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Merged
reggeenr merged 1 commit into from
May 8, 2025
Merged

Update gRPC example to support transport credentials #190

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26 changes: 23 additions & 3 deletions grpc/client/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@ package main

import (
"context"
"crypto/x509"
"encoding/json"
"fmt"
"log"
Expand All @@ -13,6 +14,7 @@ import (
"github.com/gorilla/mux"
ec "github.com/qu1queee/CodeEngine/grpc/ecommerce"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/credentials/insecure"
)

Expand Down Expand Up @@ -98,10 +100,28 @@ func BuyHandler(w http.ResponseWriter, r *http.Request, groceryClient ec.Grocery
}

func main() {
localEndpoint := os.Getenv("LOCAL_ENDPOINT_WITH_PORT")
endpoint := os.Getenv("ENDPOINT_WITH_PORT")
if endpoint == "" {
log.Fatalf("no endpoint set: %s", endpoint)
}
certPool, err := x509.SystemCertPool()
if err != nil {
log.Fatalf("failed to get cert pool: %v", err)
}
creds := credentials.NewClientTLSFromCert(certPool, "")
insArg := os.Getenv("INSECURE")
if insArg != "" {
unencrypted, err := strconv.ParseBool(insArg)
if err != nil {
log.Fatalf("could not parse %v: ", err)
}
if unencrypted {
creds = insecure.NewCredentials()
}
}

fmt.Printf("using local endpoint: %s\n", localEndpoint)
conn, err := grpc.Dial(localEndpoint, grpc.WithTransportCredentials(insecure.NewCredentials()))
fmt.Printf("using endpoint: %s\n", endpoint)
conn, err := grpc.Dial(endpoint, grpc.WithTransportCredentials(creds))
if err != nil {
log.Fatalf("failed to connect: %v", err)
}
Expand Down
2 changes: 1 addition & 1 deletion grpc/run
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ echo "[INFO] Local endpoint is: ${SERVER_INTERNAL_ENDPOINT}"

# Create the client server app
echo "[INFO] Creating CE client/server application ${CLIENT_APP_NAME}"
ibmcloud ce app create --name "${CLIENT_APP_NAME}" --image icr.io/codeengine/grpc-client --min-scale 0 --env LOCAL_ENDPOINT_WITH_PORT="${SERVER_INTERNAL_ENDPOINT}:80"
ibmcloud ce app create --name "${CLIENT_APP_NAME}" --image icr.io/codeengine/grpc-client --min-scale 0 --env INSECURE=true --env ENDPOINT_WITH_PORT="${SERVER_INTERNAL_ENDPOINT}:80"

# Get the client server public endpoint
echo "[INFO] Retrieving client/server public endpoint"
Expand Down