conan cache¶
在本地缓存中执行文件操作（针对配方和/或软件包）。
conan cache path¶
$ conan cache path -h
Migration: Successfully updated settings.yml
usage: conan cache path [-h] [-f FORMAT] [--out-file OUT_FILE] [-v [V]]
[-cc CORE_CONF]
[--folder {export_source,source,build,metadata}]
reference
Show the path to the Conan cache for a given reference.
positional arguments:
reference Recipe reference or Package reference
options:
-h, --help show this help message and exit
-f FORMAT, --format FORMAT
Select the output format: json
--out-file OUT_FILE Write the output of the command to the specified file
instead of stdout.
-v [V] Level of detail of the output. Valid options from less
verbose to more verbose: -vquiet, -verror, -vwarning,
-vnotice, -vstatus, -v or -vverbose, -vv or -vdebug,
-vvv or -vtrace
-cc CORE_CONF, --core-conf CORE_CONF
Define core configuration, overwriting global.conf
values. E.g.: -cc core:non_interactive=True
--folder {export_source,source,build,metadata}
Path to show. The 'build' requires a package
reference. If the argument is not passed, it shows
'exports' path for recipe references and 'package'
folder for package references.
conan cache path 命令返回给定引用的缓存路径。根据引用类型，它可以返回配方的路径，或者软件包二进制文件的路径。
假设我们已经在当前缓存中创建了一个软件包，使用
$ conan new cmake_lib -d name=pkg -d version=0.1
$ conan create .
...
Requirements
pkg/0.1#cdc0d9d0e8f554d3df2388c535137d77 - Cache
Requirements
pkg/0.1#cdc0d9d0e8f554d3df2388c535137d77:2401fa1d188d289bb25c37cfa3317e13e377a351 - Build
现在我们想获取 pkg/0.1 配方的 conanfile.py 文件被导出的路径
$ conan cache path pkg/0.1
<path to conan cache>/p/5cb229164ec1d245/e
$ ls <path to conan cache>/p/5cb229164ec1d245/e
conanfile.py conanmanifest.txt
默认情况下，如果未指定配方修订版本，则表示缓存中的“最新”修订版本。这也可以通过文字 #latest 明确指定，同时也可以明确定义任何配方修订版本，这些命令与上面等效
$ conan cache path pkg/0.1#latest
<path to conan cache>/p/5cb229164ec1d245/e
# The recipe revision might be different in your case.
# Check the "conan create" output to get yours
$ conan cache path pkg/0.1#cdc0d9d0e8f554d3df2388c535137d77
<path to conan cache>/p/5cb229164ec1d245/e
除了配方文件夹外，还有两个对该配方生成的所有二进制文件通用的文件夹：“export_source” 文件夹和 “source” 文件夹。两者都可以通过以下方式获取
$ conan cache path pkg/0.1 --folder=export_source
<path to conan cache>/p/5cb229164ec1d245/es
$ ls <path to conan cache>/p/5cb229164ec1d245/es
CMakeLists.txt include/ src/
$ conan cache path pkg/0.1 --folder=source
<path to conan cache>/p/5cb229164ec1d245/s
$ ls <path to conan cache>/p/5cb229164ec1d245/s
CMakeLists.txt include/ src/
在这种情况下，“source” 文件夹的内容与 “export_source” 文件夹的内容相同，因为配方没有实现任何 source() 方法来获取代码或对代码进行任何其他操作，例如应用补丁。
默认情况下，配方修订版本将是 #latest，这遵循与上述相同的规则。
注意，如果软件包不是从源代码构建的，例如从服务器获取预编译的二进制文件时，这两个文件夹将不存在。
也可以通过提供 package_id 来获取二进制软件包的文件夹
# Your package_id might be different, it depends on the platform
# Check the "conan create" output to obtain yours
$ conan cache path pkg/0.1:2401fa1d188d289bb25c37cfa3317e13e377a351
<path to conan cache>/p/1cae77d6250c23b7/p
$ ls <path to conan cache>/p/1cae77d6250c23b7/p
conaninfo.txt conanmanifest.txt include/ lib/
如上所述，默认情况下它将解析为“最新”的配方修订版本和软件包修订版本。上面的命令等同于明确定义 #latest 或具体的修订版本。以下所有命令都与上面的命令等效
$ conan cache path pkg/0.1#latest:2401fa1d188d289bb25c37cfa3317e13e377a351
