1 files changed, 100 insertions, 0 deletions
diff --git a/library/cpp/monlib/deprecated/json/writer.cpp b/library/cpp/monlib/deprecated/json/writer.cpp
new file mode 100644
index 0000000000..a581f2e07a
--- /dev/null
+++ b/library/cpp/monlib/deprecated/json/writer.cpp
@@ -0,0 +1,100 @@
+#include "writer.h"
+
+namespace NMonitoring {
+    TDeprecatedJsonWriter::TDeprecatedJsonWriter(IOutputStream* out)
+        : JsonWriter(out, false)
+        , State(STATE_ROOT)
+    {
+    }
+
+    void TDeprecatedJsonWriter::TransitionState(EState current, EState next) {
+        if (State != current) {
+            ythrow yexception() << "wrong state";
+        }
+        State = next;
+    }
+
+    void TDeprecatedJsonWriter::OpenDocument() {
+        TransitionState(STATE_ROOT, STATE_DOCUMENT);
+        JsonWriter.OpenMap();
+    }
+
+    void TDeprecatedJsonWriter::CloseDocument() {
+        TransitionState(STATE_DOCUMENT, STATE_ROOT);
+        JsonWriter.CloseMap();
+        JsonWriter.Flush();
+    }
+
+    void TDeprecatedJsonWriter::OpenCommonLabels() {
+        TransitionState(STATE_DOCUMENT, STATE_COMMON_LABELS);
+        JsonWriter.Write("commonLabels");
+        JsonWriter.OpenMap();
+    }
+
+    void TDeprecatedJsonWriter::CloseCommonLabels() {
+        TransitionState(STATE_COMMON_LABELS, STATE_DOCUMENT);
+        JsonWriter.CloseMap();
+    }
+
+    void TDeprecatedJsonWriter::WriteCommonLabel(TStringBuf name, TStringBuf value) {
+        TransitionState(STATE_COMMON_LABELS, STATE_COMMON_LABELS);
+        JsonWriter.Write(name, value);
+    }
+
+    void TDeprecatedJsonWriter::OpenMetrics() {
+        TransitionState(STATE_DOCUMENT, STATE_METRICS);
+        JsonWriter.Write("sensors");
+        JsonWriter.OpenArray();
+    }
+
+    void TDeprecatedJsonWriter::CloseMetrics() {
+        TransitionState(STATE_METRICS, STATE_DOCUMENT);
+        JsonWriter.CloseArray();
+    }
+
+    void TDeprecatedJsonWriter::OpenMetric() {
+        TransitionState(STATE_METRICS, STATE_METRIC);
+        JsonWriter.OpenMap();
+    }
+
+    void TDeprecatedJsonWriter::CloseMetric() {
+        TransitionState(STATE_METRIC, STATE_METRICS);
+        JsonWriter.CloseMap();
+    }
+
+    void TDeprecatedJsonWriter::OpenLabels() {
+        TransitionState(STATE_METRIC, STATE_LABELS);
+        JsonWriter.Write("labels");
+        JsonWriter.OpenMap();
+    }
+
+    void TDeprecatedJsonWriter::CloseLabels() {
+        TransitionState(STATE_LABELS, STATE_METRIC);
+        JsonWriter.CloseMap();
+    }
+
+    void TDeprecatedJsonWriter::WriteLabel(TStringBuf name, TStringBuf value) {
+        TransitionState(STATE_LABELS, STATE_LABELS);
+        JsonWriter.Write(name, value);
+    }
+
+    void TDeprecatedJsonWriter::WriteModeDeriv() {
+        TransitionState(STATE_METRIC, STATE_METRIC);
+        JsonWriter.Write("mode", "deriv");
+    }
+
+    void TDeprecatedJsonWriter::WriteValue(long long value) {
+        TransitionState(STATE_METRIC, STATE_METRIC);
+        JsonWriter.Write("value", value);
+    }
+
+    void TDeprecatedJsonWriter::WriteDoubleValue(double value) {
+        TransitionState(STATE_METRIC, STATE_METRIC);
+        JsonWriter.Write("value", value);
+    }
+
+    void TDeprecatedJsonWriter::WriteTs(ui64 ts) {
+        TransitionState(STATE_METRIC, STATE_METRIC);
+        JsonWriter.Write("ts", ts);
+    }
+}