enhance(backend): improve chart engine

packages/backend/src/services/chart/charts/drive.ts

@@ -0,0 +1,95 @@
+import autobind from 'autobind-decorator';
+import Chart, { Obj, DeepPartial } from '../core';
+import { SchemaType } from '@/misc/schema';
+import { DriveFiles } from '@/models/index';
+import { Not, IsNull } from 'typeorm';
+import { DriveFile } from '@/models/entities/drive-file';
+import { name, schema } from './entities/drive';
+
+type DriveLog = SchemaType<typeof schema>;
+
+/**
+ * ドライブに関するチャート
+ */
+// eslint-disable-next-line import/no-default-export
+export default class DriveChart extends Chart<DriveLog> {
+	constructor() {
+		super(name, schema);
+	}
+
+	@autobind
+	protected genNewLog(latest: DriveLog): DeepPartial<DriveLog> {
+		return {
+			local: {
+				totalCount: latest.local.totalCount,
+				totalSize: latest.local.totalSize,
+			},
+			remote: {
+				totalCount: latest.remote.totalCount,
+				totalSize: latest.remote.totalSize,
+			},
+		};
+	}
+
+	@autobind
+	protected aggregate(logs: DriveLog[]): DriveLog {
+		return {
+			local: {
+				totalCount: logs[0].local.totalCount,
+				totalSize: logs[0].local.totalSize,
+				incCount: logs.reduce((a, b) => a + b.local.incCount, 0),
+				incSize: logs.reduce((a, b) => a + b.local.incSize, 0),
+				decCount: logs.reduce((a, b) => a + b.local.decCount, 0),
+				decSize: logs.reduce((a, b) => a + b.local.decSize, 0),
+			},
+			remote: {
+				totalCount: logs[0].remote.totalCount,
+				totalSize: logs[0].remote.totalSize,
+				incCount: logs.reduce((a, b) => a + b.remote.incCount, 0),
+				incSize: logs.reduce((a, b) => a + b.remote.incSize, 0),
+				decCount: logs.reduce((a, b) => a + b.remote.decCount, 0),
+				decSize: logs.reduce((a, b) => a + b.remote.decSize, 0),
+			},
+		};
+	}
+
+	@autobind
+	protected async fetchActual(): Promise<DeepPartial<DriveLog>> {
+		const [localCount, remoteCount, localSize, remoteSize] = await Promise.all([
+			DriveFiles.count({ userHost: null }),
+			DriveFiles.count({ userHost: Not(IsNull()) }),
+			DriveFiles.calcDriveUsageOfLocal(),
+			DriveFiles.calcDriveUsageOfRemote(),
+		]);
+
+		return {
+			local: {
+				totalCount: localCount,
+				totalSize: localSize,
+			},
+			remote: {
+				totalCount: remoteCount,
+				totalSize: remoteSize,
+			},
+		};
+	}
+
+	@autobind
+	public async update(file: DriveFile, isAdditional: boolean): Promise<void> {
+		const update: Obj = {};
+
+		update.totalCount = isAdditional ? 1 : -1;
+		update.totalSize = isAdditional ? file.size : -file.size;
+		if (isAdditional) {
+			update.incCount = 1;
+			update.incSize = file.size;
+		} else {
+			update.decCount = 1;
+			update.decSize = file.size;
+		}
+
+		await this.inc({
+			[file.userHost === null ? 'local' : 'remote']: update,
+		});
+	}
+}