11namespace GitVersion
22{
33 using System ;
4+ using System . Collections . Generic ;
5+ using System . IO ;
46 using System . Linq ;
7+ using System . Security . Cryptography ;
8+ using System . Text ;
59
610 using GitVersion . Helpers ;
711
8- public static class ExecuteCore
12+ using LibGit2Sharp ;
13+
14+ using YamlDotNet . Serialization ;
15+
16+ public class ExecuteCore
917 {
10- public static VersionVariables ExecuteGitVersion ( IFileSystem fileSystem , string targetUrl , string dynamicRepositoryLocation , Authentication authentication , string targetBranch , bool noFetch , string workingDirectory , string commitId )
18+ readonly IFileSystem fileSystem ;
19+ readonly Func < string , Func < string , VersionVariables > , VersionVariables > getOrAddFromCache ;
20+
21+
22+ public ExecuteCore ( IFileSystem fileSystem , Func < string , Func < string , VersionVariables > , VersionVariables > getOrAddFromCache = null )
23+ {
24+ if ( fileSystem == null )
25+ {
26+ throw new ArgumentNullException ( "fileSystem" ) ;
27+ }
28+
29+ this . getOrAddFromCache = getOrAddFromCache ;
30+ this . fileSystem = fileSystem ;
31+ }
32+
33+
34+ public VersionVariables ExecuteGitVersion ( string targetUrl , string dynamicRepositoryLocation , Authentication authentication , string targetBranch , bool noFetch , string workingDirectory , string commitId )
35+ {
36+ var gitDir = Repository . Discover ( workingDirectory ) ;
37+ using ( var repo = this . fileSystem . GetRepository ( gitDir ) )
38+ {
39+ // Maybe using timestamp in .git/refs directory is enough?
40+ var ticks = this . fileSystem . GetLastDirectoryWrite ( Path . Combine ( gitDir , "refs" ) ) ;
41+ var key = string . Format ( "{0}:{1}:{2}:{3}" , gitDir , repo . Head . CanonicalName , repo . Head . Tip . Sha , ticks ) ;
42+
43+ if ( this . getOrAddFromCache != null )
44+ {
45+ return this . getOrAddFromCache ( key , k =>
46+ {
47+ Logger . WriteInfo ( "Version not in memory cache. Attempting to load version from disk cache." ) ;
48+ return LoadVersionVariablesFromDiskCache ( key , gitDir , targetUrl , dynamicRepositoryLocation , authentication , targetBranch , noFetch , workingDirectory , commitId ) ;
49+ } ) ;
50+ }
51+
52+ return LoadVersionVariablesFromDiskCache ( key , gitDir , targetUrl , dynamicRepositoryLocation , authentication , targetBranch , noFetch , workingDirectory , commitId ) ;
53+ }
54+ }
55+
56+
57+ public bool TryGetVersion ( string directory , out VersionVariables versionVariables , bool noFetch , Authentication authentication )
58+ {
59+ try
60+ {
61+ versionVariables = ExecuteGitVersion ( null , null , authentication , null , noFetch , directory , null ) ;
62+ return true ;
63+ }
64+ catch ( Exception ex )
65+ {
66+ Logger . WriteWarning ( "Could not determine assembly version: " + ex ) ;
67+ versionVariables = null ;
68+ return false ;
69+ }
70+ }
71+
72+
73+ static string ResolveCurrentBranch ( IBuildServer buildServer , string targetBranch )
74+ {
75+ if ( buildServer == null )
76+ {
77+ return targetBranch ;
78+ }
79+
80+ var currentBranch = buildServer . GetCurrentBranch ( ) ?? targetBranch ;
81+ Logger . WriteInfo ( "Branch from build environment: " + currentBranch ) ;
82+
83+ return currentBranch ;
84+ }
85+
86+
87+ VersionVariables LoadVersionVariablesFromDiskCache ( string key , string gitDir , string targetUrl , string dynamicRepositoryLocation , Authentication authentication , string targetBranch , bool noFetch , string workingDirectory , string commitId )
88+ {
89+ using ( Logger . IndentLog ( "Loading version variables from disk cache" ) )
90+ {
91+ string cacheKey ;
92+ using ( var sha1 = SHA1 . Create ( ) )
93+ {
94+ // Make a shorter key by hashing, to avoid having to long cache filename.
