From 6a50a6fd5a1fa9c4c97fd95f615d9cda05806898 Mon Sep 17 00:00:00 2001
From: Manfred Dreese <com@dreese.de>
Date: Mon, 24 Sep 2018 11:20:03 +0200
Subject: [PATCH] Added Dashboard table item for Rate Limits

---
 webui/src/app/app.module.ts                   |  2 +
 .../providers/providers.component.html        | 35 ++++++++++++++
 .../pipes/humanreadable.filter.pipe.spec.ts   | 46 +++++++++++++++++++
 .../app/pipes/humanreadable.filter.pipe.ts    | 27 +++++++++++
 webui/src/app/services/api.service.ts         |  3 ++
 5 files changed, 113 insertions(+)
 create mode 100644 webui/src/app/pipes/humanreadable.filter.pipe.spec.ts
 create mode 100644 webui/src/app/pipes/humanreadable.filter.pipe.ts

diff --git a/webui/src/app/app.module.ts b/webui/src/app/app.module.ts
index c9ba2741a..c9f573855 100644
--- a/webui/src/app/app.module.ts
+++ b/webui/src/app/app.module.ts
@@ -13,6 +13,7 @@ import { ProvidersComponent } from './components/providers/providers.component';
 import { LetDirective } from './directives/let.directive';
 import { BackendFilterPipe } from './pipes/backend.filter.pipe';
 import { FrontendFilterPipe } from './pipes/frontend.filter.pipe';
+import { HumanReadableFilterPipe } from './pipes/humanreadable.filter.pipe';
 import { KeysPipe } from './pipes/keys.pipe';
 import { ApiService } from './services/api.service';
 import { WindowService } from './services/window.service';
@@ -28,6 +29,7 @@ import { WindowService } from './services/window.service';
     KeysPipe,
     FrontendFilterPipe,
     BackendFilterPipe,
+    HumanReadableFilterPipe,
     LetDirective
   ],
   imports: [
diff --git a/webui/src/app/components/providers/providers.component.html b/webui/src/app/components/providers/providers.component.html
index bcf9df5e5..72fa96973 100644
--- a/webui/src/app/components/providers/providers.component.html
+++ b/webui/src/app/components/providers/providers.component.html
@@ -435,6 +435,41 @@
                       </div>
                     </div>
 
+                    <!-- details.ratelimit-->
+                    <div *ngIf="p.ratelimit">
+                      <hr>
+                      <div class="section-line">
+                        <div class="columns">
+                          <div class="column is-3">
+                            <h2 class="section-line-header">Rate Limiting</h2>
+                          </div>
+                          <div class="column is-9">
+                            <div class="control">
+                              <div class="tags has-addons">
+                                <span class="tag is-light">Extractor Function</span>
+                                <span class="tag is-info">{{ p.ratelimit.extractorFunc }}</span>
+                              </div>
+                            </div>
+                            <table class="table is-fullwidth is-hoverable table-fixed">
+                              <thead>
+                                <td>Rateset</td>
+                                <td>Period</td>
+                                <td>Average</td>
+                                <td>Burst</td>
+                              </thead>
+                              <tbody>
+                                <tr *ngFor="let rateset of p.ratelimit.rateset">
+                                  <td>{{rateset.id}}</td>
+                                  <td>{{rateset.period | humanreadable}}</td>
+                                  <td>{{rateset.average}}</td>
+                                  <td>{{rateset.burst}}</td>
+                                </tr>
+                              </tbody>
+                            </table>
+                          </div>
+                        </div>
+                      </div>
+                    </div>
                   </div>
 
                 </div>
diff --git a/webui/src/app/pipes/humanreadable.filter.pipe.spec.ts b/webui/src/app/pipes/humanreadable.filter.pipe.spec.ts
new file mode 100644
index 000000000..4cdaa6f4a
--- /dev/null
+++ b/webui/src/app/pipes/humanreadable.filter.pipe.spec.ts
@@ -0,0 +1,46 @@
+import { HumanReadableFilterPipe } from './humanreadable.filter.pipe';
+
+describe('HumanReadableFilterPipe', () => {
+    const pipe = new HumanReadableFilterPipe();
+
+    const datatable = [{
+        'given': '180000000000',
+        'expected': '180s'
+    },
+    {
+        'given': '4096.0',
+        'expected': '4096ns'
+    },
+    {
+        'given': '7200000000000',
+        'expected': '120m'
+    },
+    {
+        'given': '1337',
+        'expected': '1337ns'
+    },
+    {
+        'given': 'traefik',
+        'expected': 'traefik',
+    },
+    {
+        'given': '-23',
+        'expected': '-23',
+    },
+    {
+        'given': '0',
+        'expected': '0',
+    },
+    ];
+
+    datatable.forEach(item => {
+        it((item.given + ' should be transformed to ' + item.expected ), () => {
+            expect(pipe.transform(item.given)).toEqual(item.expected);
+        });
+    });
+
+    it('create an instance', () => {
+        expect(pipe).toBeTruthy();
+    });
+
+});
diff --git a/webui/src/app/pipes/humanreadable.filter.pipe.ts b/webui/src/app/pipes/humanreadable.filter.pipe.ts
new file mode 100644
index 000000000..d0f5e8736
--- /dev/null
+++ b/webui/src/app/pipes/humanreadable.filter.pipe.ts
@@ -0,0 +1,27 @@
+import { Pipe, PipeTransform } from '@angular/core';
+
+/**
+ * HumanReadableFilterPipe converts a time period in nanoseconds to a human-readable
+ * string.
+ */
+@Pipe({name: 'humanreadable'})
+export class HumanReadableFilterPipe implements PipeTransform {
+  transform(value): any {
+    let result = '';
+    const powerOf10 = Math.floor(Math.log10(value));
+
+    if (powerOf10 > 11) {
+      result = value / (60 * Math.pow(10, 9)) + 'm';
+    } else if (powerOf10 > 9) {
+      result = value / Math.pow(10, 9) + 's';
+    } else if (powerOf10 > 6) {
+      result = value / Math.pow(10, 6) + 'ms';
+    } else if (value > 0) {
+      result = Math.floor(value) + 'ns';
+    } else {
+      result = value;
+    }
+
+    return result;
+  }
+}
diff --git a/webui/src/app/services/api.service.ts b/webui/src/app/services/api.service.ts
index ae87b4ff8..d4b02289e 100644
--- a/webui/src/app/services/api.service.ts
+++ b/webui/src/app/services/api.service.ts
@@ -67,6 +67,9 @@ export class ApiService {
               frontend.headers.customResponseHeaders = this.toHeaderArray(frontend.headers.customResponseHeaders);
               frontend.headers.sslProxyHeaders = this.toHeaderArray(frontend.headers.sslProxyHeaders);
             }
+            if (frontend.ratelimit && frontend.ratelimit.rateset) {
+              frontend.ratelimit.rateset = this.toArray(frontend.ratelimit.rateset, 'id');
+            }
             return frontend;
           });