charm: github.com/juju/charm Index | Files | Directories

package charm

import "github.com/juju/charm"

Copyright 2019 Canonical Ltd. Licensed under the AGPLv3, see LICENCE file for details.

Index

Package Files

actions.go bundle.go bundlearchive.go bundledata.go bundledatasrc.go bundledir.go charm.go charmarchive.go charmdir.go config.go extra_bindings.go jujuignore.go lxdprofile.go meta.go metrics.go offerurl.go overlay.go payloads.go resources.go url.go version.go

Variables

var (
    ErrUnresolvedUrl error = fmt.Errorf("charm or bundle url series is not resolved")
)

func GetActionNameRule Uses

func GetActionNameRule() *regexp.Regexp

Export `actionNameRule` variable to different contexts.

func IsBuiltinMetric Uses

func IsBuiltinMetric(key string) bool

IsBuiltinMetric reports whether the given metric key is in the builtin metric namespace

func IsCharmDir Uses

func IsCharmDir(path string) bool

IsCharmDir report whether the path is likely to represent a charm, even it may be incomplete.

func IsMissingSeriesError Uses

func IsMissingSeriesError(err error) bool

IsMissingSeriesError returns true if err is an missingSeriesError.

func IsUnsupportedSeriesError Uses

func IsUnsupportedSeriesError(err error) bool

IsUnsupportedSeriesError returns true if err is an UnsupportedSeriesError.

func IsValidLocalCharmOrBundlePath Uses

func IsValidLocalCharmOrBundlePath(path string) bool

IsValidLocalCharmOrBundlePath returns true if path is valid for reading a local charm or bundle.

func IsValidName Uses

func IsValidName(name string) bool

IsValidName reports whether name is a valid charm or bundle name.

func IsValidOfferURL Uses

func IsValidOfferURL(urlStr string) bool

IsValidOfferURL ensures that a URL string is a valid OfferURL.

func IsValidSeries Uses

func IsValidSeries(series string) bool

IsValidSeries reports whether series is a valid series in charm or bundle URLs.

func MakeURL Uses

func MakeURL(user, model, application, controller string) string

MakeURL constructs an offer URL from the specified components.

func NewUnsupportedSeriesError Uses

func NewUnsupportedSeriesError(requestedSeries string, supportedSeries []string) error

NewUnsupportedSeriesError returns an error indicating that the requested series is not supported by a charm.

func Quote Uses

func Quote(unsafe string) string

Quote translates a charm url string into one which can be safely used in a file path. ASCII letters, ASCII digits, dot and dash stay the same; other characters are translated to their hex representation surrounded by underscores.

func ReadVersion Uses

func ReadVersion(r io.Reader) (string, error)

ReadVersion extracts the VCS version from a charm's version file.

func SeriesForCharm Uses

func SeriesForCharm(requestedSeries string, supportedSeries []string) (string, error)

SeriesForCharm takes a requested series and a list of series supported by a charm and returns the series which is relevant. If the requested series is empty, then the first supported series is used, otherwise the requested series is validated against the supported series.

func ValidateName Uses

func ValidateName(name string) error

ValidateName returns an error if the given name is invalid.

func ValidateSchema Uses

func ValidateSchema(schema string) error

ValidateSchema returns an error if the schema is invalid.

func ValidateSeries Uses

func ValidateSeries(series string) error

ValidateSeries returns an error if the given series is invalid.

func VerifyNoOverlayFieldsPresent Uses

func VerifyNoOverlayFieldsPresent(bd *BundleData) error

VerifyNoOverlayFieldsPresent scans the contents of bd and returns an error if the bundle contains any overlay-specific values.

type ActionSpec Uses

type ActionSpec struct {
    Description string
    Params      map[string]interface{}
}

ActionSpec is a definition of the parameters and traits of an Action. The Params map is expected to conform to JSON-Schema Draft 4 as defined at http://json-schema.org/draft-04/schema# (see http://json-schema.org/latest/json-schema-core.html)

func (*ActionSpec) InsertDefaults Uses

func (spec *ActionSpec) InsertDefaults(target map[string]interface{}) (map[string]interface{}, error)

InsertDefaults inserts the schema's default values in target using github.com/juju/gojsonschema. If a nil target is received, an empty map will be created as the target. The target is then mutated to include the defaults.

The returned map will be the transformed or created target map.

func (*ActionSpec) ValidateParams Uses

func (spec *ActionSpec) ValidateParams(params map[string]interface{}) error

ValidateParams validates the passed params map against the given ActionSpec and returns any error encountered. Usage:

err := ch.Actions().ActionSpecs["snapshot"].ValidateParams(someMap)

type Actions Uses

type Actions struct {
    ActionSpecs map[string]ActionSpec `yaml:"actions,omitempty" bson:",omitempty"`
}

Actions defines the available actions for the charm. Additional params may be added as metadata at a future time (e.g. version.)

func NewActions Uses

func NewActions() *Actions

Build this out further if it becomes necessary.

func ReadActionsYaml Uses

func ReadActionsYaml(r io.Reader) (*Actions, error)

ReadActionsYaml builds an Actions spec from a charm's actions.yaml.

type ApplicationSpec Uses

type ApplicationSpec struct {
    // Charm holds the charm URL of the charm to
    // use for the given application.
    Charm string `bson:",omitempty" yaml:",omitempty" json:",omitempty"`

    // Channel describes the preferred channel to use when deploying a
    // remote charm.
    Channel string `bson:"channel,omitempty" yaml:"channel,omitempty" json:"channel,omitempty"`

