/jsrunner

This is an experimentation to lean implementing gRPC service to run JavaScript code in Rust with V8.

Primary LanguageRust

jsrunner

This is an experimentation to lean implementing gRPC service to run JavaScript code in Rust with V8.

Start gRPC server

cargo run

gRPC call examples

simple

time grpcurl \
  -plaintext \
  -import-path ./proto \
  -proto service.proto \
  -d '{"code": "1+1"}' \
  '[::1]:50051' jsrunner.JSRunnerService/Run

while true; do grpcurl \
  -plaintext \
  -import-path ./proto \
  -proto service.proto \
  -d '{"code": "new Date()"}' \
  '[::1]:50051' jsrunner.JSRunnerService/Run; sleep 1; done

object

CODE=$(cat <<EOF
var name = "dragon3"
var obj = {"name": name, "ts": new Date()};
obj;
EOF
)

grpcurl \
  -plaintext \
  -import-path ./proto \
  -proto service.proto \
  -d "$(jq -cn --arg code "${CODE}" '$ARGS.named')" \
  '[::1]:50051' jsrunner.JSRunnerService/Run

long running

CODE=$(cat <<EOF
var sum = 0;
for (var i = 0; i < 1e9; i++) {
    sum += i;
}
sum;
EOF
)

grpcurl \
  -plaintext \
  -import-path ./proto \
  -proto service.proto \
  -d "$(jq -cn --arg code "${CODE}" '$ARGS.named')" \
  '[::1]:50051' jsrunner.JSRunnerService/Run

memory limit

CODE=$(cat <<EOF
var arr = [];
for (var i = 0; i < 1e7; i++) {
    arr.push(new Array(1000).fill('a'));
}
arr.length;
EOF
)

grpcurl \
  -plaintext \
  -import-path ./proto \
  -proto service.proto \
  -d "$(jq -cn --arg code "${CODE}" '$ARGS.named')" \
  '[::1]:50051' jsrunner.JSRunnerService/Run