Software Configuration Management Using Vesta

By: Clark Allan Heydon, Roy Levin, Timothy P. Mann

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Hardcover | 1 February 2006

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Hardcover
284 Pages

Dimensions(cm)
24.13 x 15.88 x 1.91

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This book presents a comprehensive survey of the Vesta system for software configuration management (SCM). Vesta, unlike other SCM systems, is specifically designed to handle very large software projects comprising tens of millions of lines of code and beyond. Researchers in the field of software engineering and specialists in the construction of software development tools will especially benefit from this work, but it will also appeal to those responsible for designing and deploying configuration management solutions for large software systems.

Three important but hard-to-achieve properties lie at the heart of Vesta's unique approach to software configuration management:

Every build is repeatable

Every build is incremental

Every build is consistent

To realize these properties in a practical SCM system, Vesta provides a novel repository to store the versions of the files that make up an evolving software system and a flexible language for writing modular configuration descriptions that define how the system is put together. This book explains in depth these facilities and the suite of tools that supports them, together with a methodology for applying them in practice.

Readers who seek more information about Vesta may download the entire system as well as other publications, reference documents, and user documentation from the Vesta home page at http: //www.vestasys.org.

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Preface	p. vii
Introducing Vesta
Introduction	p. 5
Some Scenarios	p. 6
The Configuration Management Challenge	p. 8
The Vesta Response	p. 9
Essential Background	p. 13
The Unix File System	p. 14
Naming Files and Directories	p. 14
Mount Points	p. 14
Links	p. 15
Properties of Files	p. 15
Unix Processes	p. 16
The Unix Shell	p. 17
The Unix Programming Environment	p. 18
Make	p. 20
The Architecture of Vesta	p. 21
System Components	p. 21
Source Management Components	p. 22
Build Components	p. 24
Storage Components	p. 27
Models and Modularity	p. 28
Vesta's Core Properties	p. 29
The User's View of Vesta
Managing Sources and Versions	p. 35
Names and Versions	p. 36
The Source Name Space	p. 36
Versioning	p. 37
Naming Files and Packages	p. 38
The Development Cycle	p. 40
The Outer Loop	p. 40
The Inner Loop	p. 41
Detailed Operation of the Repository Tools	p. 42
Version Control Alternatives	p. 44
Additional Repository Tools	p. 45
Mutable Files and Directories	p. 45
Replication	p. 46
Global Name Space	p. 46
A Replication Example	p. 48
The Replicator	p. 49
Cross-Repository Check-out	p. 50
Repository Metadata	p. 52
Mutable Attributes	p. 52
Access Control	p. 55
Metadata and Replication	p. 57
System Description Language	p. 59
Motivation	p. 59
Language Highlights	p. 60
The Environment Parameter	p. 62
Bindings	p. 63
Tool Encapsulation	p. 65
Closures	p. 67
Imports	p. 68
Building Systems in Vesta	p. 71
The Organization of System Models	p. 72
Hierarchies of System Models	p. 74
Bridges and the Standard Environment	p. 76
Library Models	p. 77
Application Models	p. 79
Putting It All Together	p. 80
Control Panel Models	p. 81
Customizing the Build Process	p. 84
Handling Large Scale Software	p. 88
Inside Vesta
Inside the Repository	p. 93
Support for Evaluation and Caching	p. 93
Derived Files and Shortids	p. 93
Evaluator Directories and Volatile Directories	p. 94
Fingerprints	p. 96
Inside the Repository Implementation	p. 98
Directory Implementation	p. 98
Shortids and Files	p. 100
Longids	p. 101
Copy-on-Write	p. 103
NFS Interface	p. 104
RPC Interfaces	p. 105
Implementing Replication	p. 105
Mastership	p. 105
Agreement	p. 106
Agreement-Preserving Primitives	p. 108
Propagating Attributes	p. 110
Incremental Building	p. 113
Overview of Function Caching	p. 113
Caching and Dynamic Dependencies	p. 115
The Function Cache Interface	p. 119
Computing Fine-Grained Dependencies	p. 120
Representing Dependencies	p. 120
Caching External Tool Invocations	p. 121
Caching User-Defined Function Evaluations	p. 123
Caching System Model Evaluations: A Special Case	p. 131
Error Handling	p. 132
Function Cache Implementation	p. 134
Cache Lookup	p. 135
Cache Entry Storage	p. 138
Synchronization	p. 139
Evaluation and Caching in Action	p. 139
Scratch Build of the Standard Environment	p. 139
Scratch Build of the Vesta Umbrella Library	p. 142
Scratch and Incremental Builds of the Evaluator	p. 144
Weeder	p. 147
How Deletion is Specified	p. 148
Implementation of the Weeder	p. 149
The Function Call Graph	p. 149
Concurrent Weeding	p. 152
Assessing Vesta
Competing Systems	p. 161
Loosely Connected Configuration Management Tools	p. 161
RCS	p. 162
CVS	p. 162
Make	p. 163
Integrated Configuration Management Systems	p. 165
DSEE	p. 165
ClearCASE	p. 167
Other Systems	p. 168
Vesta System Performance	p. 171
Platform Configuration	p. 172
Overall System Performance	p. 172
Performance Comparison with Make	p. 173
Performance Breakdown	p. 175
Caching Analysis	p. 177
Resource Usage	p. 178
Repository Performance	p. 180
Speed of File Operations	p. 181
Disk and Memory Consumption	p. 183
Speed of Repository Tools	p. 186
Speed of Cross-Repository Tools	p. 188
Speed of the Replicator	p. 189
Function Cache Performance	p. 190
Server Performance	p. 190
Measurements of the Stable Cache	p. 191
Disk and Memory Usage	p. 192
Function Cache Scalability	p. 192
Weeder Performance	p. 193
Interprocess Communication	p. 194
Conclusions	p. 197
Vesta in the Real World	p. 198
Vesta in the Future	p. 199
SDL Reference Manual	p. 203
Introduction	p. 203
Lexical Conventions	p. 204
Meta-notation	p. 204
Terminals	p. 204
Semantics	p. 205
Value Space	p. 205
Type Declarations	p. 206
Evaluation Rules	p. 207
Expr	p. 208
Literal	p. 209
Id	p. 209
List	p. 209
Binding	p. 212
Select	p. 213
Block	p. 214
Stmt	p. 215
Assign	p. 215
Iterate	p. 216
FuncDef	p. 216
FuncCall	p. 219
Model	p. 220
Files	p. 220
Imports	p. 224
File Name Interpretation	p. 227
Pragmas	p. 228
Primitives	p. 228
Functions on Type t_bool	p. 229
Functions on Type t_int	p. 229
Functions on Type t_text	p. 230
Functions on Type t_list	p. 232
Functions on Type t_binding	p. 234
Special Purpose Functions	p. 237
Type Manipulation Functions	p. 238
Tool Invocation Function	p. 239
Diagnostic Functions	p. 243
Concrete Syntax	p. 244
Grammar	p. 244
Ambiguity Resolution	p. 247
Tokens	p. 247
Reserved Identifiers	p. 249
The Vesta Web Site	p. 251
References	p. 253
Index	p. 257
Table of Contents provided by Ingram. All Rights Reserved.

Software Configuration Management Using Vesta

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