Bump TinyGo and TinyGo proxy wasm SDK (#247)

* Bump TinyGo and TinyGo proxy wasm SDK

* Latest tinygo example

* Codgen with latest master

* Codegen

.github/pull_request_template.md

@@ -11,10 +11,10 @@ Users ran into this bug doing ... \ Users needed this feature to ...
 # Checklist:
 
 - [ ] I included a concise, user-facing changelog (for details, see https://github.com/solo-io/go-utils/tree/master/changelogutils) which references the issue that is resolved.
-- [ ] If I updated APIs (our protos) or helm values, I ran `make install-deps generated-code` from `tools/wasme/cli` to ensure there will be no code diff
+- [ ] If I updated APIs (our protos) or helm values, I ran `make install-deps operator-gen generated-code` from `tools/wasme/cli` to ensure there will be no code diff
 - [ ] I followed guidelines laid out in the Gloo [contribution guide](https://docs.solo.io/gloo/latest/contributing/)
 - [ ] I opened a draft PR or added the work in progress label if my PR is not ready for review
 - [ ] I have performed a self-review of my own code
 - [ ] I have commented my code, particularly in hard-to-understand areas
 - [ ] I have made corresponding changes to the documentation
-- [ ] I have added tests that prove my fix is effective or that my feature works
+- [ ] I have added tests that prove my fix is effective or that my feature works

tools/wasme/changelog/v0.0.33/bump-tinygo.yaml

@@ -0,0 +1,7 @@
+changelog:
+- dependencyOwner: tinygo-org
+  dependencyRepo: tinygo
+  dependencyTag: v0.17.0
+  description: Update TinyGo to v 0.17.0. This fixes several issues, especially around memory management.
+  issueLink: https://github.com/solo-io/wasm/issues/246
+  type: DEPENDENCY_BUMP

tools/wasme/cli/builder/Dockerfile

@@ -10,9 +10,8 @@ RUN apt install expect-dev -y
 
 RUN npm install -g @bazel/bazelisk
 
-# TODO: use the latest stable release package after the WASI supported is officially released
-#   this corresponds to https://github.com/tinygo-org/tinygo/commit/9a015f4f6441fd68eabe35b3dc9748a5467d5934
-RUN wget https://storage.googleapis.com/getenvoy-package/tinygo-nightly-packages/tinygo_amd64.deb
+# Release v0.17.0 of tinygo
+RUN wget https://github.com/tinygo-org/tinygo/releases/download/v0.17.0/tinygo_0.17.0_amd64.deb -O tinygo_amd64.deb
 RUN dpkg -i tinygo_amd64.deb && rm tinygo_amd64.deb
 
 RUN wget https://golang.org/dl/go1.15.2.linux-amd64.tar.gz

tools/wasme/cli/example/tinygo/go.mod

@@ -2,4 +2,6 @@ module main
 
 go 1.15
 
-require github.com/tetratelabs/proxy-wasm-go-sdk v0.0.8
+require (
+	github.com/tetratelabs/proxy-wasm-go-sdk v0.1.1
+)

tools/wasme/cli/example/tinygo/main.go

@@ -5,10 +5,10 @@ import (
 	"github.com/tetratelabs/proxy-wasm-go-sdk/proxywasm/types"
 )
 
-// Other examples can be found at https://github.com/tetratelabs/proxy-wasm-go-sdk/tree/v0.0.8/examples
+// Other examples can be found at https://github.com/tetratelabs/proxy-wasm-go-sdk/tree/v0.1.1/examples
 
 func main() {
-	proxywasm.SetNewHttpContext(newHttpContext)
+	proxywasm.SetNewRootContext(newRootContext)
 }
 
 type httpHeaders struct {
@@ -17,11 +17,20 @@ type httpHeaders struct {
 	contextID uint32
 }
 
-func newHttpContext(rootContextID, contextID uint32) proxywasm.HttpContext {
+type rootContext struct {
+	// You'd better embed the default root context
+	// so that you don't need to reimplement all the methods by yourself.
+	proxywasm.DefaultRootContext
+}
+
+func newRootContext(uint32) proxywasm.RootContext { return &rootContext{} }
+
+// Override DefaultRootContext.
+func (*rootContext) NewHttpContext(contextID uint32) proxywasm.HttpContext {
 	return &httpHeaders{contextID: contextID}
 }
 
-// override
+// Override DefaultHttpContext.
 func (ctx *httpHeaders) OnHttpRequestHeaders(numHeaders int, endOfStream bool) types.Action {
 	hs, err := proxywasm.GetHttpRequestHeaders()
 	if err != nil {
@@ -34,15 +43,15 @@ func (ctx *httpHeaders) OnHttpRequestHeaders(numHeaders int, endOfStream bool) t
 	return types.ActionContinue
 }
 
-// override
+// Override DefaultHttpContext.
 func (ctx *httpHeaders) OnHttpResponseHeaders(numHeaders int, endOfStream bool) types.Action {
 	if err := proxywasm.SetHttpResponseHeader("hello", "world"); err != nil {
 		proxywasm.LogCriticalf("failed to set response header: %v", err)
 	}
 	return types.ActionContinue
 }
 
-// override
+// Override DefaultHttpContext.
 func (ctx *httpHeaders) OnHttpStreamDone() {
 	proxywasm.LogInfof("%d finished", ctx.contextID)
 }