    // Series is the series to use when deploying a local charm,
    // if the charm does not specify a default or the default
    // is not the desired value.
    // Series is not compatible with charm store charms where
    // the series is specified in the URL.
    Series string `bson:",omitempty" yaml:",omitempty" json:",omitempty"`

    // Resources is the set of resource revisions to deploy for the
    // application. Bundles only support charm store resources and not ones
    // that were uploaded to the controller.
    // A resource value can either be an integer revision number,
    // or a string holding a path to a local resource file.
    Resources map[string]interface{} `bson:",omitempty" yaml:",omitempty" json:",omitempty"`

    // NumUnits holds the number of units of the
    // application that will be deployed.
    // For Kubernetes bundles, this will be an alias for Scale.
    //
    // For a subordinate application, this actually represents
    // an arbitrary number of units depending on
    // the application it is related to.
    NumUnits int `bson:",omitempty" yaml:"num_units,omitempty" json:",omitempty"`

    // Scale_ holds the number of pods required for the application.
    // For IAAS bundles, this will be an alias for NumUnits.
    Scale_ int `bson:"scale,omitempty" yaml:"scale,omitempty" json:"scale,omitempty"`

    // To is interpreted according to whether this is an
    // IAAS or Kubernetes bundle.
    //
    // For Kubernetes bundles, the use of Placement is preferred.
    // To must be a single valued list representing label key values
    // used as a node selector.
    //
    // For IAAS bundles, To may hold up to NumUnits members with
    // each member specifying a desired placement
    // for the respective unit of the application.
    //
    // In regular-expression-like notation, each
    // element matches the following pattern:
    //
    //      (<containertype>:)?(<unit>|<machine>|new)
    //
    // If containertype is specified, the unit is deployed
    // into a new container of that type, otherwise
    // it will be "hulk-smashed" into the specified location,
    // by co-locating it with any other units that happen to
    // be there, which may result in unintended behavior.
    //
    // The second part (after the colon) specifies where
    // the new unit should be placed - it may refer to
    // a unit of another application specified in the bundle,
    // a machine id specified in the machines section,
    // or the special name "new" which specifies a newly
    // created machine.
    //
    // A unit placement may be specified with an application name only,
    // in which case its unit number is assumed to
    // be one more than the unit number of the previous
    // unit in the list with the same application, or zero
    // if there were none.
    //
    // If there are less elements in To than NumUnits,
    // the last element is replicated to fill it. If there
    // are no elements (or To is omitted), "new" is replicated.
    //
    // For example:
    //
    //     wordpress/0 wordpress/1 lxc:0 kvm:new
    //
    //  specifies that the first two units get hulk-smashed
    //  onto the first two units of the wordpress application,
    //  the third unit gets allocated onto an lxc container
    //  on machine 0, and subsequent units get allocated
    //  on kvm containers on new machines.
    //
    // The above example is the same as this:
    //
    //     wordpress wordpress lxc:0 kvm:new
    To  []string `bson:",omitempty" json:",omitempty" yaml:",omitempty"`

    // Placement_ holds a model selector/affinity expression used to specify
    // pod placement for Kubernetes applications.
    // Not relevant for IAAS applications.
    Placement_ string `bson:"placement,omitempty" json:"placement,omitempty" yaml:"placement,omitempty"`

    // Expose holds whether the application must be exposed.
    Expose bool `bson:",omitempty" json:",omitempty" yaml:",omitempty"`

    // Options holds the configuration values
    // to apply to the new application. They should
    // be compatible with the charm configuration.
    Options map[string]interface{} `bson:",omitempty" json:",omitempty" yaml:",omitempty"`

    // Annotations holds any annotations to apply to the
    // application when deployed.
    Annotations map[string]string `bson:",omitempty" json:",omitempty" yaml:",omitempty"`

    // Constraints holds the default constraints to apply
    // when creating new machines for units of the application.
    // This is ignored for units with explicit placement directives.
    Constraints string `bson:",omitempty" json:",omitempty" yaml:",omitempty"`

    // Storage holds the constraints for storage to assign
    // to units of the application.
    Storage map[string]string `bson:",omitempty" json:",omitempty" yaml:",omitempty"`

    // Devices holds the constraints for devices to assign
    // to units of the application.
    Devices map[string]string `bson:",omitempty" json:",omitempty" yaml:",omitempty"`

    // EndpointBindings maps how endpoints are bound to spaces
    EndpointBindings map[string]string `bson:"bindings,omitempty" json:"bindings,omitempty" yaml:"bindings,omitempty"`

    // Offers holds one entry for each exported offer for this application
    // where the key is the offer name.
    Offers map[string]*OfferSpec `bson:"offers,omitempty" json:"offers,omitempty" yaml:"offers,omitempty" source:"overlay-only"`

    // Plan specifies the plan under which the application is to be deployed.
    // If "default", the default plan will be used for the charm
    Plan string `bson:"plan,omitempty" json:"plan,omitempty" yaml:"plan,omitempty"`

    // RequiresTrust indicates that the application requires access to
    // cloud credentials and must therefore be explicitly trusted by the
    // operator before it can be deployed.
    RequiresTrust bool `bson:"trust,omitempty" json:"trust,omitempty" yaml:"trust,omitempty"`
}

ApplicationSpec represents a single application that will be deployed as part of the bundle.

type Bundle Uses

type Bundle interface {
    // Data returns the contents of the bundle's bundle.yaml file.
    Data() *BundleData
    // ReadMe returns the contents of the bundle's README.md file.
    ReadMe() string
    // ContainsOverlays returns true if the bundle contains any overlays.
    ContainsOverlays() bool
}

