-
Notifications
You must be signed in to change notification settings - Fork 6
/
ModuleFast.psm1
2249 lines (1893 loc) · 103 KB
/
ModuleFast.psm1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#requires -version 7.2
using namespace Microsoft.PowerShell.Commands
using namespace NuGet.Versioning
using namespace System.Collections
using namespace System.Collections.Concurrent
using namespace System.Collections.Generic
using namespace System.Collections.Specialized
using namespace System.IO
using namespace System.IO.Compression
using namespace System.IO.Pipelines
using namespace System.Management.Automation
using namespace System.Management.Automation.Language
using namespace System.Net
using namespace System.Net.Http
using namespace System.Reflection
using namespace System.Runtime.Caching
using namespace System.Text
using namespace System.Threading
using namespace System.Threading.Tasks
#Because we are changing state, we want to be safe
#TODO: Implement logic to only fail on module installs, such that one module failure doesn't prevent others from installing.
#Probably need to take into account inconsistent state, such as if a dependent module fails then the depending modules should be removed.
$ErrorActionPreference = 'Stop'
if ($ENV:CI) {
Write-Verbose 'CI Environment Variable is set, this indicates a Continuous Integration System is being used. ModuleFast will suppress prompts by setting ConfirmPreference to None and forcing confirmations to false. This is to ensure that ModuleFast can be used in CI/CD systems without user interaction.'
#Module Scope which should carry to other called commands
$SCRIPT:ConfirmPreference = 'None'
$PSDefaultParameterValues['Install-ModuleFast:Confirm'] = $false
}
#Default Source is PWSH Gallery
$SCRIPT:DefaultSource = 'https://pwsh.gallery/index.json'
#region Public
enum InstallScope {
CurrentUser
AllUsers
}
function Install-ModuleFast {
<#
.SYNOPSIS
High performance, declarative Powershell Module Installer
.DESCRIPTION
ModuleFast is a high performance, declarative PowerShell module installer. It is optimized for speed and written primarily in PowerShell and can be bootstrapped in a single line of code. It is ideal for Continuous Integration/Deployment and serverless scenarios where you want to install modules quickly and without any user interaction. It is inspired by PNPm (https://pnpm.io/) and other high performance declarative package managers.
ModuleFast accepts a variety of familiar PowerShell syntaxes and objects for module specification as well as a custom shorthand syntax allowing complex version requirements to be defined in a single string.
ModuleFast can also install the required modules specified in the #Requires line of a script, or in the RequiredModules section of a module manifest, by simplying providing the path to that file in the -Path parameter (which also accepts remote UNC, http, and https URLs).
---------------------------
Module Specification Syntax
---------------------------
ModuleFast supports a shorthand string syntax for defining module specifications. It generally takes the form of '<Module><Operator><Version>'. The version supports SemVer 2 and prerelease tags.
The available operators are:
- '=': Exact version match. Examples: 'ImportExcel=7.1.0', 'ImportExcel=7.1.0-preview'
- '>': Greater than. Example: 'ImportExcel>7.1.0'
- '>=': Greater than or equal to. Example: 'ImportExcel>=7.1.0'
- '<': Less than. Example: 'ImportExcel<7.1.0'
- '<=': Less than or equal to. Example: 'ImportExcel<=7.1.0'
- '!': A prerelease operator that can be present at the beginning or end of a module name to indicate that prerelease versions are acceptable. Example: 'ImportExcel!', '!ImportExcel'. It can be combined with the other operators like so: 'ImportExcel!>7.1.0'
- ':': Lets you specify a NuGet version range. Example: 'ImportExcel:(7.0.0, 7.2.1-preview]'
For more information about NuGet version range syntax used with the ':' operator: https://learn.microsoft.com/en-us/nuget/concepts/package-versioning#version-ranges. Wilcards are supported with this syntax e.g. 'ImportExcel:3.2.*' will install the latest 3.2.x version.
ModuleFast also fully supports the ModuleSpecification object and hashtable-like string syntaxes that are used by Install-Module and Install-PSResource. More information on this format: https://learn.microsoft.com/en-us/dotnet/api/microsoft.powershell.commands.modulespecification?view=powershellsdk-7.4.0
-------
Logging
-------
Modulefast has extensive Verbose and Debug information available if you specify the -Verbose and/or -Debug parameters. This can be useful for troubleshooting or understanding how ModuleFast is working. Verbose level provides a high level "what" view of the process of module selection, while Debug level provides a much more detailed "Why" information about the module selection and installation process that can be useful in troubleshooting issues.
-----------------
Installation Path
-----------------
ModuleFast will install modules to the default PowerShell module path on non-Windows platforms. On Windows, it will install to %LOCALAPPDATA%\PowerShell\Modules by default as the default Documents PowerShell Modules folder has increasing caused problems due to conflicts with document syncing programs such as OneDrive. You can override this behavior by specifying the -Destination parameter. You can also specify 'CurrentUser' to install to the legacy Documents PowerShell Modules folder on Windows only.
As part of this installation process on Windows, ModuleFast will add the destination to your PSModulePath for the current session. This is done to ensure that the modules are available for use in the current session. If you do not want this behavior, you can specify the -NoPSModulePathUpdate switch.
In addition, if you do not already have the %LOCALAPPDATA%\PowerShell\Modules in your $env:PSModulesPath, Modulefast will append a command to add it to your user profile. This is done to ensure that the modules are available for use in future sessions. If you do not want this behavior, you can specify the -NoProfileUpdate switch.
-------
Caching
-------
ModuleFast will cache the results of the module selection process in memory for the duration of the PowerShell session. This is done to improve performance when multiple modules are being installed. If you want to clear the cache, you can call Clear-ModuleFastCache.
.PARAMETER WhatIf
Outputs the installation plan of modules not already available and needing to be installed to the pipeline as well as the console. This can be saved and provided to Install-ModuleFast at a later date.
.EXAMPLE
Install-ModuleFast 'ImportExcel' -PassThru
Installs the latest version of ImportExcel and outputs info about the installed modules. Remove -PassThru for a quieter installation, or add -Verbose or -Debug for even more information.
