Merge pull request 'aggiunti grafici e cambiato temperatura in voltaggio' (#1) from Iquadro/cluster-dashboard:main into main

Reviewed-on: #1

backend/database/database.go

@@ -13,9 +13,10 @@ type Database interface {
 	AllNodes() ([]*model.Node, error)
 	AllJobs() ([]*model.Job, error)
 
-	QueryTemperatureSamples(from, to time.Time) ([]model.Sample[float64], error)
+	QueryVoltageSamples(from, to time.Time) ([]model.Sample[float64], error)
 	QueryMemorySamples(from, to time.Time) ([]model.Sample[int64], error)
 	QueryStorageSamples(from, to time.Time) ([]model.Sample[int64], error)
+	QueryCPUSamples(from, to time.Time) ([]model.Sample[float64], error)
 	QueryNetworkUploadSamples(from, to time.Time) ([]model.Sample[int64], error)
 	QueryNetworkDownloadSamples(from, to time.Time) ([]model.Sample[int64], error)
 }

backend/database/mem.go

@@ -110,7 +110,7 @@ func (s *simpleDB) AllJobs() ([]*model.Job, error) {
 	}, nil
 }
 
-func (s *simpleDB) QueryTemperatureSamples(from, to time.Time) ([]model.Sample[float64], error) {
+func (s *simpleDB) QueryVoltageSamples(from, to time.Time) ([]model.Sample[float64], error) {
 	return generateFakeFloat64Samples(100), nil
 }
 
@@ -122,6 +122,10 @@ func (s *simpleDB) QueryStorageSamples(from, to time.Time) ([]model.Sample[int64
 	return generateFakeInt64Samples(100), nil
 }
 
+func (s *simpleDB) QueryCPUSamples(from, to time.Time) ([]model.Sample[float64], error) {
+	return generateFakeFloat64Samples(100), nil
+}
+
 func (s *simpleDB) QueryNetworkUploadSamples(from, to time.Time) ([]model.Sample[int64], error) {
 	return generateFakeInt64Samples(100), nil
 }

backend/routes/api.go

@@ -62,9 +62,9 @@ func (r *Service) Api(api fiber.Router) {
 		return c.JSON(jobs)
 	})
 
-	// QueryTemperatureSamples
-	api.Get("/stats/temperature", QueryTimeRangeMiddleware(func(c *fiber.Ctx, from, to time.Time) error {
-		samples, err := r.Database.QueryTemperatureSamples(from, to)
+	// QueryVoltageSamples
+	api.Get("/stats/voltage", QueryTimeRangeMiddleware(func(c *fiber.Ctx, from, to time.Time) error {
+		samples, err := r.Database.QueryVoltageSamples(from, to)
 		if err != nil {
 			return err
 		}
@@ -92,6 +92,16 @@ func (r *Service) Api(api fiber.Router) {
 		return c.JSON(samples)
 	}))
 
+	// QueryCPUSamples
+	api.Get("/stats/cpu", QueryTimeRangeMiddleware(func(c *fiber.Ctx, from, to time.Time) error {
+		samples, err := r.Database.QueryCPUSamples(from, to)
+		if err != nil {
+			return err
+		}
+
+		return c.JSON(samples)
+	}))
+
 	// QueryNetworkUploadSamples
 	api.Get("/stats/network-upload", QueryTimeRangeMiddleware(func(c *fiber.Ctx, from, to time.Time) error {
 		samples, err := r.Database.QueryNetworkUploadSamples(from, to)

frontend/src/components/GraphDouble.jsx

@@ -0,0 +1,27 @@
+import { useEffect, useState } from 'preact/hooks'
+import { server } from '../utils.js'
+import { PlotDouble } from './PlotDouble.jsx'
+
+export const GraphCardDouble = ({ label, url1, url2 }) => {
+    const [samples1, setSamples1] = useState([])
+    const [samples2, setSamples2] = useState([])
+
+    useEffect(() => {
+        if (url1) {
+            server.get(url1).then(data => setSamples1(data))
+        }
+    }, [])
+
+    useEffect(() => {
+        if (url2) {
+            server.get(url2).then(data => setSamples2(data))
+        }
+    }, [])
+
+    return (
+        <div class="card">
+            <div class="label">{label}</div>
+            <div class="graph">{url1 && url2 && <PlotDouble samples1={samples1} samples2={samples2} />}</div>
+        </div>
+    )
+}

