dxx.app.procjob source code

1 /**
2 Copyright: 2018 Mark Fisher
3 
4 License:
5 Permission is hereby granted, free of charge, to any person obtaining a copy of
6 this software and associated documentation files (the "Software"), to deal in
7 the Software without restriction, including without limitation the rights to
8 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
9 of the Software, and to permit persons to whom the Software is furnished to do
10 so, subject to the following conditions:
11 
12 The above copyright notice and this permission notice shall be included in all
13 copies or substantial portions of the Software.
14 
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 SOFTWARE.
22 **/
23 module dxx.app.procjob;
24 
25 private import dxx.sys.spawn;
26 private import dxx.app;
27 private import dxx.util;
28 private import dxx;
29 
30 /**
31  * This class defines a notifying job that starts a native process.
32  */
33 class ProcessJob : PlatformJobBase {
34 
35     static class StdIOWriter : TextWriter {
36         string prefix;
37         shared
38         this(string p) {
39             prefix = p;
40         }
41         void writeText(dstring text) {
42             MsgLog.info(MsgParam!("[%s]: %s")(prefix,text));
43         }
44     }
45     string cmd;
46     string[] param;
47     string result;
48 
49     protected ExternalProcess proc;
50     protected TextWriter stdErrWriter;
51     protected TextWriter stdOutWriter;
52 
53     override shared
54     void setup() {
55         super.setup;
56     }
57 
58     override shared
59     void processPlatformJob() {
60         (cast(ProcessJob)this).shell;
61     }
62 
63     nothrow
64     override shared
65     void terminate() {
66         if(proc) {
67             try {
68                 (cast(ExternalProcess)proc).wait;
69                 //enforce(proc.state == ExternalProcessState.Stopped);
70             } catch(Throwable e) {
71                 MsgLog.error(e.message);
72             }
73         }
74         super.terminate;
75     }
76     shared
77     this(string cmd,string[] param) {
78         super();
79         this.cmd = cmd;
80         this.param = (cast(shared(string[]))param).dup;
81         this.stdOutWriter = new shared(StdIOWriter)(cmd);
82         this.stdErrWriter = new shared(StdIOWriter)(cmd ~ ":err");
83         this.proc = cast(shared(ExternalProcess))new ExternalProcess();
84     }
85     auto shell() {
86         auto exec = cmd.findExecutablePath;
87         //auto stdOutWriter = new ProtectedTextStorage();
88         //auto stdOutWriter = new Logg7ingWriter(cmd);
89         return proc.run(exec,param,runtimeConstants.curDir,stdOutWriter,stdErrWriter);
90         //proc.wait();
91         //enforce(proc.state == ExternalProcessState.Stopped);
92         //enforce(proc.result == 0);
93         //return proc.result;
94         //return stdOutWriter.readText();
95     }
96 }
97 
98 unittest {
99     import std.stdio;
100     auto j = new shared(ProcessJob)("ls",["-lh"]);
101     j.execute();
102     assert(j.terminated);
103     writeln("Job status: ",j.status);
104     assert(j.status == Job.Status.THROWN_EXCEPTION);
105     assert(j.thrownException !is null);
106 }