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9eaf824398
* add jaeger support, link hot container & req span * adds jaeger support now with FN_JAEGER_URL, there's a simple tutorial in the operating/metrics.md file now and it's pretty easy to get up and running. * links a hot request span to a hot container span. when we change this to sample at a lower ratio we'll need to finagle the hot container span to always sample or something, otherwise we'll hide that info. at least, since we're sampling at 100% for now if this is flipped on, can see freeze/unfreeze etc. if they hit. this is useful for debugging. note that zipkin's exporter does not follow the link at all, hence jaeger... and they're backed by the Cloud Empire now (CNCF) so we'll probably use it anyway. * vendor: add thrift for jaeger
104 lines
2.9 KiB
Haskell
104 lines
2.9 KiB
Haskell
--
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-- Licensed to the Apache Software Foundation (ASF) under one
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-- or more contributor license agreements. See the NOTICE file
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-- distributed with this work for additional information
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-- regarding copyright ownership. The ASF licenses this file
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-- to you under the Apache License, Version 2.0 (the
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-- "License"); you may not use this file except in compliance
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-- with the License. You may obtain a copy of the License at
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--
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-- http://www.apache.org/licenses/LICENSE-2.0
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--
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-- Unless required by applicable law or agreed to in writing,
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-- software distributed under the License is distributed on an
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-- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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-- KIND, either express or implied. See the License for the
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-- specific language governing permissions and limitations
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-- under the License.
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--
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{-# LANGUAGE OverloadedStrings #-}
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import qualified Calculator
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import Calculator_Iface
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import Tutorial_Types
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import SharedService_Iface
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import Shared_Types
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import Thrift
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import Thrift.Protocol.Binary
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import Thrift.Transport
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import Thrift.Server
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import Data.Int
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import Data.String
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import Data.Maybe
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import Text.Printf
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import Control.Exception (throw)
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import Control.Concurrent.MVar
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import qualified Data.Map as M
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import Data.Map ((!))
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import Data.Monoid
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data CalculatorHandler = CalculatorHandler {mathLog :: MVar (M.Map Int32 SharedStruct)}
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newCalculatorHandler = do
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log <- newMVar mempty
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return $ CalculatorHandler log
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instance SharedService_Iface CalculatorHandler where
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getStruct self k = do
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myLog <- readMVar (mathLog self)
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return $ (myLog ! k)
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instance Calculator_Iface CalculatorHandler where
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ping _ =
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print "ping()"
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add _ n1 n2 = do
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printf "add(%d,%d)\n" n1 n2
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return (n1 + n2)
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calculate self mlogid mwork = do
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printf "calculate(%d, %s)\n" logid (show work)
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let val = case op work of
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ADD ->
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num1 work + num2 work
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SUBTRACT ->
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num1 work - num2 work
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MULTIPLY ->
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num1 work * num2 work
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DIVIDE ->
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if num2 work == 0 then
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throw $
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InvalidOperation {
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invalidOperation_whatOp = fromIntegral $ fromEnum $ op work,
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invalidOperation_why = "Cannot divide by 0"
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}
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else
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num1 work `div` num2 work
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let logEntry = SharedStruct logid (fromString $ show $ val)
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modifyMVar_ (mathLog self) $ return .(M.insert logid logEntry)
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return $! val
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where
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-- stupid dynamic languages f'ing it up
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num1 = work_num1
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num2 = work_num2
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op = work_op
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logid = mlogid
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work = mwork
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zip _ =
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print "zip()"
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main = do
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handler <- newCalculatorHandler
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print "Starting the server..."
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runBasicServer handler Calculator.process 9090
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print "done."
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