Rate limit (#5169)

* set upload/download rate limit by user role

* admin set user upload/download rate limit

* update

Co-authored-by: lian <lian@seafile.com>

frontend/src/components/dialog/sysadmin-dialog/set-upload-download-rate-limit.js

@@ -0,0 +1,86 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { Alert, Modal, ModalHeader, ModalBody, ModalFooter, Button, Form, FormGroup, Input, InputGroup, InputGroupAddon, InputGroupText } from 'reactstrap';
+import { gettext } from '../../../utils/constants';
+import { Utils } from '../../../utils/utils';
+
+const propTypes = {
+  uploadOrDownload: PropTypes.string.isRequired,
+  toggle: PropTypes.func.isRequired,
+  updateUploadDownloadRateLimit: PropTypes.func.isRequired
+};
+
+class SysAdminSetUploadDownloadRateLimitDialog extends React.Component {
+
+  constructor(props) {
+    super(props);
+    this.state = {
+      rateLimit: '',
+      isSubmitBtnActive: false
+    };
+  }
+
+  toggle = () => {
+    this.props.toggle();
+  }
+
+  handleRateLimitChange = (e) => {
+    const value = e.target.value;
+    this.setState({
+      rateLimit: value,
+      isSubmitBtnActive: value.trim() != ''
+    });
+  }
+
+  handleKeyPress = (e) => {
+    if (e.key == 'Enter') {
+      this.handleSubmit();
+      e.preventDefault();
+    }
+  }
+
+  handleSubmit = () => {
+    this.props.updateUploadDownloadRateLimit(this.props.uploadOrDownload, this.state.rateLimit.trim());
+    this.toggle();
+  }
+
+  render() {
+    const { rateLimit, isSubmitBtnActive } = this.state;
+    return (
+      <Modal isOpen={true} toggle={this.toggle}>
+        <ModalHeader toggle={this.toggle}>{this.props.uploadOrDownload == "upload" ? gettext('Set Upload Rate Limit') : gettext('Set Download Rate Limit')}</ModalHeader>
+        <ModalBody>
+          <Form>
+            <FormGroup>
+              <InputGroup>
+                <Input
+                  type="text"
+                  className="form-control"
+                  value={rateLimit}
+                  onKeyPress={this.handleKeyPress}
+                  onChange={this.handleRateLimitChange}
+                />
+                <InputGroupAddon addonType="append">
+                  <InputGroupText>kB/s</InputGroupText>
+                </InputGroupAddon>
+              </InputGroup>
+              <p className="small text-secondary mt-2 mb-2">
+                {gettext('An integer that is greater than or equal to 0.')}
+                <br />
+                {gettext('Tip: 0 means default limit')}
+              </p>
+            </FormGroup>
+          </Form>
+        </ModalBody>
+        <ModalFooter>
+          <Button color="secondary" onClick={this.toggle}>{gettext('Cancel')}</Button>
+          <Button color="primary" onClick={this.handleSubmit} disabled={!isSubmitBtnActive}>{gettext('Submit')}</Button>
+        </ModalFooter>
+      </Modal>
+    );
+  }
+}
+
+SysAdminSetUploadDownloadRateLimitDialog.propTypes = propTypes;
+
+export default SysAdminSetUploadDownloadRateLimitDialog;