@Throws(IOException::class)
            override fun authenticate(route: Route?, response: Response): Request? {
              if (response.request.header("Authorization") != null) {
                return null // Give up, we've already attempted to authenticate.
              }

              println("Authenticating for response: $response")
              println("Challenges: ${response.challenges()}")

This topic provides commands to set up different configurations of hosts, nodes, and drives. The examples provided here can be used as a starting point for other configurations.

1. [Standalone Deployment](#standalone-deployment)

    // make sure that no exception is thrown by flushQuietly when the mock does
    // throw an exception on flush.
    setupFlushable(true);
    Flushables.flushQuietly(mockFlushable);
  }

  // Set up a flushable to expect to be flushed, and optionally to
  // throw an exception.
  private void setupFlushable(boolean shouldThrowOnFlush) throws IOException {
    mockFlushable = mock(Flushable.class);
    if (shouldThrowOnFlush) {

        StringBuilder currentArg = null;

        for (String arg : args) {
            boolean addedToBuffer = false;

            if (arg.startsWith("\"")) {
                // if we're in the process of building up another arg, push it and start over.
                // this is for the case: "-Dfoo=bar "-Dfoo2=bar two" (note the first unterminated quote)
                if (currentArg != null) {

  if ! checkUserExists ; then
    echo "Creating user '$USER'"
    cat $MINIO_ACCESSKEY_SECRETKEY_TMP | ${MC} admin user add myminio
  else
    echo "User '$USER' already exists."
  fi
  #clean up credentials files.
  rm -f $MINIO_ACCESSKEY_SECRETKEY_TMP

  # set policy for user
  if [ ! -z $POLICY -a $POLICY != " " ] ; then
      echo "Adding policy '$POLICY' for '$USER'"

    fi
  else
    echo "Svcacct '$SVCACCT' already exists."
  fi
  #clean up credentials files.
  rm -f $MINIO_ACCESSKEY_SECRETKEY_TMP
}

# Try connecting to MinIO instance
{{- if .Values.tls.enabled }}
scheme=https
{{- else }}
scheme=http
{{- end }}
connectToMinio $scheme

See [Gradle platform architecture](platforms.md) for a list of the platforms and more details.

## Gradle runtimes

Gradle is also made up of several different processes that work together to "run the build", such as the Gradle daemon and the `gradlew` command.

Each process, or "runtime", applies different constraints to the code that runs in that process.

For example, an 16-server distributed setup with 200 drives per node would continue serving files, up to 4 servers can be offline in default configuration i.e around 800 drives down MinIO would continue to read and write objects.

    statuses "~1.5.0"
    unpipe "~1.0.0"

find-up@5.0.0:
  version "5.0.0"
  resolved "https://registry.yarnpkg.com/find-up/-/find-up-5.0.0.tgz#4c92819ecb7083561e4f4a240a86be5198f536fc"
  integrity sha512-78/PXT1wlLLDgTzDs7sjq9hzz0vXD+zn+7wypEe4fXQxCmdmqfGsEPQxmiCSQI3ajFV91bVSsvNtrJRiW6nGng==
  dependencies:
    locate-path "^6.0.0"
    path-exists "^4.0.0"

find-up@^4.0.0:
  version "4.1.0"

## Developing

If you already cloned the <a href="https://github.com/fastapi/fastapi" class="external-link" target="_blank">fastapi repository</a> and you want to deep dive in the code, here are some guidelines to set up your environment.

### Virtual environment

Follow the instructions to create and activate a [virtual environment](virtual-environments.md){.internal-link target=_blank} for the internal code of `fastapi`.