The Bundle interface is implemented by any type that may be handled as a bundle. It encapsulates all the data of a bundle.

func ReadBundle Uses

func ReadBundle(path string) (Bundle, error)

ReadBundle reads a Bundle from path, which can point to either a bundle archive or a bundle directory.

type BundleArchive Uses

type BundleArchive struct {
    Path string
    // contains filtered or unexported fields
}

func ReadBundleArchive Uses

func ReadBundleArchive(path string) (*BundleArchive, error)

ReadBundleArchive reads a bundle archive from the given file path.

func ReadBundleArchiveBytes Uses

func ReadBundleArchiveBytes(data []byte) (*BundleArchive, error)

ReadBundleArchiveBytes reads a bundle archive from the given byte slice.

func ReadBundleArchiveFromReader Uses

func ReadBundleArchiveFromReader(r io.ReaderAt, size int64) (*BundleArchive, error)

ReadBundleArchiveFromReader returns a BundleArchive that uses r to read the bundle. The given size must hold the number of available bytes in the file.

Note that the caller is responsible for closing r - methods on the returned BundleArchive may fail after that.

func (*BundleArchive) ContainsOverlays Uses

func (a *BundleArchive) ContainsOverlays() bool

ContainsOverlays implements Bundle.ReadMe.

func (*BundleArchive) Data Uses

func (a *BundleArchive) Data() *BundleData

Data implements Bundle.Data.

func (*BundleArchive) ExpandTo Uses

func (a *BundleArchive) ExpandTo(dir string) error

ExpandTo expands the bundle archive into dir, creating it if necessary. If any errors occur during the expansion procedure, the process will abort.

func (*BundleArchive) ReadMe Uses

func (a *BundleArchive) ReadMe() string

ReadMe implements Bundle.ReadMe.

type BundleData Uses

type BundleData struct {
    // Type is used to signify whether this bundle is for IAAS or Kubernetes deployments.
    // Valid values are "Kubernetes" or "", with empty signifying an IAAS bundle.
    Type string `bson:"bundle,omitempty" json:"bundle,omitempty" yaml:"bundle,omitempty"`

    // Applications holds one entry for each application
    // that the bundle will create, indexed by
    // the application name.
    Applications map[string]*ApplicationSpec `bson:"applications,omitempty" json:"applications,omitempty" yaml:"applications,omitempty"`

    // Machines holds one entry for each machine referred to
    // by unit placements. These will be mapped onto actual
    // machines at bundle deployment time.
    // It is an error if a machine is specified but
    // not referred to by a unit placement directive.
    Machines map[string]*MachineSpec `bson:",omitempty" json:",omitempty" yaml:",omitempty"`

    // Saas holds one entry for each software as a service (SAAS) for cross
    // model relation (CMR). These will be mapped to the consuming side when
    // deploying a bundle.
    Saas map[string]*SaasSpec `bson:"saas,omitempty" json:"saas,omitempty" yaml:"saas,omitempty"`

    // Series holds the default series to use when
    // the bundle chooses charms.
    Series string `bson:",omitempty" json:",omitempty" yaml:",omitempty"`

    // Relations holds a slice of 2-element slices,
    // each specifying a relation between two applications.
    // Each two-element slice holds two endpoints,
    // each specified as either colon-separated
    // (application, relation) pair or just an application name.
    // The relation is made between each. If the relation
    // name is omitted, it will be inferred from the available
    // relations defined in the applications' charms.
    Relations [][]string `bson:",omitempty" json:",omitempty" yaml:",omitempty"`

    // White listed set of tags to categorize bundles as we do charms.
    Tags []string `bson:",omitempty" json:",omitempty" yaml:",omitempty"`

    // Short paragraph explaining what the bundle is useful for.
    Description string `bson:",omitempty" json:",omitempty" yaml:",omitempty"`
    // contains filtered or unexported fields
}

BundleData holds the contents of the bundle.

func ExtractBaseAndOverlayParts Uses

func ExtractBaseAndOverlayParts(bd *BundleData) (base, overlay *BundleData, err error)

ExtractBaseAndOverlayParts splits the bundle data into a base and overlay-specific bundle so that their union yields bd. To decide whether a field is overlay-specific, the implementation uses reflection and recursively scans the BundleData fields looking for fields annotated with the "overlay-only: true" tag.

To produce the base bundle, the original bundle is filtered and all overlay-specific values are set to the zero value for their type. To produce the overlay-specific bundle, we once again filter the original bundle but this time zero out fields that do not contain any descendant fields that are overlay-specific.

To clarify how this method works let's consider a bundle created via the yaml blob below:

applications:
  apache2:
    charm: cs:apache2-26
    offers:
      my-offer:
        endpoints:
        - apache-website
        - website-cache
      my-other-offer:
        endpoints:
        - apache-website
series: bionic

The "offers" and "endpoints" attributes are overlay-specific fields. If we were to run this method and then marshal the results back to yaml we would get:

The base bundle:

applications:
  apache2:
    charm: cs:apache2-26
series: bionic

The overlay-specific bundle:

applications:
  apache2:
    offers:
      my-offer:
        endpoints:
        - apache-website
        - website-cache
      my-other-offer:
        endpoints:
        - apache-website

The two bundles returned by this method are copies of the original bundle data and can thus be safely manipulated by the caller.

func ReadAndMergeBundleData Uses

func ReadAndMergeBundleData(sources ...BundleDataSource) (*BundleData, error)

ReadAndMergeBundleData reads N bundle data sources, composes their contents together and returns the result. The first bundle data source is treated as a base bundle while subsequent bundle data sources are treated as overlays which are sequentially merged onto the base bundle.

