ceph/src/jaegertracing/thrift/tutorial/ocaml/CalcClient.ml

   1 (*
   2  Licensed to the Apache Software Foundation (ASF) under one
   3  or more contributor license agreements. See the NOTICE file
   4  distributed with this work for additional information
   5  regarding copyright ownership. The ASF licenses this file
   6  to you under the Apache License, Version 2.0 (the
   7  "License"); you may not use this file except in compliance
   8  with the License. You may obtain a copy of the License at
   9
  10    http://www.apache.org/licenses/LICENSE-2.0
  11
  12  Unless required by applicable law or agreed to in writing,
  13  software distributed under the License is distributed on an
  14  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  15  KIND, either express or implied. See the License for the
  16  specific language governing permissions and limitations
  17  under the License.
  18 *)
  19
  20 open Arg
  21 open Thrift
  22 open Tutorial_types
  23 open Shared_types
  24
  25 exception Die;;
  26 let sod = function
  27     Some v -> v
  28   | None -> raise Die;;
  29
  30 type connection = {
  31   trans : Transport.t ;
  32   proto : Thrift.Protocol.t;
  33   calc : Calculator.client ;
  34 }
  35
  36 let connect ~host port =
  37   let tx = new TSocket.t host port in
  38   let proto = new TBinaryProtocol.t tx in
  39   let calc = new Calculator.client proto proto in
  40     tx#opn;
  41     { trans = tx ; proto = proto; calc = calc }
  42 ;;
  43
  44 let doclient () =
  45   let cli = connect ~host:"127.0.0.1" 9090 in
  46   try
  47     cli.calc#ping ;
  48     Printf.printf "ping()\n" ; flush stdout ;
  49     (let sum = cli.calc#add (Int32.of_int 1) (Int32.of_int 1) in
  50        Printf.printf "1+1=%ld\n" sum ;
  51        flush stdout) ;
  52     (let w = new work in
  53        w#set_op Operation.DIVIDE ;
  54        w#set_num1 (Int32.of_int 1) ;
  55        w#set_num2 (Int32.of_int 0) ;
  56        try
  57          let quotient = cli.calc#calculate (Int32.of_int 1) w in
  58            Printf.printf "Whoa? We can divide by zero!\n" ; flush stdout
  59        with InvalidOperation io ->
  60          Printf.printf "InvalidOperation: %s\n" io#grab_why ; flush stdout) ;
  61     (let w = new work in
  62        w#set_op Operation.SUBTRACT ;
  63        w#set_num1 (Int32.of_int 15) ;
  64        w#set_num2 (Int32.of_int 10) ;
  65        let diff = cli.calc#calculate (Int32.of_int 1) w in
  66          Printf.printf "15-10=%ld\n" diff ; flush stdout) ;
  67     (let ss = cli.calc#getStruct (Int32.of_int 1) in
  68        Printf.printf "Check log: %s\n" ss#grab_value ; flush stdout) ;
  69     cli.trans#close
  70   with Transport.E (_,what) ->
  71     Printf.printf "ERROR: %s\n" what ; flush stdout
  72 ;;
  73
  74 doclient();;