Adding chart generation for host stats

go.mod

@@ -7,3 +7,9 @@ require (
 	github.com/go-chi/chi/v5 v5.0.12
 	libvirt.org/go/libvirt v1.10001.0
 )
+
+require (
+	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
+	github.com/wcharczuk/go-chart/v2 v2.1.1 // indirect
+	golang.org/x/image v0.11.0 // indirect
+)

go.sum

@@ -2,7 +2,44 @@ github.com/a-h/templ v0.2.598 h1:6jMIHv6wQZvdPxTuv87erW4RqN/FPU0wk7ZHN5wVuuo=
 github.com/a-h/templ v0.2.598/go.mod h1:SA7mtYwVEajbIXFRh3vKdYm/4FYyLQAtPH1+KxzGPA8=
 github.com/go-chi/chi/v5 v5.0.12 h1:9euLV5sTrTNTRUU9POmDUvfxyj6LAABLUcEWO+JJb4s=
 github.com/go-chi/chi/v5 v5.0.12/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
+github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
+github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/wcharczuk/go-chart/v2 v2.1.1 h1:2u7na789qiD5WzccZsFz4MJWOJP72G+2kUuJoSNqWnE=
+github.com/wcharczuk/go-chart/v2 v2.1.1/go.mod h1:CyCAUt2oqvfhCl6Q5ZvAZwItgpQKZOkCJGb+VGv6l14=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/image v0.11.0 h1:ds2RoQvBvYTiJkwpSFDwCcDFNX7DqjL2WsUgTNk0Ooo=
+golang.org/x/image v0.11.0/go.mod h1:bglhjqbqVuEb9e9+eNR45Jfu7D+T4Qan+NhQk8Ck2P8=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.12.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 libvirt.org/go/libvirt v1.10001.0 h1:lEVDNE7xfzmZXiDEGIS8NvJSuaz11OjRXw+ufbQEtPY=
 libvirt.org/go/libvirt v1.10001.0/go.mod h1:1WiFE8EjZfq+FCVog+rvr1yatKbKZ9FaFMZgEqxEJqQ=

lib/host/charts.go

@@ -0,0 +1,25 @@
+package host
+
+import (
+	"strings"
+
+	"github.com/wcharczuk/go-chart/v2"
+)
+
+// This file contains utilities to create charts based on the different data
+// When a chart is rendered, it can return either an SVG or PNG. SVG is preferrable.
+
+func (h *Host) ChartMemory() string {
+	c := chart.PieChart{
+		Width:  256,
+		Height: 256,
+		Values: []chart.Value{
+			{Value: float64(h.NodeMemory.Free / h.NodeMemory.Total), Label: "Free"},
+			{Value: float64(h.NodeMemory.Cached / h.NodeMemory.Total), Label: "Cached"},
+			{Value: float64(h.NodeMemory.Buffers / h.NodeMemory.Total), Label: "Buffers"},
+		},
+	}
+	sb := new(strings.Builder)
+	c.Render(chart.SVG, sb)
+	return sb.String()
+}

main.go

@@ -4,6 +4,7 @@ import (
 	"log"
 	"net/http"
 
+	"git.staur.ca/stobbsm/clustvirt/lib/host"
 	"git.staur.ca/stobbsm/clustvirt/view/components"
 	"git.staur.ca/stobbsm/clustvirt/view/layouts"
 	"git.staur.ca/stobbsm/clustvirt/view/static"
@@ -17,11 +18,12 @@ const DEBUG bool = true
 func main() {
 	log.Println("Starting clustvirt, the libvirt cluster manager")
 
-	//venus, err := host.ConnectHost(host.URI_QEMU_SSH_SYSTEM, "venus.staur.ca")
+	venus, err := host.ConnectHost(host.URI_QEMU_SSH_SYSTEM, "venus.staur.ca")
-	//if err != nil {
+	if err != nil {
-	//	log.Fatal(err)
+		log.Fatal(err)
-	//}
+	}
-	//defer venus.Close()
+	log.Println("Connected to host `venus.staur.ca`")
+	defer venus.Close()
 	//lm, err := venus.GetGuestByName("logan-minecraft")
 	//if err != nil {
 	//	log.Fatal(err)
@@ -38,17 +40,16 @@ func main() {
 