Before returning the merged bundle, ReadAndMergeBundleData will also attempt to resolve any include directives present in the machine annotations, application options and annotations.

When merging an overlay into a base bundle the following rules apply for the BundleData struct fields: - if an overlay specifies a bundle-level series, it overrides the base bundle

series.

- overlay-defined relations are appended to the base bundle relations - overlay-defined machines overwrite the base bundle machines. - if an overlay defines an application that is not present in the base bundle,

it will get appended to the application list.

- if an overlay defines an empty application or saas value, it will be removed

from the base bundle together with any associated relations. For example, to
remove an application named "mysql" the following overlay snippet can be
provided:
  applications:
    mysql:

- if an overlay defines an application that is also present in the base bundle

the two application specs are merged together (see following rules)

ApplicationSpec merge rules: - if the overlay defines a value for a scalar or slice field, it will overwrite

the value from the base spec (e.g. trust, series etc).

- if the overlay specifies a nil/empty value for a map field, then the map

field of the base spec will be cleared.

- if the overlay specifies a non-empty value for a map field, its key/value

tuples are iterated and:
- if the value is nil/zero and the value is non-scalar, it is deleted from
  the base spec.
- otherwise, the key/value is inserted into the base spec overwriting any
  existing entries.

func ReadBundleData Uses

func ReadBundleData(r io.Reader) (*BundleData, error)

ReadBundleData reads bundle data from the given reader. The returned data is not verified - call Verify to ensure that it is OK.

func (*BundleData) RequiredCharms Uses

func (bd *BundleData) RequiredCharms() []string

RequiredCharms returns a sorted slice of all the charm URLs required by the bundle.

func (*BundleData) SetBSON Uses

func (bd *BundleData) SetBSON(raw bson.Raw) error

SetBSON implements the bson.Setter interface.

func (*BundleData) UnmarshalJSON Uses

func (bd *BundleData) UnmarshalJSON(b []byte) error

UnmarshalJSON implements the json.Unmarshaler interface.

func (*BundleData) UnmarshalYAML Uses

func (bd *BundleData) UnmarshalYAML(f func(interface{}) error) error

UnmarshalYAML implements the yaml.Unmarshaler interface.

func (*BundleData) UnmarshaledWithServices Uses

func (d *BundleData) UnmarshaledWithServices() bool

UnmarshaledWithServices reports whether the bundle data was unmarshaled from a representation that used the legacy "services" field rather than the "applications" field.

func (*BundleData) Verify Uses

func (bd *BundleData) Verify(
    verifyConstraints func(c string) error,
    verifyStorage func(s string) error,
    verifyDevices func(s string) error,
) error

Verify is a convenience method that calls VerifyWithCharms with a nil charms map.

func (*BundleData) VerifyLocal Uses

func (bd *BundleData) VerifyLocal(
    bundleDir string,
    verifyConstraints func(c string) error,
    verifyStorage func(s string) error,
    verifyDevices func(s string) error,
) error

VerifyLocal verifies that a local bundle file is consistent. A local bundle file may contain references to charms which are referred to by a directory, either relative or absolute.

bundleDir is used to construct the full path for charms specified using a relative directory path. The charm path is therefore expected to be relative to the bundle.yaml file.

func (*BundleData) VerifyWithCharms Uses

func (bd *BundleData) VerifyWithCharms(
    verifyConstraints func(c string) error,
    verifyStorage func(s string) error,
    verifyDevices func(s string) error,
    charms map[string]Charm,
) error

VerifyWithCharms verifies that the bundle is consistent. The verifyConstraints function is called to verify any constraints that are found. If verifyConstraints is nil, no checking of constraints will be done. Similarly, a non-nil verifyStorage, verifyDevices function is called to verify any storage constraints.

It verifies the following:

- All defined machines are referred to by placement directives. - All applications referred to by placement directives are specified in the bundle. - All applications referred to by relations are specified in the bundle. - All basic constraints are valid. - All storage constraints are valid.

If charms is not nil, it should hold a map with an entry for each charm url returned by bd.RequiredCharms. The verification will then also check that applications are defined with valid charms, relations are correctly made and options are defined correctly.

If the verification fails, Verify returns a *VerificationError describing all the problems found.

type BundleDataPart Uses

type BundleDataPart struct {
    Data        *BundleData
    PresenceMap FieldPresenceMap
}

BundleDataPart combines a parsed BundleData instance with a nested map that can be used to discriminate between fields that are missing from the data and those that are present but defined to be empty.

type BundleDataSource Uses

type BundleDataSource interface {
    Parts() []*BundleDataPart
    BasePath() string
    ResolveInclude(path string) ([]byte, error)
}

BundleDataSource is implemented by types that can parse bundle data into a list of composable parts.

func LocalBundleDataSource Uses

func LocalBundleDataSource(path string) (BundleDataSource, error)

LocalBundleDataSource reads a (potentially multi-part) bundle from path and returns a BundleDataSource for it. Path may point to a yaml file, a bundle directory or a bundle archive.

func StreamBundleDataSource Uses

func StreamBundleDataSource(r io.Reader, basePath string) (BundleDataSource, error)

StreamBundleDataSource reads a (potentially multi-part) bundle from r and returns a BundleDataSource for it.