95+ cacheKey = BitConverter . ToString ( sha1 . ComputeHash ( Encoding . UTF8 . GetBytes ( key ) ) ) . Replace ( "-" , "" ) ;
96+ }
97+
98+ var cacheDir = Path . Combine ( gitDir , "gitversion_cache" ) ;
99+ // If the cacheDir already exists, CreateDirectory just won't do anything (it won't fail). @asbjornu
100+ this . fileSystem . CreateDirectory ( cacheDir ) ;
101+
102+ var cacheFileName = string . Concat ( Path . Combine ( cacheDir , cacheKey ) , ".yml" ) ;
103+ VersionVariables vv = null ;
104+ if ( this . fileSystem . Exists ( cacheFileName ) )
105+ {
106+ using ( Logger . IndentLog ( "Deserializing version variables from cache file " + cacheFileName ) )
107+ {
108+ try
109+ {
110+ vv = VersionVariables . FromFile ( cacheFileName , fileSystem ) ;
111+ }
112+ catch ( Exception ex )
113+ {
114+ Logger . WriteWarning ( "Unable to read cache file " + cacheFileName + ", deleting it." ) ;
115+ Logger . WriteInfo ( ex . ToString ( ) ) ;
116+ try
117+ {
118+ this . fileSystem . Delete ( cacheFileName ) ;
119+ }
120+ catch ( Exception deleteEx )
121+ {
122+ Logger . WriteWarning ( string . Format ( "Unable to delete corrupted version cache file {0}. Got {1} exception." , cacheFileName , deleteEx . GetType ( ) . FullName ) ) ;
123+ }
124+ }
125+ }
126+ }
127+ else
128+ {
129+ Logger . WriteInfo ( "Cache file " + cacheFileName + " not found." ) ;
130+ }
131+
132+ if ( vv == null )
133+ {
134+ vv = ExecuteInternal ( targetUrl , dynamicRepositoryLocation , authentication , targetBranch , noFetch , workingDirectory , commitId ) ;
135+ vv . FileName = cacheFileName ;
136+
137+ using ( var stream = fileSystem . OpenWrite ( cacheFileName ) )
138+ {
139+ using ( var sw = new StreamWriter ( stream ) )
140+ {
141+ Dictionary < string , string > dictionary ;
142+ using ( Logger . IndentLog ( "Creating dictionary" ) )
143+ {
144+ dictionary = vv . ToDictionary ( x => x . Key , x => x . Value ) ;
145+ }
146+
147+ using ( Logger . IndentLog ( "Storing version variables to cache file " + cacheFileName ) )
148+ {
149+ var serializer = new Serializer ( ) ;
150+ serializer . Serialize ( sw , dictionary ) ;
151+ }
152+ }
153+ }
154+ }
155+
156+ return vv ;
157+ }
158+ }
159+
160+
161+ VersionVariables ExecuteInternal ( string targetUrl , string dynamicRepositoryLocation , Authentication authentication , string targetBranch , bool noFetch , string workingDirectory , string commitId )
11162 {
12163 // Normalise if we are running on build server
13164 var gitPreparer = new GitPreparer ( targetUrl , dynamicRepositoryLocation , authentication , noFetch , workingDirectory ) ;
@@ -28,7 +179,7 @@ public static VersionVariables ExecuteGitVersion(IFileSystem fileSystem, string
28179 var versionFinder = new GitVersionFinder ( ) ;
29180 var configuration = ConfigurationProvider . Provide ( projectRoot , fileSystem ) ;
30181
31- using ( var repo = fileSystem . GetRepository ( dotGitDirectory ) )
182+ using ( var repo = this . fileSystem . GetRepository ( dotGitDirectory ) )
32183 {
33184 var gitVersionContext = new GitVersionContext ( repo , configuration , commitId : commitId ) ;
34185 var semanticVersion = versionFinder . FindVersion ( gitVersionContext ) ;
@@ -37,19 +188,5 @@ public static VersionVariables ExecuteGitVersion(IFileSystem fileSystem, string
37188
38189 return variables ;
39190 }
40-
41-
42- static string ResolveCurrentBranch ( IBuildServer buildServer , string targetBranch )
43- {
44- if ( buildServer == null )
45- {
46- return targetBranch ;
47- }
48-
49- var currentBranch = buildServer . GetCurrentBranch ( ) ?? targetBranch ;
50- Logger . WriteInfo ( "Branch from build environment: " + currentBranch ) ;
51-
52- return currentBranch ;
53- }
54191 }
55192}
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