all required system headers in common.h; some progress on health variables

1 files changed, 58 insertions, 0 deletions

diff --git a/src/health.h b/src/health.h
new file mode 100644
index 0000000000..d4b55a5d02
--- /dev/null
+++ b/src/health.h
@@ -0,0 +1,58 @@
+#ifndef NETDATA_HEALTH_H
+#define NETDATA_HEALTH_H
+
+extern int rrdvar_compare(void *a, void *b);
+
+/*
+ * RRDVAR
+ * a variable
+ *
+ * There are 4 scopes: local (chart), context, host and global variables
+ *
+ * Standard global variables:
+ *  $now
+ *
+ * Standard host variables:
+ *  - none -
+ *
+ * Standard context variables:
+ *  - none -
+ *
+ * Standard local variables:
+ *  $last_updated
+ *  $last_collected_value
+ *  $last_value
+ *
+ */
+
+typedef struct rrdvar {
+    avl avl;
+
+    char *name;
+    uint32_t hash;
+
+    calculated_number *value;
+
+    time_t last_updated;
+} RRDVAR;
+
+typedef struct rrdcalc {
+    avl avl;
+
+    int group;          // grouping method: average, max, etc.
+    int before;         // ending point in time-series
+    int after;          // starting point in time-series
+    int update_every;   // update frequency for the calculation
+
+    const char *name;
+    calculated_number value;
+
+    RRDVAR *local;
+    RRDVAR *context;
+    RRDVAR *host;
+
+    struct rrdcalc *next;
+    struct rrdcalc *prev;
+} RRDCALC;
+
+#endif //NETDATA_HEALTH_H