctx, "ProcessorQueueLength", class_obj);
+        cmt_gauge_set(ctx->wmi_system->processor_queue, timestamp, val, 0, NULL);
+
+        val = we_wmi_get_property_value(ctx, "SystemCallsPersec", class_obj);
+        cmt_gauge_set(ctx->wmi_system->system_calls, timestamp, val, 0, NULL);
+
+        val = we_wmi_get_property_value(ctx, "SystemUpTime", class_obj);
+        cmt_gauge_set(ctx->wmi_system->system_up_time, timestamp, val, 0, NULL);
+
+        val = we_wmi_get_property_value(ctx, "Threads", class_obj);
+        cmt_gauge_set(ctx->wmi_system->threads, timestamp, val, 0, NULL);
+
+        class_obj->lpVtbl->Release(class_obj);
+    }
+
+    enumerator->lpVtbl->Release(enumerator);
+
+    we_wmi_cleanup(ctx);
+
+    return 0;
+}