tools

package
v0.0.0-...-65247a5 Latest Latest
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 Go to latest Published: Mar 21, 2014 License: AGPL-3.0 Imports: 25 Imported by: 0

Documentation

Overview

The tools package supports locating, parsing, and filtering Ubuntu tools metadata in simplestreams format. See http://launchpad.net/simplestreams and in particular the doc/README file in that project for more information about the file formats.

The tools package supports locating, parsing, and filtering Ubuntu tools metadata in simplestreams format. See http://launchpad.net/simplestreams and in particular the doc/README file in that project for more information about the file formats.

Index

Constants

View Source 
const (
	ProductMetadataPath = "streams/v1/com.ubuntu.juju:released:tools.json"
	ToolsContentId      = "com.ubuntu.juju:released:tools"
)
View Source 
const (
	WriteMirrors      = ShouldWriteMirrors(true)
	DoNotWriteMirrors = ShouldWriteMirrors(false)
)
View Source 
const (
	ContentDownload = "content-download"
)
View Source 
const DoNotAllowRetry = false

Define some boolean parameter values.

Variables

View Source 
var DefaultBaseURL = "https://streams.canonical.com/juju/tools"

This needs to be a var so we can override it for testing.

View Source 
var ErrNoTools = errors.New("no tools available")
View Source 
var PublicMirrorsInfo = `` /* 222-byte string literal not displayed */

Functions

func BundleTools 

func BundleTools(w io.Writer, forceVersion *version.Number) (tvers version.Binary, sha256Hash string, err error)

BundleTools bundles all the current juju tools in gzipped tar format to the given writer. If forceVersion is not nil, a FORCE-VERSION file is included in the tools bundle so it will lie about its current version number.

func FindBootstrapTools 

func FindBootstrapTools(cloudInst environs.ConfigGetter, params BootstrapToolsParams) (list coretools.List, err error)

FindBootstrapTools returns a ToolsList containing only those tools with which it would be reasonable to launch an environment's first machine, given the supplied constraints. If a specific agent version is not requested, all tools matching the current major.minor version are chosen.

func FindExactTools 

func FindExactTools(cloudInst environs.ConfigGetter,
	vers version.Number, series string, arch string) (t *coretools.Tools, err error)

FindExactTools returns only the tools that match the supplied version.

func FindInstanceTools 

func FindInstanceTools(cloudInst environs.ConfigGetter,
	vers version.Number, series string, arch *string) (list coretools.List, err error)

FindInstanceTools returns a ToolsList containing only those tools with which it would be reasonable to start a new instance, given the supplied series and arch.

func FindTools 

func FindTools(cloudInst environs.ConfigGetter, majorVersion, minorVersion int,
	filter coretools.Filter, allowRetry bool) (list coretools.List, err error)

FindTools returns a List containing all tools with a given major.minor version number available in the cloud instance, filtered by filter. If minorVersion = -1, then only majorVersion is considered. If no *available* tools have the supplied major.minor version number, or match the supplied filter, the function returns a *NotFoundError.

func FindToolsForCloud 

func FindToolsForCloud(sources []simplestreams.DataSource, cloudSpec simplestreams.CloudSpec,
	majorVersion, minorVersion int, filter coretools.Filter) (list coretools.List, err error)

FindToolsForCloud returns a List containing all tools with a given major.minor version number and cloudSpec, filtered by filter. If minorVersion = -1, then only majorVersion is considered. If no *available* tools have the supplied major.minor version number, or match the supplied filter, the function returns a *NotFoundError.

func GetMetadataSources 

func GetMetadataSources(env environs.ConfigGetter) ([]simplestreams.DataSource, error)

GetMetadataSources returns the sources to use when looking for simplestreams tools metadata. If env implements SupportsCustomSurces, the sources returned from that method will also be considered. The sources are configured to not use retries.

func GetMetadataSourcesWithRetries 

func GetMetadataSourcesWithRetries(env environs.ConfigGetter, allowRetry bool) ([]simplestreams.DataSource, error)

GetMetadataSourcesWithRetries returns the sources to use when looking for simplestreams tools metadata. If env implements SupportsCustomSurces, the sources returned from that method will also be considered. The sources are configured to use retries according to the value of allowRetry.

func MarshalToolsMetadataIndexJSON 

func MarshalToolsMetadataIndexJSON(metadata []*ToolsMetadata, updated time.Time) (out []byte, err error)

MarshalToolsMetadataIndexJSON marshals tools metadata to index JSON.

updated is the time at which the JSON file was updated.

func MarshalToolsMetadataJSON 

func MarshalToolsMetadataJSON(metadata []*ToolsMetadata, updated time.Time) (index, products []byte, err error)

MarshalToolsMetadataJSON marshals tools metadata to index and products JSON.

updated is the time at which the JSON file was updated.

func MarshalToolsMetadataProductsJSON 

func MarshalToolsMetadataProductsJSON(metadata []*ToolsMetadata, updated time.Time) (out []byte, err error)

MarshalToolsMetadataProductsJSON marshals tools metadata to products JSON.

updated is the time at which the JSON file was updated.