type BundleDir Uses

type BundleDir struct {
    Path string
    // contains filtered or unexported fields
}

func ReadBundleDir Uses

func ReadBundleDir(path string) (dir *BundleDir, err error)

ReadBundleDir returns a BundleDir representing an expanded bundle directory. It does not verify the bundle data.

func (*BundleDir) ArchiveTo Uses

func (dir *BundleDir) ArchiveTo(w io.Writer) error

func (*BundleDir) ContainsOverlays Uses

func (dir *BundleDir) ContainsOverlays() bool

func (*BundleDir) Data Uses

func (dir *BundleDir) Data() *BundleData

func (*BundleDir) ReadMe Uses

func (dir *BundleDir) ReadMe() string

type Charm Uses

type Charm interface {
    Meta() *Meta
    Config() *Config
    Metrics() *Metrics
    Actions() *Actions
    Revision() int
}

The Charm interface is implemented by any type that may be handled as a charm.

func ReadCharm Uses

func ReadCharm(path string) (charm Charm, err error)

ReadCharm reads a Charm from path, which can point to either a charm archive or a charm directory.

type CharmArchive Uses

type CharmArchive struct {
    Path string // May be empty if CharmArchive wasn't read from a file
    // contains filtered or unexported fields
}

The CharmArchive type encapsulates access to data and operations on a charm archive.

func ReadCharmArchive Uses

func ReadCharmArchive(path string) (*CharmArchive, error)

ReadCharmArchive returns a CharmArchive for the charm in path.

func ReadCharmArchiveBytes Uses

func ReadCharmArchiveBytes(data []byte) (archive *CharmArchive, err error)

ReadCharmArchiveBytes returns a CharmArchive read from the given data. Make sure the archive fits in memory before using this.

func ReadCharmArchiveFromReader Uses

func ReadCharmArchiveFromReader(r io.ReaderAt, size int64) (archive *CharmArchive, err error)

ReadCharmArchiveFromReader returns a CharmArchive that uses r to read the charm. The given size must hold the number of available bytes in the file.

Note that the caller is responsible for closing r - methods on the returned CharmArchive may fail after that.

func (*CharmArchive) Actions Uses

func (a *CharmArchive) Actions() *Actions

Actions returns the Actions map for the actions.yaml file for the charm archive.

func (*CharmArchive) Config Uses

func (a *CharmArchive) Config() *Config

Config returns the Config representing the config.yaml file for the charm archive.

func (*CharmArchive) ExpandTo Uses

func (a *CharmArchive) ExpandTo(dir string) error

ExpandTo expands the charm archive into dir, creating it if necessary. If any errors occur during the expansion procedure, the process will abort.

func (*CharmArchive) LXDProfile Uses

func (a *CharmArchive) LXDProfile() *LXDProfile

LXDProfile returns the LXDProfile representing the lxd-profile.yaml file for the charm expanded in dir.

func (*CharmArchive) Manifest Uses

func (a *CharmArchive) Manifest() (set.Strings, error)

Manifest returns a set of the charm's contents.

func (*CharmArchive) Meta Uses

func (a *CharmArchive) Meta() *Meta

Meta returns the Meta representing the metadata.yaml file from archive.

func (*CharmArchive) Metrics Uses

func (a *CharmArchive) Metrics() *Metrics

Metrics returns the Metrics representing the metrics.yaml file for the charm archive.

func (*CharmArchive) Revision Uses

func (a *CharmArchive) Revision() int

Revision returns the revision number for the charm expanded in dir.

func (*CharmArchive) SetRevision Uses

func (a *CharmArchive) SetRevision(revision int)

SetRevision changes the charm revision number. This affects the revision reported by Revision and the revision of the charm directory created by ExpandTo.

func (*CharmArchive) Version Uses

func (a *CharmArchive) Version() string

Version returns the VCS version representing the version file from archive.

type CharmDir Uses

type CharmDir struct {
    Path string
    // contains filtered or unexported fields
}

The CharmDir type encapsulates access to data and operations on a charm directory.

func ReadCharmDir Uses

func ReadCharmDir(path string) (dir *CharmDir, err error)

ReadCharmDir returns a CharmDir representing an expanded charm directory.

func (*CharmDir) Actions Uses

func (dir *CharmDir) Actions() *Actions

Actions returns the Actions representing the actions.yaml file for the charm expanded in dir.

func (*CharmDir) ArchiveTo Uses

func (dir *CharmDir) ArchiveTo(w io.Writer) error

ArchiveTo creates a charm file from the charm expanded in dir. By convention a charm archive should have a ".charm" suffix.

func (*CharmDir) Config Uses

func (dir *CharmDir) Config() *Config

Config returns the Config representing the config.yaml file for the charm expanded in dir.

func (*CharmDir) LXDProfile Uses

func (dir *CharmDir) LXDProfile() *LXDProfile

LXDProfile returns the LXDProfile representing the lxd-profile.yaml file for the charm expanded in dir.

func (*CharmDir) MaybeGenerateVersionString Uses

func (dir *CharmDir) MaybeGenerateVersionString(logger Logger) (string, string, error)

MaybeGenerateVersionString generates charm version string. We want to know whether parent folders use one of these vcs, that's why we try to execute each one of them The second return value is the detected vcs type.

func (*CharmDir) Meta Uses

func (dir *CharmDir) Meta() *Meta

Meta returns the Meta representing the metadata.yaml file for the charm expanded in dir.