--- RESULT ---
Name ModuleVersion
---- -------------
ImportExcel 7.8.6
.EXAMPLE
Install-ModuleFast 'ImportExcel','VMware.PowerCLI.Sdk=12.6.0.19600125','PowerConfig<0.1.6','Az.Compute:7.1.*' -WhatIf
Prepares an install plan for the latest version of ImportExcel, a specific version of VMware.PowerCLI.Sdk, a version of PowerConfig less than 0.1.6, and the latest version of Az.Compute that is in the 7.1.x range.
--- RESULT ---
Name ModuleVersion
---- -------------
VMware.PowerCLI.Sdk 12.6.0.19600125
ImportExcel 7.8.6
PowerConfig 0.1.5
Az.Compute 7.1.0
VMware.PowerCLI.Sdk.Types 12.6.0.19600125
Az.Accounts 2.13.2
.EXAMPLE
'ImportExcel','VMware.PowerCLI.Sdk=12.6.0.19600125','PowerConfig<0.1.6','Az.Compute:7.1.*' | Install-ModuleFast -WhatIf
Same as the previous example, but using the pipeline to provide the module specifications.
--- RESULT ---
Name ModuleVersion
---- -------------
VMware.PowerCLI.Sdk 12.6.0.19600125
ImportExcel 7.8.6
PowerConfig 0.1.5
Az.Compute 7.1.0
VMware.PowerCLI.Sdk.Types 12.6.0.19600125
Az.Accounts 2.13.2
.EXAMPLE
$plan = Install-ModuleFast 'ImportExcel' -WhatIf
$plan | Install-ModuleFast
Stores an Install Plan for ImportExcel in the $plan variable, then installs it. The later install can be done later, and the $plan objects are serializable to CLIXML/JSON/etc. for storage.
--- RESULT ---
What if: Performing the operation "Install 1 Modules" on target "C:\Users\JGrote\AppData\Local\powershell\Modules". Name ModuleVersion
Name ModuleVersion
---- -------------
ImportExcel 7.8.6
.EXAMPLE
@{ModuleName='ImportExcel';ModuleVersion='7.8.6'} | Install-ModuleFast
Installs a specific version of ImportExcel using
.EXAMPLE
Install-ModuleFast 'ImportExcel' -Destination 'CurrentUser'
Installs ImportExcel to the legacy PowerShell Modules folder in My Documents on Windows only, but does not update the PSModulePath or the user profile to include the new module path. This behavior is similar to Install-Module or Install-PSResource.
.EXAMPLE
Install-ModuleFast -Path 'path\to\RequiresScript.ps1' -WhatIf
Prepares a plan to install the dependencies defined in the #Requires statement of a script if a .ps1 is specified, the #Requires statement of a module if .psm1 is specified, or the RequiredModules section of a .psd1 file if it is a PowerShell Module Manifest. This is useful for quickly installing dependencies for scripts or modules.
RequiresScript.ps1 Contents:
#Requires -Module PreReleaseTest
--- RESULT ---
What if: Performing the operation "Install 1 Modules" on target "C:\Users\JGrote\AppData\Local\powershell\Modules".
Name ModuleVersion
---- -------------
PrereleaseTest 0.0.1
.EXAMPLE
Install-ModuleFast -WhatIf
If no Specification or Path parameter is provided, ModuleFast will search for a .requires.json or a .requires.psd1 file in the current directory and install the modules specified in that file. This is useful for quickly installing dependencies for scripts or modules during a CI build or Github Action.
Note that for this format you can explicitly specify 'latest' or ':*' as the version to install the latest version of a module.
Module.requires.psd1 Contents:
@{
ImportExcel = 'latest'
'VMware.PowerCLI.Sdk' = '>=12.6.0.19600125'
}
--- RESULT ---
Name ModuleVersion
---- -------------
ImportExcel 7.8.6
VMware.PowerCLI.Sdk 12.6.0.19600125
VMware.PowerCLI.Sdk.Types 12.6.0.19600125
.EXAMPLE
Install-ModuleFast 'ImportExcel' -CI #This will write a lockfile to the current directory
Install-ModuleFast -CI #This will use the previously created lockfile to install same state as above.
If the -CI switch is specified, ModuleFast will write a lockfile to the current directory indicating all modules that were installed. This lockfile will contain the exact versions of the modules that were installed. If the lockfile is present in the future, ModuleFast will only install the versions specified in the lockfile, which is useful for reproducing CI builds even if newer versions of modules are releases that match the initial specification.
For instance, the above will install the latest version of ImportExcel (7.8.6 as of this writing) but will not install newer while modulefast is in this directory until the lockfile is removed or replaced.
#>
[CmdletBinding(SupportsShouldProcess, DefaultParameterSetName = 'Specification')]
param(
#The module(s) to install. This can be a string, a ModuleSpecification, a hashtable with nuget version style (e.g. @{Name='test';Version='1.0'}), a hashtable with ModuleSpecification style (e.g. @{Name='test';RequiredVersion='1.0'}),
[Alias('Name')]
[Alias('ModuleToInstall')]
[Alias('ModulesToInstall')]
[AllowNull()]
[AllowEmptyCollection()]
[Parameter(Position = 0, ValueFromPipeline, ParameterSetName = 'Specification')][ModuleFastSpec[]]$Specification,
#Provide a required module specification path to install from. This can be a local psd1/json file, or a remote URL with a psd1/json file in supported manifest formats, or a .ps1/.psm1 file with a #Requires statement.
[Parameter(Mandatory, ParameterSetName = 'Path')][string]$Path,
#Explicitly specify the type of SpecFile to use. ModuleFast has some limited autodetection capability for ModuleBuilder and PSDepend formats, you should use this parameter if they explicitly fail. This is ignored if the file is not a .psd1 file.
[Parameter(ParameterSetName = 'Path')][SpecFileType]$SpecFileType = [SpecFileType]::AutoDetect,
#Where to install the modules. This defaults to the builtin module path on non-windows and a custom LOCALAPPDATA location on Windows. You can also specify 'CurrentUser' to install to the Documents folder on Windows Only (this is not recommended)
[string]$Destination,
#The repository to scan for modules. TODO: Multi-repo support
[string]$Source = $SCRIPT:DefaultSource,
#The credential to use to authenticate. Only basic auth is supported
[PSCredential]$Credential,
#By default will modify your PSModulePath to use the builtin destination if not present. Setting this implicitly skips profile update as well.
