Merge branch 'master' into master

applications/knative/function/figlet/README.md

@@ -0,0 +1,33 @@
+# Go HTTP Function
+
+Welcome to your new Go Function! The boilerplate function code can be found in
+[`handle.go`](handle.go). This Function responds to HTTP requests.
+
+The function returns:
+- OK in ASCII art on a GET request
+```
+curl x.x.x.x:80 -H "Host: figlet.knative-figlet.example.com"
+   ___   .  _  __
+  / _ \  . | |/ /
+ | (_) | . | ' <
+  \___/  . |_|\_\
+         .
+```
+- value of the `text` key in ASCII art  on a POST request
+```
+curl x.x.x.x:80 -H "Host: figlet.knative-figlet.example.com" -H "Content-Type: application/json" -d '{"text":"test"}'
+  _____  .  ___  .  ___  .  _____
+ |_   _| . | __| . / __| . |_   _|
+   | |   . | _|  . \__ \ .   | |
+   |_|   . |___| . |___/ .   |_|
+         .       .       .
+```
+
+## Development
+
+Develop new features by adding a test to [`handle_test.go`](handle_test.go) for
+each feature, and confirm it works with `go test`.
+
+Update the running analog of the function using the `func` CLI.
+
+For more, see [the complete documentation]('https://github.com/knative-sandbox/kn-plugin-func/tree/main/docs')

applications/knative/function/figlet/func.yaml

@@ -0,0 +1,19 @@
+name: figlet
+namespace: knative-figlet
+runtime: go
+image: docker.io/thunderboltsid/figlet:latest
+imageDigest: sha256:99d7c274304547296f24b9ac3d97618e2111748dc4efa862b308f9e0a18182d4
+builder: paketobuildpacks/builder:base
+builders:
+  base: paketobuildpacks/builder:base
+  default: paketobuildpacks/builder:base
+  full: paketobuildpacks/builder:full
+buildpacks:
+- paketo-buildpacks/go-dist
+- ghcr.io/boson-project/go-function-buildpack:tip
+healthEndpoints: {}
+volumes: []
+envs: []
+annotations: {}
+options: {}
+labels: []

applications/knative/function/figlet/go.mod

@@ -0,0 +1,5 @@
+module function
+
+go 1.14
+
+require github.com/thunderboltsid/cli-tools-go v0.2.0

applications/knative/function/figlet/go.sum

@@ -0,0 +1,13 @@
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/thunderboltsid/cli-tools-go v0.2.0 h1:0D14o1dg4PkHzcW3I3O6zW0tCxLFo4mrPCSg8dYP9vo=
+github.com/thunderboltsid/cli-tools-go v0.2.0/go.mod h1:gQy0ehUtS2UVwA/7ulEXwQCVi+j1bVBi0QAcaHUwZoc=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

applications/knative/function/figlet/handle.go

@@ -0,0 +1,52 @@
+package function
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"github.com/thunderboltsid/cli-tools-go/figlet"
+	"io/ioutil"
+	"net/http"
+)
+
+// Handle an HTTP Request.
+func Handle(ctx context.Context, res http.ResponseWriter, req *http.Request) {
+	res.WriteHeader(200)
+	res.Header().Add("Content-Type", "text/plain")
+
+	if req.Method == http.MethodPost {
+		if req.Body == nil {
+			http.Error(res, "Please send a request body", 400)
+			return
+		}
+
+		body, err := ioutil.ReadAll(req.Body)
+		defer req.Body.Close()
+		if err != nil {
+			http.Error(res, fmt.Sprintf("unable to read request body: %v", err), 500)
+			return
+		}
+
+
+		type bodyData struct {
+			Text string `json:"text"`
+		}
+		bd := bodyData{}
+
+		if err := json.Unmarshal(body, &bd); err != nil {
+			http.Error(res, fmt.Sprintf("unable to unmarshal request body: %v", err), 500)
+			return
+		}
+
+		if err := figlet.New(figlet.WithWriter(res), figlet.WithMsg(bd.Text)); err != nil {
+			http.Error(res, fmt.Sprintf("unable to create a figlet: %v", err), 500)
+			return
+		}
+		return
+	}
+
+	if err := figlet.New(figlet.WithWriter(res), figlet.WithMsg("ok")); err != nil {
+		http.Error(res, fmt.Sprintf("unable to return OK: %v", err), 500)
+		return
+	}
+}