func (*CharmDir) Metrics Uses

func (dir *CharmDir) Metrics() *Metrics

Metrics returns the Metrics representing the metrics.yaml file for the charm expanded in dir.

func (*CharmDir) Revision Uses

func (dir *CharmDir) Revision() int

Revision returns the revision number for the charm expanded in dir.

func (*CharmDir) SetDiskRevision Uses

func (dir *CharmDir) SetDiskRevision(revision int) error

SetDiskRevision does the same as SetRevision but also changes the revision file in the charm directory.

func (*CharmDir) SetRevision Uses

func (dir *CharmDir) SetRevision(revision int)

SetRevision changes the charm revision number. This affects the revision reported by Revision and the revision of the charm archived by ArchiveTo. The revision file in the charm directory is not modified.

func (*CharmDir) Version Uses

func (dir *CharmDir) Version() string

Version returns the VCS version representing the version file from archive.

type Config Uses

type Config struct {
    Options map[string]Option
}

Config represents the supported configuration options for a charm, as declared in its config.yaml file.

func NewConfig Uses

func NewConfig() *Config

NewConfig returns a new Config without any options.

func ReadConfig Uses

func ReadConfig(r io.Reader) (*Config, error)

ReadConfig reads a Config in YAML format.

func (*Config) DefaultSettings Uses

func (c *Config) DefaultSettings() Settings

DefaultSettings returns settings containing the default value of every option in the config. Default values may be nil.

func (*Config) FilterSettings Uses

func (c *Config) FilterSettings(settings Settings) Settings

FilterSettings returns the subset of the supplied settings that are valid.

func (*Config) ParseSettingsStrings Uses

func (c *Config) ParseSettingsStrings(values map[string]string) (Settings, error)

ParseSettingsStrings returns settings derived from the supplied map. Every value in the map must be parseable to the correct type for the option identified by its key. Empty values are interpreted as nil.

func (*Config) ParseSettingsYAML Uses

func (c *Config) ParseSettingsYAML(yamlData []byte, key string) (Settings, error)

ParseSettingsYAML returns settings derived from the supplied YAML data. The YAML must unmarshal to a map of strings to settings data; the supplied key must be present in the map, and must point to a map in which every value must have, or be a string parseable to, the correct type for the associated config option. Empty strings and nil values are both interpreted as nil.

func (*Config) ValidateSettings Uses

func (c *Config) ValidateSettings(settings Settings) (Settings, error)

ValidateSettings returns a copy of the supplied settings with a consistent type for each value. It returns an error if the settings contain unknown keys or invalid values.

type Deployment Uses

type Deployment struct {
    DeploymentType DeploymentType `bson:"type"`
    ServiceType    ServiceType    `bson:"service"`
    MinVersion     string         `bson:"min-version"`
}

Deployment represents a charm's deployment requirements in the charm metadata.yaml file.

type DeploymentType Uses

type DeploymentType string

DeploymentType defines a deployment type.

const (
    DeploymentStateless DeploymentType = "stateless"
    DeploymentStateful  DeploymentType = "stateful"
    DeploymentDaemon    DeploymentType = "daemon"
)

type Device Uses

type Device struct {
    // Name is the name of the device.
    Name string `bson:"name"`

    // Description is a description of the device.
    Description string `bson:"description"`

    // Type is the device type.
    // currently supported types are
    // - gpu
    // - nvidia.com/gpu
    // - amd.com/gpu
    Type DeviceType `bson:"type"`

    // CountMin is the min number of devices that the charm requires.
    CountMin int64 `bson:"countmin"`

    // CountMax is the max number of devices that the charm requires.
    CountMax int64 `bson:"countmax"`
}

Device represents a charm's device requirement (GPU for example).

type DeviceType Uses

type DeviceType string

DeviceType defines a device type.

type ExtraBinding Uses

type ExtraBinding struct {
    Name string `bson:"name" json:"Name"`
}

ExtraBinding represents an extra bindable endpoint that is not a relation.

type FieldPresenceMap Uses

type FieldPresenceMap map[interface{}]interface{}

FieldPresenceMap indicates which keys of a parsed bundle yaml document were present when the document was parsed. This map is used by the overlay merge code to figure out whether empty/nil field values were actually specified as such in the yaml document.

type LXDProfile Uses

type LXDProfile struct {
    Config      map[string]string            `json:"config" yaml:"config"`
    Description string                       `json:"description" yaml:"description"`
    Devices     map[string]map[string]string `json:"devices" yaml:"devices"`
}

LXDProfile is the same as ProfilePut defined in github.com/lxc/lxd/shared/api/profile.go

func NewLXDProfile Uses

func NewLXDProfile() *LXDProfile

func ReadLXDProfile Uses

func ReadLXDProfile(r io.Reader) (*LXDProfile, error)

ReadLXDProfile reads in a LXDProfile from a charm's lxd-profile.yaml. It is not validated at this point so that the caller can choose to override any validation.

func (*LXDProfile) Empty Uses

func (profile *LXDProfile) Empty() bool

Empty returns true if neither devices nor config have been defined in the profile.

func (*LXDProfile) ValidateConfigDevices Uses

func (profile *LXDProfile) ValidateConfigDevices() error

ValidateConfigDevices validates the Config and Devices properties of the LXDProfile. WhiteList devices: unix-char, unix-block, gpu, usb. BlackList config: boot*, limits* and migration*. An empty profile will not return an error.

type LXDProfiler Uses

type LXDProfiler interface {
    // LXDProfile returns the LXDProfile found in lxd-profile.yaml of the charm
    LXDProfile() *LXDProfile
}

type Location Uses

type Location interface {
    Path() string
    String() string
}

Location represents a charm location, which must declare a path component and a string representaion.