<path to conan cache>/p/1cae77d6250c23b7/p
$ conan cache path pkg/0.1#latest:2401fa1d188d289bb25c37cfa3317e13e377a351#latest
<path to conan cache>/p/1cae77d6250c23b7/p
$ conan cache path pkg/0.1#cdc0d9d0e8f554d3df2388c535137d77:2401fa1d188d289bb25c37cfa3317e13e377a351
<path to conan cache>/p/1cae77d6250c23b7/p
可以访问包含所有临时构建产物的“build”文件夹
$ conan cache path pkg/0.1:2401fa1d188d289bb25c37cfa3317e13e377a351 --folder=build
<path to conan cache>/p/1cae77d6250c23b7/b
ls -al <path to conan cache>/p/1cae77d6250c23b7/b
build/ CMakeLists.txt CMakeUserPresets.json conaninfo.txt include/ src/
同样，“build”文件夹只会在软件包是从源代码构建的情况下存在。
注意
最佳实践
此
conan cache path命令旨在用于对缓存进行检查，但缓存的软件包存储应被视为 只读。请勿修改、更改、删除或添加缓存中的文件。如果您使用此命令获取产物路径然后复制它们，请考虑使用
deployer。在一般情况下，手动从缓存中提取产物是不推荐的。开发者可以使用
conan list ... --format=compact命令以紧凑格式获取完整的引用，然后将其复制粘贴到conan cache path命令中
conan cache clean¶
$ conan cache clean -h
Migration: Successfully updated settings.yml
usage: conan cache clean [-h] [--out-file OUT_FILE] [-v [V]] [-cc CORE_CONF]
[-l LIST] [-s] [-b] [-d] [-t] [-bs]
[-p PACKAGE_QUERY]
[pattern]
Remove non-critical folders from the cache, like source, build and/or download
(.tgz store) ones.
positional arguments:
pattern Selection pattern for references to clean
options:
-h, --help show this help message and exit
--out-file OUT_FILE Write the output of the command to the specified file
instead of stdout.
-v [V] Level of detail of the output. Valid options from less
verbose to more verbose: -vquiet, -verror, -vwarning,
-vnotice, -vstatus, -v or -vverbose, -vv or -vdebug,
-vvv or -vtrace
-cc CORE_CONF, --core-conf CORE_CONF
Define core configuration, overwriting global.conf
values. E.g.: -cc core:non_interactive=True
-l LIST, --list LIST Package list of packages to clean
-s, --source Clean source folders
-b, --build Clean build folders
-d, --download Clean download and metadata folders
-t, --temp Clean temporary folders
-bs, --backup-sources
Clean backup sources
-p PACKAGE_QUERY, --package-query PACKAGE_QUERY
Remove only the packages matching a specific query,
e.g., os=Windows AND (arch=x86 OR compiler=gcc)
此命令将删除 Conan 在执行过程中生成的所有临时文件夹，以及 source、build 和 download 文件夹。它将对 pattern 中传递的每个匹配引用或使用 --list 选项时 pkglist 文件中的内容执行此操作。可以使用不同的标志将清理限制在特定类型的文件夹。
示例:
删除所有非关键文件
$ conan cache clean "*"
删除所有临时文件
$ conan cache clean "*" --temp
删除
zlib配方的 download 文件夹$ conan cache clean "zlib/*" --download
删除除
zlib配方的 download 文件夹以外的所有内容$ conan cache clean "zlib/*" --source --build --temp
获取要删除临时文件的软件包列表，然后删除它们
$ conan list "zlib/*" -f=json > pkglist.json $ conan cache clean --list pkglist.json
conan cache check-integrity¶
$ conan cache check-integrity -h
Migration: Successfully updated settings.yml
usage: conan cache check-integrity [-h] [--out-file OUT_FILE] [-v [V]]
[-cc CORE_CONF] [-l LIST]
[-p PACKAGE_QUERY]
[pattern]
Check the integrity of the local cache for the given references
positional arguments:
pattern Selection pattern for references to check integrity
for
options:
-h, --help show this help message and exit
--out-file OUT_FILE Write the output of the command to the specified file
instead of stdout.
