diff --git a/.forgejo/workflows/functions.yml b/.forgejo/workflows/functions.yml new file mode 100644 index 0000000..28daf3b --- /dev/null +++ b/.forgejo/workflows/functions.yml @@ -0,0 +1,32 @@ +name: functions + +on: + - push + +jobs: + build: + runs-on: ubuntu-latest + steps: + - name: Setup `spin` + uses: fermyon/actions/spin/setup@v1 + + - name: Checkout + uses: actions/checkout@v4 + + - name: Build + run: | + spin registry push --build code.icb4dc0.de/infrastructure/functions/comics + working-directory: comics + + - name: Deploy + uses: clowdhaus/argo-cd-action@v2 + with: + command: app create functions + options: -f deploy/argo-app.yaml --upsert --server argo-cd-argocd-server.argo-system.svc --auth-token ${{ secrets.ARGOCD_TOKEN }} --plaintext + version: "2.13.3" + + - name: Deploy + uses: clowdhaus/argo-cd-action@v2 + with: + command: app sync functions + options: --assumeYes --server argo-cd-argocd-server.argo-system.svc --auth-token ${{ secrets.ARGOCD_TOKEN }} --plaintext diff --git a/comics/.gitignore b/comics/.gitignore new file mode 100644 index 0000000..b565010 --- /dev/null +++ b/comics/.gitignore @@ -0,0 +1,2 @@ +main.wasm +.spin/ diff --git a/comics/go.mod b/comics/go.mod new file mode 100644 index 0000000..f43c766 --- /dev/null +++ b/comics/go.mod @@ -0,0 +1,12 @@ +module github.com/monkeyuser + +go 1.23 + +require github.com/fermyon/spin/sdk/go/v2 v2.2.0 + +require ( + github.com/PuerkitoBio/goquery v1.10.1 // indirect + github.com/andybalholm/cascadia v1.3.3 // indirect + github.com/julienschmidt/httprouter v1.3.0 // indirect + golang.org/x/net v0.33.0 // indirect +) diff --git a/comics/go.sum b/comics/go.sum new file mode 100644 index 0000000..4410efb --- /dev/null +++ b/comics/go.sum @@ -0,0 +1,74 @@ +github.com/PuerkitoBio/goquery v1.10.1 h1:Y8JGYUkXWTGRB6Ars3+j3kN0xg1YqqlwvdTV8WTFQcU= +github.com/PuerkitoBio/goquery v1.10.1/go.mod h1:IYiHrOMps66ag56LEH7QYDDupKXyo5A8qrjIx3ZtujY= +github.com/andybalholm/cascadia v1.3.3 h1:AG2YHrzJIm4BZ19iwJ/DAua6Btl3IwJX+VI4kktS1LM= +github.com/andybalholm/cascadia v1.3.3/go.mod h1:xNd9bqTn98Ln4DwST8/nG+H0yuB8Hmgu1YHNnWw0GeA= +github.com/fermyon/spin/sdk/go/v2 v2.2.0 h1:zHZdIqjbUwyxiwdygHItnM+vUUNSZ3CX43jbIUemBI4= +github.com/fermyon/spin/sdk/go/v2 v2.2.0/go.mod h1:kfJ+gdf/xIaKrsC6JHCUDYMv2Bzib1ohFIYUzvP+SCw= +github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= +github.com/julienschmidt/httprouter v1.3.0 h1:U0609e9tgbseu3rBINet9P48AI/D3oJs4dN7jwJOQ1U= +github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8IZAc4RVcycCCAKdM= +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/crypto v0.13.0/go.mod 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+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/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58= +golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk= +golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= diff --git a/comics/main.go b/comics/main.go new file mode 100644 index 0000000..b0a61a3 --- /dev/null +++ b/comics/main.go @@ -0,0 +1,102 @@ +package main + +import ( + "encoding/json" + "fmt" + "log/slog" + "math/rand/v2" + "net/http" + + "github.com/PuerkitoBio/goquery" + spinhttp "github.com/fermyon/spin/sdk/go/v2/http" + "github.com/julienschmidt/httprouter" +) + +const ( + contentTypeHeader = "Content-Type" +) + +type MonkeyUserEntry struct { + Title string `json:"title"` + URL string `json:"url"` +} + +type ImageReference struct { + URL string `json:"url"` +} + +func init() { + router := spinhttp.NewRouter() + + router.GET("/monkeyuser", monkeyUserComic) + + spinhttp.Handle(router.ServeHTTP) +} + +func monkeyUserComic(w http.ResponseWriter, re *http.Request, _ httprouter.Params) { + indexResponse, err := spinhttp.Get("https://www.monkeyuser.com/index.json") + if err != nil { + slog.Error("failed to fetch MonkeyUser index", slog.String("err", err.Error())) + http.Error(w, err.Error(), http.StatusInternalServerError) + return + } + + slog.Info("Fetched MonkeyUser index") + defer indexResponse.Body.Close() + if indexResponse.StatusCode != http.StatusOK { + w.WriteHeader(indexResponse.StatusCode) + return + } + + var entries []MonkeyUserEntry + + if err := json.NewDecoder(indexResponse.Body).Decode(&entries); err != nil { + slog.Error("failed to decode MonkeyUser index", slog.String("err", err.Error())) + http.Error(w, err.Error(), http.StatusInternalServerError) + return + } + + slog.Info("Decoded MonkeyUser index") + entry := entries[rand.IntN(len(entries))] + + pageResponse, err := spinhttp.Get(fmt.Sprintf("https://www.monkeyuser.com%s", entry.URL)) + if err != nil { + slog.Error("failed to fetch monkeyuser comic page", slog.String("err", err.Error())) + http.Error(w, err.Error(), http.StatusInternalServerError) + return + } + + defer pageResponse.Body.Close() + if pageResponse.StatusCode != http.StatusOK { + w.WriteHeader(pageResponse.StatusCode) + return + } + + comicDoc, err := goquery.NewDocumentFromReader(pageResponse.Body) + if err != nil { + slog.Error("failed to parse comic page", slog.String("err", err.Error())) + http.Error(w, err.Error(), http.StatusInternalServerError) + return + } + + var ref ImageReference + + comicDoc.Find("div.content > p > img").Each(func(_ int, s *goquery.Selection) { + for _, node := range s.Nodes { + for _, attr := range node.Attr { + if attr.Key == "src" { + ref.URL = fmt.Sprintf("https://www.monkeyuser.com%s", attr.Val) + break + } + } + slog.Info("found URL", slog.String("url", ref.URL)) + } + }) + + w.Header().Add(contentTypeHeader, "application/json") + w.WriteHeader(http.StatusOK) + if err := json.NewEncoder(w).Encode(ref); err != nil { + slog.Error("failed to encode image ref", slog.String("err", err.Error())) + http.Error(w, err.Error(), http.StatusInternalServerError) + } +} diff --git a/comics/spin.toml b/comics/spin.toml new file mode 100644 index 0000000..f867fc1 --- /dev/null +++ b/comics/spin.toml @@ -0,0 +1,18 @@ +spin_manifest_version = 2 + +[application] +name = "comics" +version = "0.1.0" +authors = ["Peter Kurfer "] +description = "" + +[[trigger.http]] +route = "/..." +component = "comics" + +[component.comics] +source = "main.wasm" +allowed_outbound_hosts = [ "https://www.monkeyuser.com" ] +[component.comics.build] +command = "tinygo build -target=wasip1 -gc=leaking -no-debug -scheduler=none -buildmode=c-shared -o main.wasm main.go" +watch = ["**/*.go", "go.mod"] diff --git a/deploy/apps/comics.yaml b/deploy/apps/comics.yaml new file mode 100644 index 0000000..ee7df8c --- /dev/null +++ b/deploy/apps/comics.yaml @@ -0,0 +1,8 @@ +apiVersion: core.spinkube.dev/v1alpha1 +kind: SpinApp +metadata: + name: comics +spec: + image: "code.icb4dc0.de/infrastructure/functions/comics:latest" + executor: containerd-shim-spin + replicas: 2 diff --git a/deploy/argo-app.yaml b/deploy/argo-app.yaml new file mode 100644 index 0000000..8dbc08e --- /dev/null +++ b/deploy/argo-app.yaml @@ -0,0 +1,15 @@ +apiVersion: argoproj.io/v1alpha1 +kind: Application +metadata: + name: functions +spec: + destination: + name: "" + namespace: functions + server: https://kubernetes.default.svc + source: + path: "deploy" + repoURL: https://code.icb4dc0.de/infrastructure/functions.git + targetRevision: HEAD + sources: [] + project: default diff --git a/deploy/kustomization.yaml b/deploy/kustomization.yaml new file mode 100644 index 0000000..f6e6a29 --- /dev/null +++ b/deploy/kustomization.yaml @@ -0,0 +1,9 @@ +apiVersion: kustomize.config.k8s.io/v1beta1 +kind: Kustomization + +namespace: functions + +resources: + - resources/namespace.yam + - resources/executor.yaml + - apps/comics.yaml diff --git a/deploy/resources/executor.yaml b/deploy/resources/executor.yaml new file mode 100644 index 0000000..e43fbda --- /dev/null +++ b/deploy/resources/executor.yaml @@ -0,0 +1,9 @@ +apiVersion: core.spinkube.dev/v1alpha1 +kind: SpinAppExecutor +metadata: + name: containerd-shim-spin +spec: + createDeployment: true + deploymentConfig: + runtimeClassName: wasmtime-spin-v2 + installDefaultCACerts: true diff --git a/deploy/resources/namespace.yaml b/deploy/resources/namespace.yaml new file mode 100644 index 0000000..83b7fc2 --- /dev/null +++ b/deploy/resources/namespace.yaml @@ -0,0 +1,5 @@ +--- +apiVersion: v1 +kind: Namespace +metadata: + name: functions