Update README.md, resolver.go, and 2 more files...

api/README.md

@@ -4,3 +4,17 @@ Basic APIs:
 * /fetch - retrieve traffic data
 * /stats - retrieve statistics of collected data
 * /viewer - web ui
+
+## Remote Debugging
+### Setup remote debugging
+1. Run `go get github.com/go-delve/delve/cmd/dlv`
+2. Create a "Go Remote" run/debug configuration in Intellij, set to localhost:2345
+3. Build and push a debug image using
+   `docker build . -t  gcr.io/up9-docker-hub/mizu/debug:latest -f debug.Dockerfile && docker push gcr.io/up9-docker-hub/mizu/debug:latest`
+
+### Connecting
+1. Start mizu using the cli with the debug image `mizu tap --mizu-image gcr.io/up9-docker-hub/mizu/debug:latest {tapped_pod_name}`
+2. Forward the debug port using `kubectl port-forward -n default mizu-collector 2345:2345`
+3. Run the run/debug configuration you've created earlier in Intellij.
+
+<small>Do note that dlv won't start the api until a debugger connects to it.</small>

api/pkg/resolver/resolver.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	k8serrors "k8s.io/apimachinery/pkg/api/errors"
 
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -151,6 +152,14 @@ func (resolver *Resolver) infiniteErrorHandleRetryFunc(ctx context.Context, fun
 		err := fun(ctx)
 		if err != nil {
 			resolver.errOut <- err
+
+			var statusError *k8serrors.StatusError
+			if errors.As(err, &statusError) {
+				if statusError.ErrStatus.Reason == metav1.StatusReasonForbidden {
+					fmt.Printf("Resolver loop encountered permission error, aborting event listening - %v\n", err)
+					return
+				}
+			}
 		}
 		if ctx.Err() != nil { // context was cancelled or errored
 			return

cli/mizu/mizuRunner.go

@@ -109,7 +109,7 @@ func createRBACIfNecessary(ctx context.Context, kubernetesProvider *kubernetes.P
 		return false
 	}
 	if !mizuRBACExists {
-		err := kubernetesProvider.CreateMizuRBAC(ctx, MizuResourcesNamespace, Version)
+		err := kubernetesProvider.CreateMizuRBAC(ctx, MizuResourcesNamespace, fmt.Sprintf("%s::%s", Version, GitCommitHash))
 		if err != nil {
 			fmt.Printf("warning: could not create mizu rbac resources %v\n", err)
 			return false

debug.Dockerfile

@@ -0,0 +1,42 @@
+# creates image in which mizu api is remotely debuggable using delve
+FROM node:14-slim AS site-build
+
+WORKDIR /ui-build
+
+COPY ui .
+RUN npm i
+RUN npm run build
+
+
+FROM golang:1.16-alpine AS builder
+# Set necessary environment variables needed for our image.
+ENV CGO_ENABLED=1 GOOS=linux GOARCH=amd64
+
+RUN apk add libpcap-dev gcc g++ make
+
+# Move to api working directory (/api-build).
+WORKDIR /api-build
+
+COPY api/go.mod api/go.sum ./
+RUN go mod download
+# cheap trick to make the build faster (As long as go.mod wasn't changes)
+RUN go list -f '{{.Path}}@{{.Version}}' -m all | sed 1d | grep -e 'go-cache' -e 'sqlite' | xargs go get
+
+# Copy and build api code
+COPY api .
+RUN go build -gcflags="all=-N -l" -o mizuagent .
+
+
+FROM golang:1.16-alpine
+
+RUN apk add bash libpcap-dev tcpdump
+WORKDIR /app
+
+# Copy binary and config files from /build to root folder of scratch container.
+COPY --from=builder ["/api-build/mizuagent", "."]
+COPY --from=site-build ["/ui-build/build", "site"]
+
+# install remote debugging tool
+RUN go get github.com/go-delve/delve/cmd/dlv
+
+CMD ["sh", "-c", "dlv --headless=true --listen=:2345 --log --api-version=2 --accept-multiclient exec ./mizuagent -- -i any -hardump -targets ${TAPPED_ADDRESSES}"]