[Switch]$NoPSModulePathUpdate,
#Setting this won't add the default destination to your powershell.config.json. This really only matters on Windows.
[Switch]$NoProfileUpdate,
#Setting this will check for newer modules if your installed modules are not already at the upper bound of the required version range. Note that specifying this will also clear the local request cache for remote repositories which will result in slower evaluations if the information has not changed.
[Switch]$Update,
#Prerelease packages will be included in ModuleFast evaluation. If a non-prerelease package has a prerelease dependency, that dependency will be included regardless of this setting. If this setting is specified, all packages will be evaluated for prereleases regardless of if they have a prerelease indicator such as '!' in their specification name, but will still be subject to specification version constraints that would prevent a prerelease from installing.
[Switch]$Prerelease,
#Using the CI switch will write a lockfile to the current folder. If this file is present and -CI is specified in the future, ModuleFast will only install the versions specified in the lockfile, which is useful for reproducing CI builds even if newer versions of software come out.
[Switch]$CI,
#Only consider the specified destination and not any other paths currently in the PSModulePath. This is useful for CI scenarios where you want to ensure that the modules are installed in a specific location.
[Switch]$DestinationOnly,
#How many concurrent installation threads to run. Each installation thread, given sufficient bandwidth, will likely saturate a full CPU core with decompression work. This defaults to the number of logical cores on the system. If your system uses HyperThreading and presents more logical cores than physical cores available, you may want to set this to half your number of logical cores for best performance.
[int]$ThrottleLimit = [Environment]::ProcessorCount,
#The path to the lockfile. By default it is requires.lock.json in the current folder. This is ignored if -CI parameter is not present. It is generally not recommended to change this setting.
[string]$CILockFilePath = $(Join-Path $PWD 'requires.lock.json'),
#A list of ModuleFastInfo objects to install. This parameterset is used when passing a plan to ModuleFast via the pipeline and is generally not used directly.
[Parameter(Mandatory, ValueFromPipeline, ParameterSetName = 'ModuleFastInfo')][ModuleFastInfo[]]$ModuleFastInfo,
#Outputs the installation plan of modules not already available and needing to be installed to the pipeline as well as the console. This can be saved and provided to Install-ModuleFast at a later date. This is functionally the same as -WhatIf but without the additional WhatIf Output
[Switch]$Plan,
#This will output the resulting modules that were installed.
[Switch]$PassThru,
#Setting this to "CurrentUser" is the same as specifying the destination as 'Current'. This is a usability convenience.
[InstallScope]$Scope,
#The timeout for HTTP requests. This is set to 30 seconds by default. This is generally sufficient for most requests, but you may need to increase this if you are on a slow connection or are downloading large modules.
[int]$Timeout = 30
)
begin {
trap {$PSCmdlet.ThrowTerminatingError($PSItem)}
#Clear the ModuleFastCache if -Update is specified to ensure fresh lookups of remote module availability
if ($Update) {
Clear-ModuleFastCache
}
#Cleanup that allows for shorthand such as pwsh.gallery
[Uri]$srcTest = $Source
if ($srcTest.Scheme -notin 'http', 'https') {
Write-Debug "Appending https and index.json to $Source"
$Source = "https://$Source/index.json"
}
$defaultRepoPath = $(Join-Path ([Environment]::GetFolderPath('LocalApplicationData')) 'powershell/Modules')
if (-not $Destination) {
#Special function that will retrieve the default module path for the current user
$Destination = Get-PSDefaultModulePath -AllUsers:($Scope -eq 'AllUsers')
#Special case for Windows to avoid the default installation path because it has issues with OneDrive
$defaultWindowsModulePath = $isWindows ? (Join-Path ([Environment]::GetFolderPath('MyDocuments')) 'PowerShell/Modules') : 'XXX___NOTSUPPORTED'
if ($IsWindows -and $Destination -eq $defaultWindowsModulePath -and $Scope -ne 'CurrentUser') {
Write-Debug "Windows Documents module folder detected. Changing to $defaultRepoPath"
$Destination = $defaultRepoPath
}
}
if (-not $Destination) {
throw 'Failed to determine destination path. This is a bug, please report it, it should always have something by this point.'
}
# Require approval to create the destination folder if it is not our default path, otherwise this is automatic
if (-not (Test-Path $Destination)) {
if ($configRepoPath -or
$Destination -eq $defaultRepoPath -or
(Approve-Action 'Create Destination Folder' $Destination)
) {
New-Item -ItemType Directory -Path $Destination -Force | Out-Null
}
}
$Destination = Resolve-Path $Destination
if (-not $NoPSModulePathUpdate) {
# Get the current PSModulePath
$PSModulePaths = $env:PSModulePath.Split([Path]::PathSeparator, [StringSplitOptions]::RemoveEmptyEntries)
#Only update if the module path is not already in the PSModulePath
if ($Destination -notin $PSModulePaths) {
Add-DestinationToPSModulePath -Destination $Destination -NoProfileUpdate:$NoProfileUpdate -Confirm:$Confirm
}
}
#We want to maintain a single HttpClient for the life of the module. This isn't as big of a deal as it used to be but
#it is still a best practice.
