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Improve example (#5)

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Tanguy 2022-11-23 17:53:57 +01:00 committed by GitHub
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1 changed files with 19 additions and 3 deletions
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22
examples/simple_tcp_ping/main.nim
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@ -7,7 +7,15 @@ type
testground(client): testground(client):
let let
# signalAndWait is a shortcut for
# x = await client.signal("setup")
# await client.waitForBarrier("setup", client.testInstanceCount)
# In this case, it will signal that we are at the "setup" stage,
# and wait for "testInstanceCount" (so every instance) to reach this stage.
#
# signal will also return the number of nodes that reached this stage before us
myId = await client.signalAndWait("setup", client.testInstanceCount) myId = await client.signalAndWait("setup", client.testInstanceCount)
# here we are using this id to generate our local ip
myIp = client.testSubnet.split('.')[0..1].join(".") & ".1." & $myId myIp = client.testSubnet.split('.')[0..1].join(".") & ".1." & $myId
serverIp = client.testSubnet.split('.')[0..1].join(".") & ".1.1" serverIp = client.testSubnet.split('.')[0..1].join(".") & ".1.1"
await client.updateNetworkParameter( await client.updateNetworkParameter(
@ -15,34 +23,42 @@ testground(client):
network: "default", network: "default",
ipv4: some myIp & "/24", ipv4: some myIp & "/24",
enable: true, enable: true,
# signal this state once the network parameters are applied
callback_state: "network_setup", callback_state: "network_setup",
callback_target: some client.testInstanceCount, callback_target: some client.testInstanceCount,
routing_policy: "accept_all", routing_policy: "accept_all",
) )
) )
# wait for everyone to reach the state with proper networking setup
await client.waitForBarrier("network_setup", client.testInstanceCount) await client.waitForBarrier("network_setup", client.testInstanceCount)
# useless pubsub demo
randomize() randomize()
await client.publish("rands", AwesomeStruct(rand: rand(100))) await client.publish("rands", AwesomeStruct(rand: rand(100)))
let randomValues = client.subscribe("rands", AwesomeStruct) let randomValues = client.subscribe("rands", AwesomeStruct)
for _ in 0 ..< 2: for _ in 0 ..< 2:
echo await randomValues.popFirst() echo await randomValues.popFirst()
# read parameters from the composition or command line flags
let let
payload = client.param(string, "payload") payload = client.param(string, "payload")
count = client.param(int, "count") count = client.param(int, "count")
printResult = client.param(bool, "printResult") printResult = client.param(bool, "printResult")
if myId == 1: # server if myId == 1: # server
let let server = createStreamServer(initTAddress(myIp & ":5050"), flags = {ReuseAddr})
server = createStreamServer(initTAddress(myIp & ":5050"), flags = {ReuseAddr}) # We are ready for clients
connection = await server.accept() discard await client.signalAndWait("ready", client.testInstanceCount)
let connection = await server.accept()
for _ in 0 ..< count: for _ in 0 ..< count:
doAssert (await connection.write(payload.toBytes())) == payload.len doAssert (await connection.write(payload.toBytes())) == payload.len
connection.close() connection.close()
else: # client else: # client
# wait for the server to be started
discard await client.signalAndWait("ready", client.testInstanceCount)
let connection = await connect(initTAddress(serverIp & ":5050")) let connection = await connect(initTAddress(serverIp & ":5050"))
var buffer = newSeq[byte](payload.len) var buffer = newSeq[byte](payload.len)