def send(context, message):
# context allows you to send messages to other functions, as long as you
# know their address. An address is composed of a function type and an id.
any = Any()
any.Pack(Hello())
context.send("walkthrough/reply", "some-id", any) # see reply() below.
# you can also use the convenience alternative, that would pack the argument to a google.protobuf.Any
context.pack_and_send("walkthrough/reply", "some-id", Hello())
def any_example(context, any_message):
# messages sent to a Python function are always packed into a google.protobuf.Any
# (https://developers.google.com/protocol-buffers/docs/reference/java/com/google/protobuf/Any.html)
# Therefore the first thing we need to do is to unpack it.
if not any_message.Is(Hello.DESCRIPTOR):
raise TypeError('Unexpected message type')
hello = Hello()
any_message.Unpack(hello)
print(hello)
def reply(builder):
reply_to = ("example-runner", "reply", "0")
builder.with_invocation(Hello(), reply_to)
def state4(builder):
counter = Counter()
counter.value = 1
builder.with_state("counter", counter)
builder.with_invocation(Hello())
def state1(builder):
builder.with_state("counter")
builder.with_invocation(Hello())
def union_type_hint(builder):
hello = Hello()
builder.with_invocation(hello)
another_hello = AnotherHello()
builder.with_invocation(another_hello)
def hello(builder):
msg = Hello()
msg.world = "Hello world!"
builder.with_invocation(msg)