if (-not $SCRIPT:__ModuleFastHttpClient -or $Source -ne $SCRIPT:__ModuleFastHttpClient.BaseAddress) {
$SCRIPT:__ModuleFastHttpClient = New-ModuleFastClient -Credential $Credential -Timeout $Timeout
if (-not $SCRIPT:__ModuleFastHttpClient) {
throw 'Failed to create ModuleFast HTTPClient. This is a bug'
}
}
$httpClient = $SCRIPT:__ModuleFastHttpClient
$cancelSource = [CancellationTokenSource]::new()
$cancelSource.CancelAfter([TimeSpan]::FromSeconds($Timeout))
[HashSet[ModuleFastSpec]]$ModulesToInstall = @()
[List[ModuleFastInfo]]$installPlan = @()
}
process {
#We initialize and type the container list here because there is a bug where the ParameterSet is not correct in the begin block if the pipeline is used. Null conditional keeps it from being reinitialized
switch ($PSCmdlet.ParameterSetName) {
'Specification' {
foreach ($ModuleToInstall in $Specification) {
$isDuplicate = -not $ModulesToInstall.Add($ModuleToInstall)
if ($isDuplicate) {
Write-Warning "$ModuleToInstall was specified twice, skipping duplicate"
}
}
break
}
'ModuleFastInfo' {
foreach ($info in $ModuleFastInfo) {
$installPlan.Add($info)
}
break
}
'Path' {
$Paths = @()
#Search for a spec file if a directory was provided
if ('Directory' -in (Get-Item $Path).Attributes) {
$Paths += Find-RequiredSpecFile -Path $Path
} else {
$Paths = $Path
}
foreach ($pathItem in $Paths) {
$ModulesToInstall = ConvertFrom-RequiredSpec -RequiredSpecPath $pathItem -SpecFileType $SpecFileType
}
}
}
}
end {
trap {$PSCmdlet.ThrowTerminatingError($PSItem)}
try {
if (-not $installPlan) {
if ($ModulesToInstall.Count -eq 0 -and $PSCmdlet.ParameterSetName -eq 'Specification') {
Write-Verbose '🔎 No modules specified to install. Beginning SpecFile detection...'
$modulesToInstall = if ($CI -and (Test-Path $CILockFilePath)) {
Write-Debug "Found lockfile at $CILockFilePath. Using for specification evaluation and ignoring all others."
ConvertFrom-RequiredSpec -RequiredSpecPath $CILockFilePath -SpecFileType $SpecFileType
if ($Update) {
Write-Verbose "-Update was specified but a lockfile was found. Ignoring -Update and using lockfile specification."
$Update = $false
}
} else {
$specFiles = Find-RequiredSpecFile $PWD -CILockFileHint $CILockFilePath
if (-not $specFiles) {
Write-Warning "No specfiles found in $PWD. Please ensure you have a .requires.json or .requires.psd1 file in the current directory, specify a path with -Path, or define specifications with the -Specification parameter to skip this search."
}
foreach ($specfile in $specFiles) {
Write-Verbose "Found Specfile $specFile. Evaluating..."
ConvertFrom-RequiredSpec -RequiredSpecPath $specFile -SpecFileType $SpecFileType
}
}
}
if (-not $ModulesToInstall) {
throw [InvalidDataException]'No modules specifications found to evaluate.'
}
#If we do not have an explicit implementation plan, fetch it
#This is done so that Get-ModuleFastPlan | Install-ModuleFastPlan and Install-ModuleFastPlan have the same flow.
[ModuleFastInfo[]]$installPlan = if ($PSCmdlet.ParameterSetName -eq 'ModuleFastInfo') {
$ModulesToInstall.ToArray()
} else {
Write-Progress -Id 1 -Activity 'Install-ModuleFast' -Status 'Plan' -PercentComplete 1
Get-ModuleFastPlan -Specification $ModulesToInstall -HttpClient $httpClient -Source $Source -Update:$Update -PreRelease:$Prerelease.IsPresent -DestinationOnly:$DestinationOnly -Destination $Destination -Timeout $Timeout
}
}
if ($installPlan.Count -eq 0) {
$planAlreadySatisfiedMessage = "`u{2705} $($ModulesToInstall.count) Module Specifications have all been satisfied by installed modules. If you would like to check for newer versions remotely, specify -Update"
if ($WhatIfPreference) {
Write-Host -fore DarkGreen $planAlreadySatisfiedMessage
} else {
Write-Verbose $planAlreadySatisfiedMessage
}
return
}
#Unless Plan was specified, run the process (WhatIf will also short circuit).
#Plan is specified first so that WhatIf message will only show if Plan is not specified due to -or short circuit logic.
if ($Plan -or -not (Approve-Action $Destination "Install $($installPlan.Count) Modules")) {
if ($Plan) {
Write-Verbose "📑 -Plan was specified. Returning a plan including $($installPlan.Count) Module Specifications"
}
#TODO: Separate planned installs and dependencies. Can probably do this with a dependency flag on the ModuleInfo item and some custom formatting.
Write-Output $installPlan
} else {
Write-Progress -Id 1 -Activity 'Install-ModuleFast' -Status "Installing: $($installPlan.count) Modules" -PercentComplete 50
$installHelperParams = @{
ModuleToInstall = $installPlan
Destination = $Destination
CancellationToken = $cancelSource.Token
HttpClient = $httpClient
Update = $Update -or $PSCmdlet.ParameterSetName -eq 'ModuleFastInfo'
ThrottleLimit = $ThrottleLimit
}
$installedModules = Install-ModuleFastHelper @installHelperParams
Write-Progress -Id 1 -Activity 'Install-ModuleFast' -Completed
Write-Verbose "`u{2705} All required modules installed! Exiting."
if ($PassThru) {
Write-Output $installedModules
}
}
if ($CI) {
#FIXME: If a package was already installed, it doesn't show up in this lockfile.
Write-Verbose "Writing lockfile to $CILockFilePath"
[Dictionary[string, string]]$lockFile = @{}
$installPlan
| ForEach-Object {
$lockFile.Add($PSItem.Name, $PSItem.ModuleVersion)
}
$lockFile
| ConvertTo-Json -Depth 2
| Out-File -FilePath $CILockFilePath -Encoding UTF8
}
} finally {
$cancelSource.Dispose()
}
}
}
function New-ModuleFastClient {
param(
[PSCredential]$Credential,
[int]$Timeout = 30
)
Write-Debug 'Creating new ModuleFast HTTP Client. This should only happen once!'
$ErrorActionPreference = 'Stop'
#SocketsHttpHandler is the modern .NET 5+ default handler for HttpClient.
