Python 7.0pl5 Manuale Utente Scaricare il pdf (Pagina 36)

Event Framework

Note that whatever mechanism is used to initiate program shutdown using these features, messages

will be displayed via the logger indicating that shutdown has been scheduled and that it has arrived.

Additional messages will be displayed via the logger when the shutdown process is suspended and re-

sumed.

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Dumpleton 1
Software 1
Consulting 1
Pty Limited 1
Table of Contents 3
Manual Overview 7
Python Modules 9
Module Descriptions 10
Installation and Setup 10
Specifying a Log File 14
Exceptions in a Callback 17
Logging Facility 18
Configuration File 20
Naming Hierarchies 21
Environment Variables 21
Unique Identifiers 22
Process Identity 23
Program Setup 24
Event Framework 26
Real Time Events 28
Destroying Agents 29
Alarms and Timers 29
Recurring Actions 30
Socket Events 31
Program Signals 32
Program Shutdown 33
Service Naming 38
Service Audience 39
Anonymous Service 39
Service Registry 41
Service Announcements 43
Group Announcements 44
Service Lookup 44
Service Reports 47
Publishing Reports 48
Monitoring Reports 48
Lifetime of Reports 50
Identity of Subscribers 53
Existence of Publishers 55
Service Requests 57
Detecting a Failure 61
Servicing a Request 64
Generating a Failure 65
Delaying a Response 66
Invalid Request Method 69
Local Service Requests 69
Exchange Initialisation 72
Service Availability 72
Authorisation of Clients 75
Distributed Exchange Server 75
Multiple Exchange Groups 76
Message Encoding 79
Mapping of Scalar Types 81
The HTTP Daemon 88
The File Server 89
Client Authorisation 90
User Authorisation 91
HTTP Server Objects 91
The Error Servlet 92
The Redirect Servlet 93
The Echo Servlet 93
The File Servlet 93
Logging of Requests 94
Persistent Connections 96
Destruction of Servlets 98
Processing Content 99
The Form Servlet 100
Slow HTTP Clients 101
Servlet Objects 102
Servlet Plugins 106
Writing a Plugin 108
Plugin Aliasing 108
The RPC Gateway 112
The Client Application 113
Restricting Client Access 113
Duplicate Services 114
User Defined Types 115
Managing User Sessions 116
The XML-RPC Gateway 119
Remote Access 120

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Python 7.0pl5 Manuale Utente Pagina 36

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