-v [V] Level of detail of the output. Valid options from less
verbose to more verbose: -vquiet, -verror, -vwarning,
-vnotice, -vstatus, -v or -vverbose, -vv or -vdebug,
-vvv or -vtrace
-cc CORE_CONF, --core-conf CORE_CONF
Define core configuration, overwriting global.conf
values. E.g.: -cc core:non_interactive=True
-l LIST, --list LIST Package list of packages to check integrity for
-p PACKAGE_QUERY, --package-query PACKAGE_QUERY
Only the packages matching a specific query, e.g.,
os=Windows AND (arch=x86 OR compiler=gcc)
conan cache check-integrity 命令检查本地缓存中与给定 pattern 匹配的 Conan 软件包的完整性，或者在使用 --list 选项时检查 pkglist 文件内容的完整性。这意味着如果 conanmanifest.txt 中包含的任何文件缺失或与该文件中声明的校验和不匹配，它将抛出错误。
例如，要验证整个 Conan 本地缓存的完整性，执行
$ conan cache check-integrity "*"
mypkg/1.0: Integrity checked: ok
mypkg/1.0:454923cd42d0da27b9b1294ebc3e4ecc84020747: Integrity checked: ok
mypkg/1.0:454923cd42d0da27b9b1294ebc3e4ecc84020747: Integrity checked: ok
zlib/1.2.11: Integrity checked: ok
zlib/1.2.11:6fe7fa69f760aee504e0be85c12b2327c716f9e7: Integrity checked: ok
conan cache backup-upload¶
$ conan cache backup-upload -h
Migration: Successfully updated settings.yml
usage: conan cache backup-upload [-h] [--out-file OUT_FILE] [-v [V]]
[-cc CORE_CONF]
Upload all the source backups present in the cache
options:
-h, --help show this help message and exit
--out-file OUT_FILE Write the output of the command to the specified file
instead of stdout.
-v [V] Level of detail of the output. Valid options from less
verbose to more verbose: -vquiet, -verror, -vwarning,
-vnotice, -vstatus, -v or -vverbose, -vv or -vdebug,
-vvv or -vtrace
-cc CORE_CONF, --core-conf CORE_CONF
Define core configuration, overwriting global.conf
values. E.g.: -cc core:non_interactive=True
conan cache backup-upload 命令将把本地缓存中存在的所有源备份上传到备份服务器（排除从 core.sources:exclude_urls 配置中列出的排除 URL 获取的备份），无论它们属于哪个软件包（如果有）。
conan cache save¶
$ conan cache save -h
Migration: Successfully updated settings.yml
usage: conan cache save [-h] [-f FORMAT] [--out-file OUT_FILE] [-v [V]]
[-cc CORE_CONF] [-l LIST] [--file FILE] [--no-source]
[pattern]
Get the artifacts from a package list and archive them
positional arguments:
pattern A pattern in the form
'pkg/version#revision:package_id#revision', e.g:
zlib/1.2.13:* means all binaries for zlib/1.2.13. If
revision is not specified, it is assumed latest one.
options:
-h, --help show this help message and exit
-f FORMAT, --format FORMAT
Select the output format: json
--out-file OUT_FILE Write the output of the command to the specified file
instead of stdout.
-v [V] Level of detail of the output. Valid options from less
verbose to more verbose: -vquiet, -verror, -vwarning,
-vnotice, -vstatus, -v or -vverbose, -vv or -vdebug,
-vvv or -vtrace
-cc CORE_CONF, --core-conf CORE_CONF
Define core configuration, overwriting global.conf
values. E.g.: -cc core:non_interactive=True
-l LIST, --list LIST Package list of packages to save
--file FILE Save to this tgz file
--no-source Exclude the sources
阅读更多：从/向缓存保存和恢复软件包。
conan cache restore¶
$ conan cache restore -h
Migration: Successfully updated settings.yml
usage: conan cache restore [-h] [-f FORMAT] [--out-file OUT_FILE] [-v [V]]
[-cc CORE_CONF]
file
Put the artifacts from an archive into the cache
positional arguments:
file Path to archive to restore
options:
-h, --help show this help message and exit
-f FORMAT, --format FORMAT
Select the output format: json
--out-file OUT_FILE Write the output of the command to the specified file
instead of stdout.
-v [V] Level of detail of the output. Valid options from less
verbose to more verbose: -vquiet, -verror, -vwarning,
-vnotice, -vstatus, -v or -vverbose, -vv or -vdebug,
-vvv or -vtrace
-cc CORE_CONF, --core-conf CORE_CONF
Define core configuration, overwriting global.conf
values. E.g.: -cc core:non_interactive=True
阅读更多：从/向缓存保存和恢复软件包。