$httpHandler = [SocketsHttpHandler]@{
#The max connections are only in case we end up using HTTP/1.1 instead of HTTP/2 for whatever reason. HTTP/2 will only use one connection (but multiple streams) per the spec unless EnableMultipleHttp2Connections is specified
MaxConnectionsPerServer = 10
#Reduce the amount of round trip confirmations by setting window size to 64MB. ModuleFast should primarily be used on reliable fast connections. Dynamic scaling will reduce this if needed.
InitialHttp2StreamWindowSize = 16777216
AutomaticDecompression = 'All'
}
$httpClient = [HttpClient]::new($httpHandler)
$httpClient.BaseAddress = $Source
#When in parallel some operations may take a significant amount of time to return
$httpClient.Timeout = [TimeSpan]::FromSeconds($Timeout)
#If a credential was provided, use it as a basic auth credential
if ($Credential) {
$httpClient.DefaultRequestHeaders.Authorization = ConvertTo-AuthenticationHeaderValue $Credential
}
#This user agent is important, it indicates to pwsh.gallery that we want dependency-only metadata
#TODO: Do this with a custom header instead
$userHeaderAdded = $httpClient.DefaultRequestHeaders.UserAgent.TryParseAdd('ModuleFast (github.com/JustinGrote/ModuleFast)')
if (-not $userHeaderAdded) {
throw 'Failed to add User-Agent header to HttpClient. This is a bug'
}
#This will multiplex all queries over a single connection, minimizing TLS setup overhead
#Should also support HTTP/3 on newest PS versions
$httpClient.DefaultVersionPolicy = [HttpVersionPolicy]::RequestVersionOrHigher
#This should enable HTTP/3 on Win11 22H2+ (or linux with http3 library) and PS 7.2+
[void][AppContext]::SetSwitch('System.Net.SocketsHttpHandler.Http3Support', $true)
return $httpClient
}
function Get-ModuleFastPlan {
<#
.NOTES
THIS COMMAND IS DEPRECATED AND WILL NOT RECEIVE PARAMETER UPDATES. Please use Install-ModuleFast -Plan instead.
#>
[CmdletBinding()]
[OutputType([ModuleFastInfo[]])]
param(
#The module(s) to install. This can be a string, a ModuleSpecification, a hashtable with nuget version style (e.g. @{Name='test';Version='1.0'}), a hashtable with ModuleSpecification style (e.g. @{Name='test';RequiredVersion='1.0'}),
[Alias('Name')]
[Parameter(Position = 0, Mandatory, ValueFromPipeline)][ModuleFastSpec[]]$Specification,
#The repository to scan for modules. TODO: Multi-repo support
[string]$Source = 'https://pwsh.gallery/index.json',
#Whether to include prerelease modules in the request
[Switch]$Prerelease,
#By default we use in-place modules if they satisfy the version requirements. This switch will force a search for all latest modules
[Switch]$Update,
[PSCredential]$Credential,
[int]$Timeout = 30,
[HttpClient]$HttpClient = $(New-ModuleFastClient -Credential $Credential -Timeout $Timeout),
[int]$ParentProgress,
[string]$Destination,
[switch]$DestinationOnly,
[CancellationToken]$CancellationToken
)
BEGIN {
trap {$PSCmdlet.ThrowTerminatingError($PSItem)}
$ErrorActionPreference = 'Stop'
[HashSet[ModuleFastSpec]]$modulesToResolve = @()
#We use this token to cancel the HTTP requests if the user hits ctrl-C without having to dispose of the HttpClient.
#We get a child so that a cancellation here does not affect any upstream commands
$cancelTokenSource = $CancellationToken ? [CancellationTokenSource]::CreateLinkedTokenSource($CancellationToken) : [CancellationTokenSource]::new()
$CancellationToken = $cancelTokenSource.Token
#We pass this splat to all our HTTP requests to cut down on boilerplate
$httpContext = @{
HttpClient = $httpClient
CancellationToken = $CancellationToken
}
}
PROCESS {
trap {$PSCmdlet.ThrowTerminatingError($PSItem)}
foreach ($spec in $Specification) {
if (-not $ModulesToResolve.Add($spec)) {
Write-Warning "$spec was specified twice, skipping duplicate"
}
}
}
END {
trap {$PSCmdlet.ThrowTerminatingError($PSItem)}
try {
# A deduplicated list of modules to install
[HashSet[ModuleFastInfo]]$modulesToInstall = @{}
# We use this as a fast lookup table for the context of the request
[Dictionary[Task, ModuleFastSpec]]$taskSpecMap = @{}
#We use this to track the tasks that are currently running
#We dont need this to be ConcurrentList because we only manipulate it in the "main" runspace.
[List[Task]]$currentTasks = @()
#This is used to track the highest candidate if -Update was specified to force a remote lookup. If the candidate is still the most valid after remote lookup we can skip it without hitting disk to read the manifest again.
[Dictionary[ModuleFastSpec, ModuleFastInfo]]$bestLocalCandidate = @{}
foreach ($moduleSpec in $ModulesToResolve) {
Write-Verbose "${moduleSpec}: Evaluating Module Specification"
$findLocalParams = @{
Update = $Update
BestCandidate = ([ref]$bestLocalCandidate)
}
if ($DestinationOnly) { $findLocalParams.ModulePaths = $Destination }
[ModuleFastInfo]$localMatch = Find-LocalModule @findLocalParams $moduleSpec
if ($localMatch) {
Write-Debug "${localMatch}: 🎯 FOUND satisfying version $($localMatch.ModuleVersion) at $($localMatch.Location). Skipping remote search."
#TODO: Capture this somewhere that we can use it to report in the deploy plan
continue
}
#If we get this far, we didn't find a manifest in this module path
Write-Debug "${moduleSpec}: 🔍 No installed versions matched the spec. Will check remotely."