type Logger Uses

type Logger interface {
    Warningf(message string, args ...interface{})
    Debugf(message string, args ...interface{})
    Errorf(message string, args ...interface{})
    Tracef(message string, args ...interface{})
    Infof(message string, args ...interface{})
}

Logger represents the logging methods called.

type MachineSpec Uses

type MachineSpec struct {
    Constraints string            `bson:",omitempty" json:",omitempty" yaml:",omitempty"`
    Annotations map[string]string `bson:",omitempty" json:",omitempty" yaml:",omitempty"`
    Series      string            `bson:",omitempty" json:",omitempty" yaml:",omitempty"`
}

MachineSpec represents a notional machine that will be mapped onto an actual machine at bundle deployment time.

type Meta Uses

type Meta struct {
    Name           string                   `bson:"name" json:"Name"`
    Summary        string                   `bson:"summary" json:"Summary"`
    Description    string                   `bson:"description" json:"Description"`
    Subordinate    bool                     `bson:"subordinate" json:"Subordinate"`
    Provides       map[string]Relation      `bson:"provides,omitempty" json:"Provides,omitempty"`
    Requires       map[string]Relation      `bson:"requires,omitempty" json:"Requires,omitempty"`
    Peers          map[string]Relation      `bson:"peers,omitempty" json:"Peers,omitempty"`
    ExtraBindings  map[string]ExtraBinding  `bson:"extra-bindings,omitempty" json:"ExtraBindings,omitempty"`
    Categories     []string                 `bson:"categories,omitempty" json:"Categories,omitempty"`
    Tags           []string                 `bson:"tags,omitempty" json:"Tags,omitempty"`
    Series         []string                 `bson:"series,omitempty" json:"SupportedSeries,omitempty"`
    Storage        map[string]Storage       `bson:"storage,omitempty" json:"Storage,omitempty"`
    Devices        map[string]Device        `bson:"devices,omitempty" json:"Devices,omitempty"`
    Deployment     *Deployment              `bson:"deployment,omitempty" json:"Deployment,omitempty"`
    PayloadClasses map[string]PayloadClass  `bson:"payloadclasses,omitempty" json:"PayloadClasses,omitempty"`
    Resources      map[string]resource.Meta `bson:"resources,omitempty" json:"Resources,omitempty"`
    Terms          []string                 `bson:"terms,omitempty" json:"Terms,omitempty"`
    MinJujuVersion version.Number           `bson:"min-juju-version,omitempty" json:"min-juju-version,omitempty"`
}

Meta represents all the known content that may be defined within a charm's metadata.yaml file. Note: Series is serialised for backward compatibility as "supported-series" because a previous charm version had an incompatible Series field that was unused in practice but still serialized. This only applies to JSON because Meta has a custom YAML marshaller.

func ReadMeta Uses

func ReadMeta(r io.Reader) (*Meta, error)

ReadMeta reads the content of a metadata.yaml file and returns its representation.

func (Meta) Check Uses

func (meta Meta) Check() error

Check checks that the metadata is well-formed.

func (Meta) CombinedRelations Uses

func (m Meta) CombinedRelations() map[string]Relation

CombinedRelations returns all defined relations, regardless of their type in a single map.

func (Meta) Hooks Uses

func (m Meta) Hooks() map[string]bool

Hooks returns a map of all possible valid hooks, taking relations into account. It's a map to enable fast lookups, and the value is always true.

func (Meta) MarshalYAML Uses

func (m Meta) MarshalYAML() (interface{}, error)

MarshalYAML implements yaml.Marshaler (yaml.v2).

func (*Meta) UnmarshalYAML Uses

func (meta *Meta) UnmarshalYAML(f func(interface{}) error) error

type Metric Uses

type Metric struct {
    Type        MetricType `yaml:"type"`
    Description string     `yaml:"description"`
}

Metric represents a single metric definition

type MetricType Uses

type MetricType string

MetricType is used to identify metric types supported by juju.

const (

    // Supported metric types.
    MetricTypeGauge    MetricType = "gauge"
    MetricTypeAbsolute MetricType = "absolute"
)

type Metrics Uses

type Metrics struct {
    Metrics map[string]Metric `yaml:"metrics"`
    Plan    *Plan             `yaml:"plan,omitempty"`
}

Metrics contains the metrics declarations encoded in the metrics.yaml file.

func ReadMetrics Uses

func ReadMetrics(r io.Reader) (*Metrics, error)

ReadMetrics reads a MetricsDeclaration in YAML format.

func (Metrics) PlanRequired Uses

func (m Metrics) PlanRequired() bool

PlanRequired reports whether these metrics require a plan.

func (Metrics) ValidateMetric Uses

func (m Metrics) ValidateMetric(name, value string) error

ValidateMetric validates the supplied metric name and value against the loaded metric definitions.

type NopLogger Uses

type NopLogger struct {
}

NopLogger is used to stop our logger from logging

func (NopLogger) Debugf Uses

func (m NopLogger) Debugf(message string, args ...interface{})

func (NopLogger) Errorf Uses

func (m NopLogger) Errorf(message string, args ...interface{})

func (NopLogger) Infof Uses

func (m NopLogger) Infof(message string, args ...interface{})

func (NopLogger) Tracef Uses

func (m NopLogger) Tracef(message string, args ...interface{})

func (NopLogger) Warningf Uses

func (m NopLogger) Warningf(message string, args ...interface{})

type OfferSpec Uses

type OfferSpec struct {
    // The list of endpoints exposed via the offer.
    Endpoints []string `bson:"endpoints" json:"endpoints" yaml:"endpoints" source:"overlay-only"`