applications/knative/function/figlet/handle_test.go

@@ -0,0 +1,59 @@
+package function
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+// TestHandle ensures that Handle executes without error, returns 2000 and sets
+// and sets a content-type.
+func TestHandle_GET(t *testing.T) {
+	var (
+		w   = httptest.NewRecorder()
+		req = httptest.NewRequest("GET", "http://example.com/test", nil)
+		res *http.Response
+		err error
+	)
+
+	// Invoke the Handler via a standard Go http.Handler
+	func(w http.ResponseWriter, req *http.Request) {
+		Handle(context.Background(), w, req)
+	}(w, req)
+	res = w.Result()
+	defer res.Body.Close()
+
+	// Assert postconditions
+	if err != nil {
+		t.Fatalf("unepected error in Handle: %v", err)
+	}
+	if res.StatusCode != 200 {
+		t.Fatalf("unexpected response code: %v", res.StatusCode)
+	}
+}
+
+func TestHandle_POST(t *testing.T) {
+	var (
+		w   = httptest.NewRecorder()
+		req = httptest.NewRequest("POST", "http://example.com/test", strings.NewReader(`{"text":"test"}`))
+		res *http.Response
+		err error
+	)
+
+	// Invoke the Handler via a standard Go http.Handler
+	func(w http.ResponseWriter, req *http.Request) {
+		Handle(context.Background(), w, req)
+	}(w, req)
+	res = w.Result()
+	defer res.Body.Close()
+
+	// Assert postconditions
+	if err != nil {
+		t.Fatalf("unepected error in Handle: %v", err)
+	}
+	if res.StatusCode != 200 {
+		t.Fatalf("unexpected response code: %v", res.StatusCode)
+	}
+}

applications/knative/sequence/example.yaml

@@ -0,0 +1,111 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: knative-sequence
+
+---
+
+apiVersion: serving.knative.dev/v1
+kind: Service
+metadata:
+  name: event-display
+  namespace: knative-sequence
+spec:
+  template:
+    spec:
+      containers:
+        - image: gcr.io/knative-releases/knative.dev/eventing/cmd/event_display
+
+---
+
+apiVersion: serving.knative.dev/v1
+kind: Service
+metadata:
+  name: first
+  namespace: knative-sequence
+spec:
+  template:
+    spec:
+      containers:
+        - image: gcr.io/knative-releases/knative.dev/eventing/cmd/appender
+          env:
+            - name: MESSAGE
+              value: " - Handled by 0"
+
+---
+
+apiVersion: serving.knative.dev/v1
+kind: Service
+metadata:
+  name: second
+  namespace: knative-sequence
+spec:
+  template:
+    spec:
+      containers:
+        - image: gcr.io/knative-releases/knative.dev/eventing/cmd/appender
+          env:
+            - name: MESSAGE
+              value: " - Handled by 1"
+
+---
+
+apiVersion: serving.knative.dev/v1
+kind: Service
+metadata:
+  name: third
+  namespace: knative-sequence
+spec:
+  template:
+    spec:
+      containers:
+        - image: gcr.io/knative-releases/knative.dev/eventing/cmd/appender
+          env:
+            - name: MESSAGE
+              value: " - Handled by 2"
+---
+
+apiVersion: flows.knative.dev/v1
+kind: Sequence
+metadata:
+  name: sequence
+  namespace: knative-sequence
+spec:
+  channelTemplate:
+    apiVersion: messaging.knative.dev/v1
+    kind: InMemoryChannel
+  steps:
+    - ref:
+        apiVersion: serving.knative.dev/v1
+        kind: Service
+        name: first
+    - ref:
+        apiVersion: serving.knative.dev/v1
+        kind: Service
+        name: second
+    - ref:
+        apiVersion: serving.knative.dev/v1
+        kind: Service
+        name: third
+  reply:
+    ref:
+      kind: Service
+      apiVersion: serving.knative.dev/v1
+      name: event-display
+
+---
+
+apiVersion: sources.knative.dev/v1beta2
+kind: PingSource
+metadata:
+  name: ping-source
+  namespace: knative-sequence
+spec:
+  schedule: "*/1 * * * *"
+  contentType: "application/json"
+  data: '{"message": "Hello world!"}'
+  sink:
+    ref:
+      apiVersion: flows.knative.dev/v1
+      kind: Sequence
+      name: sequence