$task = Get-ModuleInfoAsync @httpContext -Endpoint $Source -Name $moduleSpec.Name
$taskSpecMap[$task] = $moduleSpec
$currentTasks.Add($task)
}
[int]$tasksCompleteCount = 1
[int]$resolveTaskCount = $currentTasks.Count -as [Int]
do {
#The timeout here allow ctrl-C to continue working in PowerShell
#-1 is returned by WaitAny if we hit the timeout before any tasks completed
$noTasksYetCompleted = -1
[int]$thisTaskIndex = [Task]::WaitAny($currentTasks, 500)
if ($thisTaskIndex -eq $noTasksYetCompleted) { continue }
#The Plan whitespace is intentional so that it lines up with install progress using the compact format
Write-Progress -Id 1 -Activity 'Install-ModuleFast' -Status "Plan: Resolving $tasksCompleteCount/$resolveTaskCount Module Dependencies" -PercentComplete ((($tasksCompleteCount / $resolveTaskCount) * 50) + 1)
#TODO: This only indicates headers were received, content may still be downloading and we dont want to block on that.
#For now the content is small but this could be faster if we have another inner loop that WaitAny's on content
#TODO: Perform a HEAD query to see if something has changed
$completedTask = $currentTasks[$thisTaskIndex]
[ModuleFastSpec]$currentModuleSpec = $taskSpecMap[$completedTask]
if (-not $currentModuleSpec) {
throw 'Failed to find Module Specification for completed task. This is a bug.'
}
if ($currentModuleSpec.Guid -ne [Guid]::Empty) {
Write-Warning "${currentModuleSpec}: A GUID constraint was found in the module spec. ModuleSpec will currently only verify GUIDs after the module has been installed, so a plan may not be accurate. It is not recommended to match modules by GUID in ModuleFast, but instead verify package signatures for full package authenticity."
}
Write-Debug "${currentModuleSpec}: Processing Response"
# We use GetAwaiter so we get proper error messages back, as things such as network errors might occur here.
try {
$response = $completedTask.GetAwaiter().GetResult()
| ConvertFrom-Json
Write-Debug "${currentModuleSpec}: Received Response with $($response.Count) pages"
} catch {
$taskException = $PSItem.Exception.InnerException
#TODO: Rewrite this as a handle filter
if ($taskException -isnot [HttpRequestException]) { throw }
[HttpRequestException]$err = $taskException
if ($err.StatusCode -eq [HttpStatusCode]::NotFound) {
throw [InvalidOperationException]"${currentModuleSpec}: module was not found in the $Source repository. Check the spelling and try again."
}
#All other cases
$PSItem.ErrorDetails = "${currentModuleSpec}: Failed to fetch module $currentModuleSpec from $Source. Error: $PSItem"
throw $PSItem
}
if (-not $response.count) {
throw [InvalidDataException]"${currentModuleSpec}: invalid result received from $Source. This is probably a bug. Content: $response"
}
#If what we are looking for exists in the response, we can stop looking
#TODO: Type the responses and check on the type, not the existence of a property.
#TODO: This needs to be moved to a function so it isn't duplicated down in the "else" section below
$pageLeaves = $response.items.items
$pageLeaves | ForEach-Object {
if ($PSItem.packageContent -and -not $PSItem.catalogEntry.packagecontent) {
$PSItem.catalogEntry
| Add-Member -NotePropertyName 'PackageContent' -NotePropertyValue $PSItem.packageContent
}
}
$entries = $pageLeaves.catalogEntry
#Get the highest version that satisfies the requirement in the inlined index, if possible
$selectedEntry = if ($entries) {
#Sanity Check for Modules
if ('ItemType:Script' -in $entries[0].tags) {
throw [NotImplementedException]"${currentModuleSpec}: Script installations are currently not supported."
}
[SortedSet[NuGetVersion]]$inlinedVersions = $entries.version
foreach ($candidate in $inlinedVersions.Reverse()) {
#Skip Prereleases unless explicitly requested
if (($candidate.IsPrerelease -or $candidate.HasMetadata) -and -not ($currentModuleSpec.PreRelease -or $Prerelease)) {
Write-Debug "${moduleSpec}: skipping candidate $candidate because it is a prerelease and prerelease was not specified either with the -Prerelease parameter, by specifying a prerelease version in the spec, or adding a ! on the module name spec to indicate prerelease is acceptable."
continue
}
if ($currentModuleSpec.SatisfiedBy($candidate)) {
Write-Debug "${ModuleSpec}: Found satisfying version $candidate in the inlined index."
$matchingEntry = $entries | Where-Object version -EQ $candidate
if ($matchingEntry.count -gt 1) { throw 'Multiple matching Entries found for a specific version. This is a bug and should not happen' }
$matchingEntry
break
}
}
}
if ($selectedEntry.count -gt 1) { throw 'Multiple Entries Selected. This is a bug.' }
#Search additional pages if we didn't find it in the inlined ones
$selectedEntry ??= $(
Write-Debug "${currentModuleSpec}: not found in inlined index. Determining appropriate page(s) to query"
#If not inlined, we need to find what page(s) might have the candidate info we are looking for, starting with the highest numbered page first
$pages = $response.items
| Where-Object { -not $PSItem.items } #Get non-inlined pages
| Where-Object {
[VersionRange]$pageRange = [VersionRange]::new($PSItem.Lower, $true, $PSItem.Upper, $true, $null, $null)
return $currentModuleSpec.Overlap($pageRange)
}
| Sort-Object -Descending { [NuGetVersion]$PSItem.Upper }
if (-not $pages) {
throw [InvalidOperationException]"${currentModuleSpec}: a matching module was not found in the $Source repository that satisfies the requested version constraints. You may need to specify -PreRelease or adjust your version constraints."
}
Write-Debug "${currentModuleSpec}: Found $(@($pages).Count) additional pages that might match the query: $($pages.'@id' -join ',')"
#TODO: This is relatively slow and blocking, but we would need complicated logic to process it in the main task handler loop.
#I really should make a pipeline that breaks off tasks based on the type of the response.
#This should be a relatively rare query that only happens when the latest package isn't being resolved.