 	r := chi.NewRouter()
 	r.Use(middleware.Logger)
+	if DEBUG {
+		r.Use(middleware.NoCache)
+	}
 	r.Get("/static/*", func(w http.ResponseWriter, r *http.Request) {
 		defer r.Body.Close()
-		if DEBUG {
-			w.Header().Add("Cache-Control", "no-cache, no-store, must-revalidate")
-			w.Header().Add("Pragma", "no-cache")
-			w.Header().Add("Expire", "0")
-		}
 		fs.ServeHTTP(w, r)
 	})
 	r.Get("/", templ.Handler(layouts.Manager("Cluster Manager", "ClustVirt", defaultNavBar)).ServeHTTP)
 	r.Get("/about", templ.Handler(static.Home()).ServeHTTP)
+	r.Get("/chart", templ.Handler(components.HostInfo(venus)).ServeHTTP)
 
 	log.Println(http.ListenAndServe(":3000", r))
 }

public/chart.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="256" height="256">\n<path d="M 0 0 L 256 0 L 256 256 L 0 256 L 0 0" style="stroke-width:0;stroke:rgba(255,255,255,1.0);fill:rgba(255,255,255,1.0)"/><path d="M 5 5 L 251 5 L 251 251 L 5 251 L 5 5" style="stroke-width:0;stroke:rgba(255,255,255,1.0);fill:rgba(255,255,255,1.0)"/><circle cx="128" cy="128" r="123" style="stroke-width:5;stroke:rgba(255,255,255,1.0);fill:rgba(106,195,203,1.0)"/><text x="33" y="134" style="stroke-width:0;stroke:none;fill:rgba(51,51,51,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif">Free</text></svg>

public/css/style.css

@@ -822,45 +822,12 @@ span>a:visited {
   position: static;
 }
 
-.order-3 {
-  order: 3;
-}
-
 .order-2 {
   order: 2;
 }
 
-.float-left {
+.order-3 {
-  float: left;
+  order: 3;
-}
-
-.m-5 {
-  margin: 1.25rem;
-}
-
-.mx-5 {
-  margin-left: 1.25rem;
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 }
 
 .mx-4 {
@@ -868,7 +835,8 @@ span>a:visited {
   margin-right: 1rem;
 }
 
-.mr-auto {
+.mx-auto {
+  margin-left: auto;
   margin-right: auto;
 }
 
@@ -876,250 +844,38 @@ span>a:visited {
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 }
 
-.inline-block {
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 }
 
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   display: contents;
 }
 
-.hidden {
+.h-28 {
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+  height: 7rem;
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-  width: -moz-fit-content;
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-  width: -moz-max-content;
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 }
 
 .flex-auto {
   flex: 1 1 auto;
 }
 
-.flex-grow {
-  flex-grow: 1;
-}
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-  flex-grow: 1;
-}
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 .basis-1\/2 {
   flex-basis: 50%;
 }
 
-.basis-1\/3 {
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 .basis-1\/4 {
   flex-basis: 25%;
 }
 
-.basis-2\/3 {
-  flex-basis: 66.666667%;
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 .list-inside {
   list-style-position: inside;
 }
@@ -1140,10 +896,6 @@ span>a:visited {
   list-style-image: url("/static/icons/list-possible.svg");
 }
 
-.flex-row {
-  flex-direction: row;
-}
-
 .flex-col {
   flex-direction: column;
 }
@@ -1160,18 +912,10 @@ span>a:visited {
   align-items: center;
 }
 
-.justify-center {
-  justify-content: center;
-}
-
 .justify-between {
   justify-content: space-between;
 }
 
-.justify-around {
-  justify-content: space-around;
-}
-
 .gap-2 {
   gap: 0.5rem;
 }
@@ -1180,11 +924,6 @@ span>a:visited {
   gap: 1rem;
 }
 
-.gap-x-2 {
-  -moz-column-gap: 0.5rem;
-       column-gap: 0.5rem;
-}
-
 .divide-solid > :not([hidden]) ~ :not([hidden]) {
   border-style: solid;
 }
@@ -9199,22 +8938,6 @@ span>a:visited {
   border-color: rgb(51 51 30 / 0.95);
 }
 
-.self-start {
-  align-self: flex-start;
-}
-
-.self-center {
-  align-self: center;
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-.justify-self-end {
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 .rounded {
   border-radius: 0.25rem;
 }
@@ -93288,11 +93011,6 @@ span>a:visited {
   background-color: rgb(51 51 30 / 0.95);
 }
 