frontend/src/components/PlotDouble.jsx

@@ -0,0 +1,102 @@
+import * as d3 from 'd3'
+import { useEffect, useRef } from 'preact/hooks'
+
+// set the dimensions and margins of the graph
+const margin = { top: 10, right: 10, bottom: 30, left: 30 }
+
+export const PlotDouble = ({ samples1, samples2 }) => {
+    if (samples1.length === 0 || samples2.length === 0) {
+        return <>Loading...</>
+    }
+
+    const data1 = samples1.map(({ timestamp, value }) => ({
+        timestamp: d3.isoParse(timestamp),
+        value: value,
+    }))
+
+    const data2 = samples2.map(({ timestamp, value }) => ({
+        timestamp: d3.isoParse(timestamp),
+        value: value,
+    }))
+
+    const plotRef = useRef(null)
+
+    useEffect(() => {
+        if (plotRef.current) {
+            const el = plotRef.current
+
+            const width = el.offsetWidth - margin.left - margin.right
+            const height = el.offsetHeight - margin.top - margin.bottom
+
+            const svg = d3
+                .select(el)
+                .append('svg')
+                .attr('width', el.offsetWidth)
+                .attr('height', el.offsetHeight)
+                .append('g')
+                .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')
+
+            const x = d3
+                .scaleTime()
+                .domain(
+                    d3.extent([...data1, ...data2], function (d) {
+                        return d.timestamp
+                    })
+                )
+                .range([0, width])
+
+            const y = d3
+                .scaleLinear()
+                .domain([
+                    0,
+                    d3.max([...data1, ...data2], function (d) {
+                        return +d.value
+                    }),
+                ])
+                .range([height, 0])
+
+            svg.append('g')
+                .attr('transform', 'translate(0,' + height + ')')
+                .call(d3.axisBottom(x))
+
+            svg.append('g').call(d3.axisLeft(y))
+
+            const line1 = svg.append('g')
+            const line2 = svg.append('g')
+
+            line1.append('path')
+                .datum(data1)
+                .attr('fill', 'none')
+                .attr('stroke', 'steelblue')
+                .attr('stroke-width', 2)
+                .attr(
+                    'd',
+                    d3
+                        .line()
+                        .x(d => x(d.timestamp))
+                        .y(d => y(d.value))
+                )
+                
+            line2.append('path')
+                .datum(data2)
+                .attr('fill', 'none')
+                .attr('stroke', 'darkgreen')
+                .attr('stroke-width', 2)
+                .attr(
+                    'd',
+                    d3
+                        .line()
+                        .x(d => x(d.timestamp))
+                        .y(d => y(d.value))
+                )
+        }
+
+        return () => {
+            if (plotRef.current) {
+                plotRef.current.firstChild.remove()
+            }
+        }
+    }, [plotRef])
+
+    return <div class="d3-plot" ref={plotRef}></div>
+}

frontend/src/pages.jsx

@@ -1,4 +1,5 @@
 import { GraphCard } from './components/Graph.jsx'
+import { GraphCardDouble } from './components/GraphDouble.jsx'
 
 const LOGO = String.raw`
 _______________________ _______ _______ _______ _
@@ -85,11 +86,11 @@ export const DashboardPage = ({}) => {
             </div>
             <div class="main">
                 <GraphCard label="Uptime" />
-                <GraphCard label="CPU" />
-                <GraphCard label="Storage" />
-                <GraphCard label="Memory" />
-                <GraphCard label="Network" />
-                <GraphCard label="Temperature" url="/api/stats/temperature" />
+                <GraphCard label="CPU" url="/api/stats/cpu"/>
+                <GraphCard label="Storage" url="/api/stats/storage"/>
+                <GraphCard label="Memory" url="/api/stats/memory"/>
+                <GraphCardDouble label="Network" url1="/api/stats/network-upload" url2="/api/stats/network-download"/>
+                <GraphCard label="Voltage" url="/api/stats/voltage" />
             </div>
         </>
     )