#Start with the highest potentially matching page and work our way down until we find a match.
foreach ($page in $pages) {
$response = (Get-ModuleInfoAsync @httpContext -Uri $page.'@id').GetAwaiter().GetResult() | ConvertFrom-Json
$pageLeaves = $response.items | ForEach-Object {
if ($PSItem.packageContent -and -not $PSItem.catalogEntry.packagecontent) {
$PSItem.catalogEntry
| Add-Member -NotePropertyName 'PackageContent' -NotePropertyValue $PSItem.packageContent
}
$PSItem
}
$entries = $pageLeaves.catalogEntry
#TODO: Dedupe as a function with above
if ($entries) {
[SortedSet[NuGetVersion]]$pageVersions = $entries.version
foreach ($candidate in $pageVersions.Reverse()) {
#Skip Prereleases unless explicitly requested
if (($candidate.IsPrerelease -or $candidate.HasMetadata) -and -not ($currentModuleSpec.PreRelease -or $Prerelease)) {
Write-Debug "Skipping candidate $candidate because it is a prerelease and prerelease was not specified either with the -Prerelease parameter or with a ! on the module name."
continue
}
if ($currentModuleSpec.SatisfiedBy($candidate)) {
Write-Debug "${currentModuleSpec}: Found satisfying version $candidate in the additional pages."
$matchingEntry = $entries | Where-Object version -EQ $candidate
if (-not $matchingEntry) { throw 'Multiple matching Entries found for a specific version. This is a bug and should not happen' }
$matchingEntry
break
}
}
}
#Candidate found, no need to process additional pages
if ($matchingEntry) { break }
}
)
if (-not $selectedEntry) {
throw [InvalidOperationException]"${currentModuleSpec}: a matching module was not found in the $Source repository that satisfies the version constraints. You may need to specify -PreRelease or adjust your version constraints."
}
if (-not $selectedEntry.PackageContent) { throw "No package location found for $($selectedEntry.PackageContent). This should never happen and is a bug" }
[ModuleFastInfo]$selectedModule = [ModuleFastInfo]::new(
$selectedEntry.id,
$selectedEntry.version,
$selectedEntry.PackageContent
)
if ($moduleSpec.Guid -and $moduleSpec.Guid -ne [Guid]::Empty) {
$selectedModule.Guid = $moduleSpec.Guid
}
#If -Update was specified, we need to re-check that none of the selected modules are already installed.
#TODO: Persist state of the local modules found to this point so we don't have to recheck.
if ($Update -and $bestLocalCandidate[$currentModuleSpec].ModuleVersion -eq $selectedModule.ModuleVersion) {
Write-Debug "${selectedModule}: ✅ -Update was specified and the best remote candidate matches what is locally installed, so we can skip this module."
#TODO: Fix the flow so this isn't stated twice
[void]$taskSpecMap.Remove($completedTask)
[void]$currentTasks.Remove($completedTask)
$tasksCompleteCount++
continue
}
#Check if we have already processed this item and move on if we have
if (-not $modulesToInstall.Add($selectedModule)) {
Write-Debug "$selectedModule already exists in the install plan. Skipping..."
#TODO: Fix the flow so this isn't stated twice
[void]$taskSpecMap.Remove($completedTask)
[void]$currentTasks.Remove($completedTask)
$tasksCompleteCount++
continue
}
Write-Verbose "${selectedModule}: Added to install plan"
# HACK: Pwsh doesn't care about target framework as of today so we can skip that evaluation
# TODO: Should it? Should we check for the target framework and only install if it matches?
$dependencyInfo = $selectedEntry.dependencyGroups.dependencies
#Determine dependencies and add them to the pending tasks
if ($dependencyInfo) {
# HACK: I should be using the Id provided by the server, for now I'm just guessing because
# I need to add it to the ComparableModuleSpec class
[List[ModuleFastSpec]]$dependencies = $dependencyInfo | ForEach-Object {
# Handle rare cases where range is not specified in the dependency
[VersionRange]$range = [string]::IsNullOrWhiteSpace($PSItem.range) ?
[VersionRange]::new() :
[VersionRange]::Parse($PSItem.range)
[ModuleFastSpec]::new($PSItem.id, $range)
}
Write-Debug "${currentModuleSpec}: has $($dependencies.count) additional dependencies: $($dependencies -join ', ')"
# TODO: Where loop filter maybe
[ModuleFastSpec[]]$dependenciesToResolve = $dependencies | Where-Object {
$dependency = $PSItem
# TODO: This dependency resolution logic should be a separate function
# Maybe ModulesToInstall should be nested/grouped by Module Name then version to speed this up, as it currently
# enumerates every time which shouldn't be a big deal for small dependency trees but might be a
# meaninful performance difference on a whole-system upgrade.
[HashSet[string]]$moduleNames = $modulesToInstall.Name
if ($dependency.Name -notin $ModuleNames) {
Write-Debug "$($dependency.Name): No modules with this name currently exist in the install plan. Resolving dependency..."
return $true
}
$modulesToInstall
| Where-Object Name -EQ $dependency.Name
| Sort-Object ModuleVersion -Descending
| ForEach-Object {
if ($dependency.SatisfiedBy($PSItem.ModuleVersion)) {
Write-Debug "Dependency $dependency satisfied by existing planned install item $PSItem"
return $false
}
}
Write-Debug "Dependency $($dependency.Name) is not satisfied by any existing planned install items. Resolving dependency..."
return $true
}
if (-not $dependenciesToResolve) {
Write-Debug "$moduleSpec has no remaining dependencies that need resolving"
continue
}
Write-Debug "Fetching info on remaining $($dependenciesToResolve.count) dependencies"
# We do this here rather than populate modulesToResolve because the tasks wont start until all the existing tasks complete
# TODO: Figure out a way to dedupe this logic maybe recursively but I guess a function would be fine too
foreach ($dependencySpec in $dependenciesToResolve) {
$findLocalParams = @{
Update = $Update
BestCandidate = ([ref]$bestLocalCandidate)
}
if ($DestinationOnly) { $findLocalParams.ModulePaths = $Destination }
[ModuleFastInfo]$localMatch = Find-LocalModule @findLocalParams $dependencySpec
if ($localMatch) {
Write-Debug "FOUND local module $($localMatch.Name) $($localMatch.ModuleVersion) at $($localMatch.Location.AbsolutePath) that satisfies $moduleSpec. Skipping..."
#TODO: Capture this somewhere that we can use it to report in the deploy plan
continue
} else {
Write-Debug "No local modules that satisfies dependency $dependencySpec. Checking Remote..."
