report wwritten rows

packages/tools/src/rowProgressReporter.ts

@@ -0,0 +1,45 @@
+export class RowProgressReporter {
+  counter = 0;
+  timeoutHandle = null;
+
+  constructor(public progressName, public field = 'writtenRowCount') {}
+
+  add(count: number) {
+    this.counter += count;
+    if (!this.progressName) {
+      return;
+    }
+
+    if (this.timeoutHandle) {
+      return;
+    }
+    this.timeoutHandle = setTimeout(() => {
+      this.timeoutHandle = null;
+      this.send();
+    }, 1000);
+  }
+
+  finish() {
+    if (!this.progressName) {
+      return;
+    }
+
+    if (this.timeoutHandle) {
+      clearTimeout(this.timeoutHandle);
+      this.timeoutHandle = null;
+    }
+    this.send();
+  }
+
+  send() {
+    if (!this.progressName) {
+      return;
+    }
+
+    process.send({
+      msgtype: 'progress',
+      progressName: this.progressName,
+      [this.field]: this.counter,
+    });
+  }
+}