1 files changed, 153 insertions, 0 deletions
diff --git a/ml/ml.cc b/ml/ml.cc
new file mode 100644
index 000000000..857d23d33
--- /dev/null
+++ b/ml/ml.cc
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "Config.h"
+#include "Dimension.h"
+#include "Host.h"
+
+using namespace ml;
+
+/*
+ * Assumptions:
+ *  1) hosts outlive their sets, and sets outlive their dimensions,
+ *  2) dimensions always have a set that has a host.
+ */
+
+void ml_init(void) {
+    Cfg.readMLConfig();
+}
+
+void ml_new_host(RRDHOST *RH) {
+    if (!Cfg.EnableAnomalyDetection)
+        return;
+
+    if (simple_pattern_matches(Cfg.SP_HostsToSkip, RH->hostname))
+        return;
+
+    Host *H = new Host(RH);
+    RH->ml_host = static_cast<ml_host_t>(H);
+
+    H->startAnomalyDetectionThreads();
+}
+
+void ml_delete_host(RRDHOST *RH) {
+    Host *H = static_cast<Host *>(RH->ml_host);
+    if (!H)
+        return;
+
+    H->stopAnomalyDetectionThreads();
+
+    delete H;
+    RH->ml_host = nullptr;
+}
+
+void ml_new_dimension(RRDDIM *RD) {
+    RRDSET *RS = RD->rrdset;
+
+    Host *H = static_cast<Host *>(RD->rrdset->rrdhost->ml_host);
+    if (!H)
+        return;
+
+    if (static_cast<unsigned>(RD->update_every) != H->updateEvery())
+        return;
+
+    if (simple_pattern_matches(Cfg.SP_ChartsToSkip, RS->name))
+        return;
+
+    Dimension *D = new Dimension(RD);
+    RD->state->ml_dimension = static_cast<ml_dimension_t>(D);
+    H->addDimension(D);
+}
+
+void ml_delete_dimension(RRDDIM *RD) {
+    Dimension *D = static_cast<Dimension *>(RD->state->ml_dimension);
+    if (!D)
+        return;
+
+    Host *H = static_cast<Host *>(RD->rrdset->rrdhost->ml_host);
+    H->removeDimension(D);
+
+    RD->state->ml_dimension = nullptr;
+}
+
+char *ml_get_host_info(RRDHOST *RH) {
+    nlohmann::json ConfigJson;
+
+    if (RH && RH->ml_host) {
+        Host *H = static_cast<Host *>(RH->ml_host);
+        H->getConfigAsJson(ConfigJson);
+        H->getDetectionInfoAsJson(ConfigJson);
+    } else {
+        ConfigJson["enabled"] = false;
+    }
+
+    return strdup(ConfigJson.dump(2, '\t').c_str());
+}
+
+bool ml_is_anomalous(RRDDIM *RD, double Value, bool Exists) {
+    Dimension *D = static_cast<Dimension *>(RD->state->ml_dimension);
+    if (!D)
+        return false;
+
+    D->addValue(Value, Exists);
+    bool Result = D->predict().second;
+    return Result;
+}
+
+char *ml_get_anomaly_events(RRDHOST *RH, const char *AnomalyDetectorName,
+                            int AnomalyDetectorVersion, time_t After, time_t Before) {
+    if (!RH || !RH->ml_host) {
+        error("No host");
+        return nullptr;
+    }
+
+    Host *H = static_cast<Host *>(RH->ml_host);
+    std::vector<std::pair<time_t, time_t>> TimeRanges;
+
+    bool Res = H->getAnomaliesInRange(TimeRanges, AnomalyDetectorName,
+                                                  AnomalyDetectorVersion,
+                                                  H->getUUID(),
+                                                  After, Before);
+    if (!Res) {
+        error("DB result is empty");
+        return nullptr;
+    }
+
+    nlohmann::json Json = TimeRanges;
+    return strdup(Json.dump(4).c_str());
+}
+
+char *ml_get_anomaly_event_info(RRDHOST *RH, const char *AnomalyDetectorName,
+                                int AnomalyDetectorVersion, time_t After, time_t Before) {
+    if (!RH || !RH->ml_host) {
+        error("No host");
+        return nullptr;
+    }
+
+    Host *H = static_cast<Host *>(RH->ml_host);
+
+    nlohmann::json Json;
+    bool Res = H->getAnomalyInfo(Json, AnomalyDetectorName,
+                                       AnomalyDetectorVersion,
+                                       H->getUUID(),
+                                       After, Before);
+    if (!Res) {
+        error("DB result is empty");
+        return nullptr;
+    }
+
+    return strdup(Json.dump(4, '\t').c_str());
+}
+
+#if defined(ENABLE_ML_TESTS)
+
+#include "gtest/gtest.h"
+
+int test_ml(int argc, char *argv[]) {
+    (void) argc;
+    (void) argv;
+
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
+
+#endif // ENABLE_ML_TESTS