func MergeAndWriteMetadata 

func MergeAndWriteMetadata(stor storage.Storage, tools coretools.List, writeMirrors ShouldWriteMirrors) error

MergeAndWriteMetadata reads the existing metadata from storage (if any), and merges it with metadata generated from the given tools list. The resulting metadata is written to storage.

func ReadList 

func ReadList(stor storage.StorageReader, majorVersion, minorVersion int) (coretools.List, error)

ReadList returns a List of the tools in store with the given major.minor version. If minorVersion = -1, then only majorVersion is considered. If store contains no such tools, it returns ErrNoMatches.

func ResolveMetadata 

func ResolveMetadata(stor storage.StorageReader, metadata []*ToolsMetadata) error

ResolveMetadata resolves incomplete metadata by fetching the tools from storage and computing the size and hash locally.

func StorageName 

func StorageName(vers version.Binary) string

StorageName returns the name that is used to store and retrieve the given version of the juju tools.

func TestingPatchBootstrapFindTools 

func TestingPatchBootstrapFindTools(stub findtoolsfunc) func()

func ToolsURL 

func ToolsURL(source string) (string, error)

ToolsURL returns a valid tools URL constructed from source. source may be a directory, or a URL like file://foo or http://foo.

func ValidateToolsMetadata 

func ValidateToolsMetadata(params *ToolsMetadataLookupParams) ([]string, *simplestreams.ResolveInfo, error)

ValidateToolsMetadata attempts to load tools metadata for the specified cloud attributes and returns any tools versions found, or an error if the metadata could not be loaded.

func WriteMetadata 

func WriteMetadata(stor storage.Storage, metadata []*ToolsMetadata, writeMirrors ShouldWriteMirrors) error

WriteMetadata writes the given tools metadata to the given storage.

Types

type BootstrapToolsParams 

type BootstrapToolsParams struct {
	Version    *version.Number
	Arch       *string
	Series     string
	AllowRetry bool
}

BootstrapToolsParams contains parameters for FindBootstrapTools

type MetadataFile 

type MetadataFile struct {
	Path string
	Data []byte
}

type ShouldWriteMirrors 

type ShouldWriteMirrors bool

type SupportsCustomSources 

type SupportsCustomSources interface {
	GetToolsSources() ([]simplestreams.DataSource, error)
}

SupportsCustomSources represents an environment that can host tools metadata at provider specific sources.

type ToolsConstraint 

type ToolsConstraint struct {
	simplestreams.LookupParams
	Version      version.Number
	MajorVersion int
	MinorVersion int
	Released     bool
}

ToolsConstraint defines criteria used to find a tools metadata record.

func NewGeneralToolsConstraint 

func NewGeneralToolsConstraint(majorVersion, minorVersion int, released bool, params simplestreams.LookupParams) *ToolsConstraint

NewGeneralToolsConstraint returns a ToolsConstraint for tools with matching major/minor version numbers.

func NewVersionedToolsConstraint 

func NewVersionedToolsConstraint(vers version.Number, params simplestreams.LookupParams) *ToolsConstraint

NewVersionedToolsConstraint returns a ToolsConstraint for a tools with a specific version.

func (*ToolsConstraint) Ids 

func (tc *ToolsConstraint) Ids() ([]string, error)

Ids generates a string array representing product ids formed similarly to an ISCSI qualified name (IQN).

type ToolsMetadata 

type ToolsMetadata struct {
	Release  string `json:"release"`
	Version  string `json:"version"`
	Arch     string `json:"arch"`
	Size     int64  `json:"size"`
	Path     string `json:"path"`
	FullPath string `json:"-"`
	FileType string `json:"ftype"`
	SHA256   string `json:"sha256"`
}

ToolsMetadata holds information about a particular tools tarball.

func Fetch 

func Fetch(
	sources []simplestreams.DataSource, indexPath string, cons *ToolsConstraint,
	onlySigned bool) ([]*ToolsMetadata, *simplestreams.ResolveInfo, error)

Fetch returns a list of tools for the specified cloud matching the constraint. The base URL locations are as specified - the first location which has a file is the one used. Signed data is preferred, but if there is no signed data available and onlySigned is false, then unsigned data is used.

func MergeMetadata 

func MergeMetadata(tmlist1, tmlist2 []*ToolsMetadata) ([]*ToolsMetadata, error)

MergeMetadata merges the given tools metadata. If metadata for the same tools version exists in both lists, an entry with non-empty size/SHA256 takes precedence; if the two entries have different sizes/hashes, then an error is returned.

func MetadataFromTools 

func MetadataFromTools(toolsList coretools.List) []*ToolsMetadata

MetadataFromTools returns a tools metadata list derived from the given tools list. The size and sha256 will not be computed if missing.

func ReadMetadata 

func ReadMetadata(store storage.StorageReader) ([]*ToolsMetadata, error)

ReadMetadata returns the tools metadata from the given storage.

func (*ToolsMetadata) String 

func (t *ToolsMetadata) String() string

type ToolsMetadataLookupParams 

type ToolsMetadataLookupParams struct {
	simplestreams.MetadataLookupParams
	Version string
	Major   int
	Minor   int
}

ToolsMetadataLookupParams is used to query metadata for matching tools.

Source Files

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