-.bg-red-500 {
-  --tw-bg-opacity: 1;
-  background-color: rgb(239 68 68 / var(--tw-bg-opacity));
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-
 .from-uiblue-100 {
   --tw-gradient-from: #dde7f8 var(--tw-gradient-from-position);
   --tw-gradient-to: rgb(221 231 248 / 0) var(--tw-gradient-to-position);
@@ -138837,28 +138555,14 @@ span>a:visited {
   padding: 0.5rem;
 }
 
-.px-8 {
-  padding-left: 2rem;
-  padding-right: 2rem;
-}
-
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-  padding-top: 2rem;
-  padding-bottom: 2rem;
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-  vertical-align: bottom;
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-
 .text-2xl {
   font-size: 1.5rem;
   line-height: 2rem;
 }
 
-.text-sm {
+.text-lg {
-  font-size: 0.875rem;
+  font-size: 1.125rem;
-  line-height: 1.25rem;
+  line-height: 1.75rem;
 }
 
 .text-xl {
@@ -138866,21 +138570,6 @@ span>a:visited {
   line-height: 1.75rem;
 }
 
-.text-3xl {
-  font-size: 1.875rem;
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@@ -138889,10 +138578,6 @@ span>a:visited {
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 }
 
-.font-thin {
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-
 .italic {
   font-style: italic;
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@@ -220454,28 +220139,20 @@ span>a:visited {
 }
 
 @media (min-width: 640px) {
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-    justify-content: flex-start;
-  }
-
   .sm\:gap-8 {
     gap: 2rem;
   }
 }
 
 @media (min-width: 768px) {
+  .md\:order-1 {
+    order: 1;
+  }
+
   .md\:order-2 {
     order: 2;
   }
@@ -220484,34 +220161,10 @@ span>a:visited {
     order: 3;
   }
 
-  .md\:order-1 {
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-  }
-
-  .md\:block {
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-
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-
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-  .md\:w-10\/12 {
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-
   .md\:w-auto {
     width: auto;
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@@ -220538,29 +220191,3 @@ span>a:visited {
     padding-bottom: 0.5rem;
   }
 }
-
-@media (min-width: 1024px) {
-  .lg\:h-8 {
-    height: 2rem;
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-
-  .lg\:flex-row {
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-  }
-
-  .lg\:items-end {
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-  }
-
-  .lg\:items-baseline {
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-
-  .lg\:justify-start {
-    justify-content: flex-start;
-  }
-
-  .lg\:justify-center {
-    justify-content: center;
-  }
-}

view/components/hostinfo.templ

@@ -0,0 +1,12 @@
+package components
+
+import (
+	"git.staur.ca/stobbsm/clustvirt/lib/host"
+)
+
+// HostInfo is meant to be an HTMX response
+templ HostInfo(h *host.Host) {
+	<body>
+		@templ.Raw(h.ChartMemory())
+	</body>
+}

view/components/hostinfo_templ.go

@@ -0,0 +1,48 @@
+// Code generated by templ - DO NOT EDIT.
+
+// templ: version: v0.2.598
+package components
+
+//lint:file-ignore SA4006 This context is only used if a nested component is present.
+
+import "github.com/a-h/templ"
+import "context"
+import "io"
+import "bytes"
+
+import (
+	"git.staur.ca/stobbsm/clustvirt/lib/host"
+)
+
+// HostInfo is meant to be an HTMX response
+func HostInfo(h *host.Host) templ.Component {
+	return templ.ComponentFunc(func(ctx context.Context, templ_7745c5c3_W io.Writer) (templ_7745c5c3_Err error) {
+		templ_7745c5c3_Buffer, templ_7745c5c3_IsBuffer := templ_7745c5c3_W.(*bytes.Buffer)
+		if !templ_7745c5c3_IsBuffer {
+			templ_7745c5c3_Buffer = templ.GetBuffer()
+			defer templ.ReleaseBuffer(templ_7745c5c3_Buffer)
+		}
+		ctx = templ.InitializeContext(ctx)
+		templ_7745c5c3_Var1 := templ.GetChildren(ctx)
+		if templ_7745c5c3_Var1 == nil {
+			templ_7745c5c3_Var1 = templ.NopComponent
+		}
+		ctx = templ.ClearChildren(ctx)
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString("<body>")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = templ.Raw(h.ChartMemory()).Render(ctx, templ_7745c5c3_Buffer)
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString("</body>")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		if !templ_7745c5c3_IsBuffer {
+			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteTo(templ_7745c5c3_W)
+		}
+		return templ_7745c5c3_Err
+	})
+}