1 files changed, 52 insertions, 0 deletions
diff --git a/backends/backends.h b/backends/backends.h
new file mode 100644
index 00000000..468e4fed
--- /dev/null
+++ b/backends/backends.h
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_BACKENDS_H
+#define NETDATA_BACKENDS_H 1
+
+#include "daemon/common.h"
+
+typedef enum backend_options {
+    BACKEND_OPTION_NONE              = 0,
+
+    BACKEND_SOURCE_DATA_AS_COLLECTED = (1 << 0),
+    BACKEND_SOURCE_DATA_AVERAGE      = (1 << 1),
+    BACKEND_SOURCE_DATA_SUM          = (1 << 2),
+
+    BACKEND_OPTION_SEND_NAMES        = (1 << 16)
+} BACKEND_OPTIONS;
+
+#define BACKEND_OPTIONS_SOURCE_BITS (BACKEND_SOURCE_DATA_AS_COLLECTED|BACKEND_SOURCE_DATA_AVERAGE|BACKEND_SOURCE_DATA_SUM)
+#define BACKEND_OPTIONS_DATA_SOURCE(backend_options) (backend_options & BACKEND_OPTIONS_SOURCE_BITS)
+
+extern int global_backend_update_every;
+extern BACKEND_OPTIONS global_backend_options;
+extern const char *global_backend_prefix;
+
+extern void *backends_main(void *ptr);
+
+extern BACKEND_OPTIONS backend_parse_data_source(const char *source, BACKEND_OPTIONS backend_options);
+
+#ifdef BACKENDS_INTERNALS
+
+extern int backends_can_send_rrdset(BACKEND_OPTIONS backend_options, RRDSET *st);
+extern calculated_number backend_calculate_value_from_stored_data(
+        RRDSET *st                  // the chart
+        , RRDDIM *rd                // the dimension
+        , time_t after              // the start timestamp
+        , time_t before             // the end timestamp
+        , BACKEND_OPTIONS backend_options  // BACKEND_SOURCE_* bitmap
+        , time_t *first_timestamp   // the timestamp of the first point used in this response
+        , time_t *last_timestamp    // the timestamp that should be reported to backend
+);
+
+extern size_t backend_name_copy(char *d, const char *s, size_t usable);
+extern int discard_response(BUFFER *b, const char *backend);
+
+#endif // BACKENDS_INTERNALS
+
+#include "backends/prometheus/backend_prometheus.h"
+#include "backends/graphite/graphite.h"
+#include "backends/json/json.h"
+#include "backends/opentsdb/opentsdb.h"
+
+#endif /* NETDATA_BACKENDS_H */