}
Write-Debug "${currentModuleSpec}: Fetching dependency $dependencySpec"
#TODO: Do a direct version lookup if the dependency is a required version
$task = Get-ModuleInfoAsync @httpContext -Endpoint $Source -Name $dependencySpec.Name
$taskSpecMap[$task] = $dependencySpec
#Used to track progress as tasks can get removed
$resolveTaskCount++
$currentTasks.Add($task)
}
}
#Putting .NET methods in a try/catch makes errors in them terminating
try {
[void]$taskSpecMap.Remove($completedTask)
[void]$currentTasks.Remove($completedTask)
$tasksCompleteCount++
} catch {
throw
}
} while ($currentTasks.count -gt 0)
if ($modulesToInstall) { return $modulesToInstall }
} finally {
#Cancel any outstanding tasks if unexpected error occurs
$cancelTokenSource.Dispose()
}
}
}
function Clear-ModuleFastCache {
<#
.SYNOPSIS
Clears the ModuleFast HTTP Cache. This is useful if you are expecting a newer version of a module to be available.
#>
Write-Debug "Flushing ModuleFast Request Cache"
$SCRIPT:RequestCache.Dispose()
$SCRIPT:RequestCache = [MemoryCache]::new('PowerShell-ModuleFast-RequestCache')
}
#endregion Public
#region Private
function Install-ModuleFastHelper {
[CmdletBinding()]
param(
[Parameter(Mandatory)][ModuleFastInfo[]]$ModuleToInstall,
[string]$Destination,
[Parameter(Mandatory)][CancellationToken]$CancellationToken,
[HttpClient]$HttpClient,
[switch]$Update,
[int]$ThrottleLimit,
[int]$Timeout = 30
)
BEGIN {
#We use this token to cancel the HTTP requests if the user hits ctrl-C without having to dispose of the HttpClient.
#We get a child so that a cancellation here does not affect any upstream commands
$cancelTokenSource = $CancellationToken ? [CancellationTokenSource]::CreateLinkedTokenSource($CancellationToken) : [CancellationTokenSource]::new()
$CancellationToken = $cancelTokenSource.Token
}
END {
$ErrorActionPreference = 'Stop'
try {
#Used to keep track of context with Tasks, because we dont have "await" style syntax like C#
[Dictionary[Task, hashtable]]$taskMap = @{}
[List[Task[Stream]]]$streamTasks = foreach ($module in $ModuleToInstall) {
$installPath = Join-Path $Destination $module.Name (Resolve-FolderVersion $module.ModuleVersion)
#TODO: Do a get-localmodule check here
$installIndicatorPath = Join-Path $installPath '.incomplete'
if (Test-Path $installIndicatorPath) {
Write-Warning "${module}: Incomplete installation found at $installPath. Will delete and retry."
Remove-Item $installPath -Recurse -Force
}
if (Test-Path $installPath) {
$existingManifestPath = try {
Resolve-Path (Join-Path $installPath "$($module.Name).psd1") -ErrorAction Stop
} catch [ActionPreferenceStopException] {
throw "${module}: Existing module folder found at $installPath but the manifest could not be found. This is likely a corrupted or missing module and should be fixed manually."
}
#TODO: Dedupe all import-powershelldatafile operations to a function ideally
$existingModuleMetadata = Import-ModuleManifest $existingManifestPath
$existingVersion = [NugetVersion]::new(
$existingModuleMetadata.ModuleVersion,
$existingModuleMetadata.privatedata.psdata.prerelease
)
#Do a prerelease evaluation
if ($module.ModuleVersion -eq $existingVersion) {
if ($Update) {
Write-Debug "${module}: Existing module found at $installPath and its version $existingVersion is the same as the requested version. -Update was specified so we are assuming that the discovered online version is the same as the local version and skipping this module installation."
continue
} else {
throw [NotImplementedException]"${module}: Existing module found at $installPath and its version $existingVersion is the same as the requested version. This is probably a bug because it should have been detected by localmodule detection. Use -Update to override..."
}
}
if ($module.ModuleVersion -lt $existingVersion) {
#TODO: Add force to override
throw [NotSupportedException]"${module}: Existing module found at $installPath and its version $existingVersion is newer than the requested prerelease version $($module.ModuleVersion). If you wish to continue, please remove the existing module folder or modify your specification and try again."
} else {
Write-Warning "${module}: Planned version $($module.ModuleVersion) is newer than existing prerelease version $existingVersion so we will overwrite."
Remove-Item $installPath -Force -Recurse
}
}
Write-Verbose "${module}: Downloading from $($module.Location)"
if (-not $module.Location) {
throw "${module}: No Download Link found. This is a bug"
}
$streamTask = $httpClient.GetStreamAsync($module.Location, $CancellationToken)
$context = @{
Module = $module
InstallPath = $installPath
}
$taskMap.Add($streamTask, $context)
$streamTask
}
[List[Job2]]$installJobs = while ($streamTasks.count -gt 0) {
$noTasksYetCompleted = -1
[int]$thisTaskIndex = [Task]::WaitAny($streamTasks, 500)
if ($thisTaskIndex -eq $noTasksYetCompleted) { continue }
$thisTask = $streamTasks[$thisTaskIndex]
$stream = $thisTask.GetAwaiter().GetResult()
$context = $taskMap[$thisTask]
$context.fetchStream = $stream
$streamTasks.RemoveAt($thisTaskIndex)
# This is a sync process and we want to do it in parallel, hence the threadjob
Write-Verbose "$($context.Module): Extracting to $($context.installPath)"
$installJob = Start-ThreadJob -ThrottleLimit $ThrottleLimit {
param(
[ValidateNotNullOrEmpty()]$stream = $USING:stream,
[ValidateNotNullOrEmpty()]$context = $USING:context
)
process {
try {
$installPath = $context.InstallPath
$installIndicatorPath = Join-Path $installPath '.incomplete'
if (Test-Path $installIndicatorPath) {
#FIXME: Output inside a threadjob is not surfaced to the user.
Write-Warning "$($context.Module): Incomplete installation found at $installPath. Will delete and retry."