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Koji Content Generator Metadata Proposal
This document describes the proposed Koji Content Generator Metadata Format (version 0). This is the metadata that should be provided by a Content Generator in order for the content to be imported and managed by Koji. If you have further questions about Content Generators, please email koji-devel@lists.fedorahosted.org.
Format
Content Generator Metadata for a single build is provided as a JSON map. The map has four top-level entries:
- metadata_version: The version of the metadata format used. Currently must be 0.
- build: A map containing information about the build.
- buildroots: A list of maps, one for each environment in which build output was generated, containing information about that environment.
- output: A list of maps, one map for each file that will be imported and managed by Brew.
metadata_version
This is an integer which indicates the version of the metadata format contained in this file. It will start at 0 and be incremented as the metadata format evolves.
build
The build map contains the following entries:
- name: The name of the build.
- version: The version of the build.
- release: The release of the build.
- source: The SCM URL of the sources used in the build.
- start_time: The time the build started, in seconds since the epoch.
- end_time: The time the build was completed, in seconds since the epoch.
- extra: A map of extra metadata associated with the build.
buildroots
Each map in the buildroots list contains the following entries:
- id: An id for this buildroot entry. Only needs to be consistent within this file (it will be referenced by the output). Can be synthetic/generated/random.
- host: Map containing information about the host where the build was run.
- os: The operating system that was running on the host.
- arch: The processor architecture of the host.
- content_generator: Map containing information about the Content Generator which ran the build.
- name: The short name of the Content Generator.
- version: The version of the Content Generator.
- container: Map containing information about the container in which the build was run.
- type: The type of container that was used, eg. none, directory, chroot, mock-chroot, kvm, docker
- arch: The architecture of the container. May be different than the architecture of the host, eg. i686 container on x86_64 host.
- tools: List of maps containing information about the tools used to run the build. Each map contains:
- name: Name of the tool used.
- version: Version of the tool used.
- components: List of maps containing information about content installed in the build environment (if any). Each map is guaranteed to contain a type field, which determines what other fields are present in the map. For maps where type = rpm, the following fields will be present:
- name: The rpm name.
- version: The rpm version.
- release: The rpm release.
- epoch: The rpm epoch.
- arch: The rpm arch.
- sigmd5: The SIGMD5 tag from the rpm header.
- signature: The signature used to sign the rpm (if any).
- For maps where type = file, the following fields will be present:
- filename: The name of the file.
- filesize: The size of the file.
- checksum: The checksum of the file.
- checksum_type: The checksum type used.
- The format may be extended with other types in the future.
- extra: A map containing information specific to the Content Generator that produced the files to import. For OSBS, the extra map should contain a osbs entry, which is a map with the following fields:
- build_id: The ID of the build in OSBS.
- builder_image_id: The ID of the image in OSBS that was used to run the build.
output
Each map in the output list contains the following entries:
- buildroot_id: The id of the buildroot used to create this file. Must match an entry in the buildroots list.
- filename: The name of the file.
- filesize: The size of the file.
- arch: The architecture of the file (if applicable).
- checksum: The checksum of the file.
- checksum_type: The checksum type used.
- type: The type of the file. Log files should use "log".
- components: If the output file is composed from other units, those should be listed here. The format is the same as the components field of a buildroot map.
- extra: Free-form, but should contain IDs that allow tracking the output back to the system in which it was generated (if that system retains a record of output). For docker, the extra map should contain a docker entry, which is a map with the following fields:
- id: The ID of the docker image produced in the repo used by the build tool
- parent_id: The parent ID of the docker image produced (if applicable).
- repositories: A list of repository locations where the image is available.
Example Metadata JSON
The below JSON is based loosely on the output of a docker image build.
{"metadata_version": 0,
"build": {"name": "rhel-server-docker",
"version": "7.1",
"release": "4",
"source": "git://git.engineering.redhat.com/users/vpavlin/tdl_templates.git#a14f145244",
"start_time": 1423148398,
"end_time": 1423148828},
"buildroots": [{"id": 1,
"host": {"os": "rhel-7",
"arch": "x86_64"},
"content_generator": {"name": "osbs",
"version": "0.2"},
"container": {"type": "docker",
"arch": "x86_64"},
"tools": [{"name": "docker",
"version": "1.5.0"}],
"components": [{"type": "rpm",
"name": "glibc",
"version": "2.17",
"release": "75.el7",
"epoch": null,
"arch": "x86_64",
"sigmd5": "a1b2c3...",
"signature": "fd431d51"},
{"type": "rpm",
"name": "openssl",
"version": "1.0.1e",
"release": "42.el7",
"epoch": null,
"arch": "x86_64",
"sigmd5": "d4e5f6...",
"signature": "fd431d51"},
{"type": "rpm",
"name": "bind-libs",
"version": "9.9.4",
"release": "18.el7",
"epoch": 32,
"arch": "x86_64",
"sigmd5": "987abc...",
"signature": null},
{"type": "rpm",
"name": "python-urllib3",
"version": "1.5",
"release": "8.el7",
"epoch": null,
"arch": "noarch",
"sigmd5": "123hgf...",
"signature": null},
{"type": "file",
"filename": "jboss-eap-6.3.3-full-build.zip",
"filesize": 12345678,
"checksum": "5ec2f29c4e1c2e2aa6552836e236a158",
"checksum_type": "md5"}],
"extra": {"osbs": {"build_id": 12345,
"builder_image_id": 67890}}
}],
"output": [{"buildroot_id": 1,
"filename": "rhel-server-docker-7.1-4.x86_64.tar.xz",
"filesize": 34440656,
"arch": "x86_64",
"checksum_type": "md5",
"checksum": "275ae42a45cfedbdb0c0a1acc0b55a1b",
"type": "docker-image",
"components": "",
"extra": {"docker": {"id": "987654...",
"parent_id": "a1b2c3...",
"repositories": ["repository.example.com/username/imagename:tagname",
"repository.example.com/username/imagename:latest"]}}},
{"buildroot_id": 1,
"filename": "checkout.log",
"filesize": 85724,
"arch": "noarch",
"checksum_type": "md5",
"checksum": "a1b2c3...",
"type": "log"},
{"buildroot_id": 1,
"filename": "os-indirection.log",
"filesize": 27189,
"arch": "noarch",
"checksum_type": "md5",
"checksum": "d4f5g6...",
"type": "log"}
]
}