Feat: Add stat_hourly & min. max. ping (#4267)

Co-authored-by: Frank Elsinga <frank@elsinga.de>

db/knex_migrations/2023-12-21-0000-stat-ping-min-max.js

@@ -0,0 +1,24 @@
+exports.up = function (knex) {
+    return knex.schema
+        .alterTable("stat_daily", function (table) {
+            table.float("ping_min").notNullable().defaultTo(0).comment("Minimum ping during this period in milliseconds");
+            table.float("ping_max").notNullable().defaultTo(0).comment("Maximum ping during this period in milliseconds");
+        })
+        .alterTable("stat_minutely", function (table) {
+            table.float("ping_min").notNullable().defaultTo(0).comment("Minimum ping during this period in milliseconds");
+            table.float("ping_max").notNullable().defaultTo(0).comment("Maximum ping during this period in milliseconds");
+        });
+
+};
+
+exports.down = function (knex) {
+    return knex.schema
+        .alterTable("stat_daily", function (table) {
+            table.dropColumn("ping_min");
+            table.dropColumn("ping_max");
+        })
+        .alterTable("stat_minutely", function (table) {
+            table.dropColumn("ping_min");
+            table.dropColumn("ping_max");
+        });
+};

db/knex_migrations/2023-12-22-0000-hourly-uptime.js

@@ -0,0 +1,26 @@
+exports.up = function (knex) {
+    return knex.schema
+        .createTable("stat_hourly", function (table) {
+            table.increments("id");
+            table.comment("This table contains the hourly aggregate statistics for each monitor");
+            table.integer("monitor_id").unsigned().notNullable()
+                .references("id").inTable("monitor")
+                .onDelete("CASCADE")
+                .onUpdate("CASCADE");
+            table.integer("timestamp")
+                .notNullable()
+                .comment("Unix timestamp rounded down to the nearest hour");
+            table.float("ping").notNullable().comment("Average ping in milliseconds");
+            table.float("ping_min").notNullable().defaultTo(0).comment("Minimum ping during this period in milliseconds");
+            table.float("ping_max").notNullable().defaultTo(0).comment("Maximum ping during this period in milliseconds");
+            table.smallint("up").notNullable();
+            table.smallint("down").notNullable();
+
+            table.unique([ "monitor_id", "timestamp" ]);
+        });
+};
+
+exports.down = function (knex) {
+    return knex.schema
+        .dropTable("stat_hourly");
+};