feat add spdlog

third_party/prometheus/pull/tests/integration/sample_server_auth.cc

@@ -0,0 +1,45 @@
+#include <chrono>
+#include <memory>
+#include <string>
+#include <thread>
+
+#include "prometheus/client_metric.h"
+#include "prometheus/counter.h"
+#include "prometheus/exposer.h"
+#include "prometheus/family.h"
+#include "prometheus/registry.h"
+
+int main() {
+  using namespace prometheus;
+
+  // create an http server running on port 8080
+  Exposer exposer{"127.0.0.1:8080", 1};
+
+  auto registry = std::make_shared<Registry>();
+
+  // add a new counter family to the registry (families combine values with the
+  // same name, but distinct label dimensions)
+  auto& counter_family = BuildCounter()
+                             .Name("time_running_seconds_total")
+                             .Help("How many seconds is this server running?")
+                             .Register(*registry);
+
+  // add a counter to the metric family
+  auto& seconds_counter = counter_family.Add(
+      {{"another_label", "bar"}, {"yet_another_label", "baz"}});
+
+  // ask the exposer to scrape registry on incoming scrapes for "/metrics"
+  exposer.RegisterCollectable(registry, "/metrics");
+  exposer.RegisterAuth(
+      [](const std::string& user, const std::string& password) {
+        return user == "test_user" && password == "test_password";
+      },
+      "Some Auth Realm");
+
+  for (;;) {
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+    // increment the counters by one (second)
+    seconds_counter.Increment(1.0);
+  }
+  return 0;
+}