Difference between revisions of "FHIR Package Cache"
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| − | = Package Cache = | + | Content on this page has been migrated to Confluence here: https://confluence.hl7.org/display/FHIR/FHIR+Package+Cache |
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| + | '''NOTE: This page is under the management of FHIR Infrastructure. All substantive changes to this specification require formal review and approval by the FHIR-I Working Group.''' | ||
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| + | =Package Cache= | ||
Each system has a global package cache that stores the packages known to that system. This cache is shared between tools for efficiency. Authors of tools that work with FHIR packages are encouraged to follow this specification for the convenience of users. | Each system has a global package cache that stores the packages known to that system. This cache is shared between tools for efficiency. Authors of tools that work with FHIR packages are encouraged to follow this specification for the convenience of users. | ||
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The package cache keeps the uncompressed content of all installed packages. Different versions of a package are installed side-by-side, and are individually resolvable. A Fhir package client should use the global package cache, but may keep a local cache in a working folder instead. The global package cache makes sure that each packages is installed only once on the computer | The package cache keeps the uncompressed content of all installed packages. Different versions of a package are installed side-by-side, and are individually resolvable. A Fhir package client should use the global package cache, but may keep a local cache in a working folder instead. The global package cache makes sure that each packages is installed only once on the computer | ||
| − | = Location = | + | =Location= |
The location differs per operating system. | The location differs per operating system. | ||
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Location of the global package cache: | Location of the global package cache: | ||
| − | + | *Windows: c:\users\<username>\.fhir\packages | |
| − | + | *Unix/Linux: /~/.fhir/packages | |
For system services (daemons): | For system services (daemons): | ||
| − | + | *Windows: c:\ProgramData\.fhir\packages | |
| − | + | *Unix/Linux: /var/lib/.fhir/packages | |
The package cache root folder contains a folder per package where the folder name is the package name, a dash and the package version. | The package cache root folder contains a folder per package where the folder name is the package name, a dash and the package version. | ||
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hl7.fhir.us.core#0.1.1 | hl7.fhir.us.core#0.1.1 | ||
| − | + | Note: package names are not allowed to contain the character "#" | |
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| − | Note: package | ||
| − | = | + | =Folder contents= |
| − | The | + | In each package folder the package is unzipped as it is. The contents of the folder are the unpacked version of the GZipped tarball and SHALL otherwise conform to the requirements for the [[FHIR NPM Package Spec]]. |
| − | + | There is at least one folder called "package", in which all the content of the package is found, including the package manifest. Other folders with other uses may exist if found in the source package. | |
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| − | + | =Recursion= | |
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| − | = Recursion = | ||
A package client must resolve package dependencies recursively, but keep the package cache flat. An installed package should itself not contain any dependencies. All packages are installed on the same level. | A package client must resolve package dependencies recursively, but keep the package cache flat. An installed package should itself not contain any dependencies. All packages are installed on the same level. | ||
| − | + | =Package .index.json files= | |
| − | + | Tools that extract and populate the package cache are repsonsible for ensuring that the .index.json files exist. If the package comes with a .index.json file, the tool does not need to rebuild it, though it may choose to do so. | |
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Latest revision as of 19:50, 30 October 2019
Content on this page has been migrated to Confluence here: https://confluence.hl7.org/display/FHIR/FHIR+Package+Cache
NOTE: This page is under the management of FHIR Infrastructure. All substantive changes to this specification require formal review and approval by the FHIR-I Working Group.
Package Cache
Each system has a global package cache that stores the packages known to that system. This cache is shared between tools for efficiency. Authors of tools that work with FHIR packages are encouraged to follow this specification for the convenience of users.
The package cache keeps the uncompressed content of all installed packages. Different versions of a package are installed side-by-side, and are individually resolvable. A Fhir package client should use the global package cache, but may keep a local cache in a working folder instead. The global package cache makes sure that each packages is installed only once on the computer
Location
The location differs per operating system.
Location of the global package cache:
- Windows: c:\users\<username>\.fhir\packages
- Unix/Linux: /~/.fhir/packages
For system services (daemons):
- Windows: c:\ProgramData\.fhir\packages
- Unix/Linux: /var/lib/.fhir/packages
The package cache root folder contains a folder per package where the folder name is the package name, a dash and the package version.
hl7.fhir.us.core#0.1.1
Note: package names are not allowed to contain the character "#"
Folder contents
In each package folder the package is unzipped as it is. The contents of the folder are the unpacked version of the GZipped tarball and SHALL otherwise conform to the requirements for the FHIR NPM Package Spec.
There is at least one folder called "package", in which all the content of the package is found, including the package manifest. Other folders with other uses may exist if found in the source package.
Recursion
A package client must resolve package dependencies recursively, but keep the package cache flat. An installed package should itself not contain any dependencies. All packages are installed on the same level.
Package .index.json files
Tools that extract and populate the package cache are repsonsible for ensuring that the .index.json files exist. If the package comes with a .index.json file, the tool does not need to rebuild it, though it may choose to do so.