    // The access control list for this offer. The keys are users and the
    // values are access permissions.
    ACL map[string]string `bson:"acl,omitempty" json:"acl,omitempty" yaml:"acl,omitempty" source:"overlay-only"`
}

OfferSpec describes an offer for a particular application.

type OfferURL Uses

type OfferURL struct {
    // Source represents where the offer is hosted.
    // If empty, the model is another model in the same controller.
    Source string // "<controller-name>" or "<jaas>" or ""

    // User is the user whose namespace in which the offer is made.
    // Where a model is specified, the user is the model owner.
    User string

    // ModelName is the name of the model providing the exported endpoints.
    // It is only used for local URLs or for specifying models in the same
    // controller.
    ModelName string

    // ApplicationName is the name of the application providing the exported endpoints.
    ApplicationName string
}

OfferURL represents the location of an offered application and its associated exported endpoints.

func ParseOfferURL Uses

func ParseOfferURL(urlStr string) (*OfferURL, error)

ParseOfferURL parses the specified URL string into an OfferURL. The URL string is of one of the forms:

<model-name>.<application-name>
<model-name>.<application-name>:<relation-name>
<user>/<model-name>.<application-name>
<user>/<model-name>.<application-name>:<relation-name>
<controller>:<user>/<model-name>.<application-name>
<controller>:<user>/<model-name>.<application-name>:<relation-name>

func (*OfferURL) AsLocal Uses

func (u *OfferURL) AsLocal() *OfferURL

AsLocal returns a copy of the URL with an empty (local) source.

func (*OfferURL) HasEndpoint Uses

func (u *OfferURL) HasEndpoint() bool

HasEndpoint returns whether this offer URL includes an endpoint name in the application name.

func (*OfferURL) Path Uses

func (u *OfferURL) Path() string

Path returns the path component of the URL.

func (*OfferURL) String Uses

func (u *OfferURL) String() string

type OfferURLParts Uses

type OfferURLParts OfferURL

OfferURLParts contains various attributes of a URL.

func ParseOfferURLParts Uses

func ParseOfferURLParts(urlStr string) (*OfferURLParts, error)

ParseOfferURLParts parses a partial URL, filling out what parts are supplied. This method is used to generate a filter used to query matching offer URLs.

type Option Uses

type Option struct {
    Type        string      `yaml:"type"`
    Description string      `yaml:"description,omitempty"`
    Default     interface{} `yaml:"default,omitempty"`
}

Option represents a single charm config option.

type PayloadClass Uses

type PayloadClass struct {
    // Name identifies the payload class.
    Name string

    // Type identifies the type of payload (e.g. kvm, docker).
    Type string
}

PayloadClass holds the information about a payload class, as stored in a charm's metadata.

func (PayloadClass) Validate Uses

func (pc PayloadClass) Validate() error

Validate checks the payload class to ensure its data is valid.

type Plan Uses

type Plan struct {
    Required bool `yaml:"required,omitempty"`
}

Plan represents the plan section of metrics.yaml

type Relation Uses

type Relation struct {
    Name      string        `bson:"name"`
    Role      RelationRole  `bson:"role"`
    Interface string        `bson:"interface"`
    Optional  bool          `bson:"optional"`
    Limit     int           `bson:"limit"`
    Scope     RelationScope `bson:"scope"`
}

Relation represents a single relation defined in the charm metadata.yaml file.

func (Relation) ImplementedBy Uses

func (r Relation) ImplementedBy(ch Charm) bool

ImplementedBy returns whether the relation is implemented by the supplied charm.

func (Relation) IsImplicit Uses

func (r Relation) IsImplicit() bool

IsImplicit returns whether the relation is supplied by juju itself, rather than by a charm.

type RelationRole Uses

type RelationRole string

RelationRole defines the role of a relation.

const (
    RoleProvider RelationRole = "provider"
    RoleRequirer RelationRole = "requirer"
    RolePeer     RelationRole = "peer"
)

type RelationScope Uses

type RelationScope string

RelationScope describes the scope of a relation.

const (
    ScopeGlobal    RelationScope = "global"
    ScopeContainer RelationScope = "container"
)

type SaasSpec Uses

type SaasSpec struct {
    URL string `bson:",omitempty" json:",omitempty" yaml:",omitempty"`
}

SaasSpec represents a single software as a service (SAAS) node. This will be mapped to consuming of offers from a bundle deployment.

type ServiceType Uses

type ServiceType string

ServiceType defines a service type.

const (
    ServiceCluster      ServiceType = "cluster"
    ServiceLoadBalancer ServiceType = "loadbalancer"
    ServiceExternal     ServiceType = "external"
    ServiceOmit         ServiceType = "omit"
)

type Settings Uses

type Settings map[string]interface{}

Settings is a group of charm config option names and values. A Settings S is considered valid by the Config C if every key in S is an option in C, and every value either has the correct type or is nil.

type Storage Uses

type Storage struct {
    // Name is the name of the store.
    //
    // Name has no default, and must be specified.
    Name string `bson:"name"`

    // Description is a description of the store.
    //
    // Description has no default, and is optional.
    Description string `bson:"description"`

    // Type is the storage type: filesystem or block-device.
    //
    // Type has no default, and must be specified.
    Type StorageType `bson:"type"`

    // Shared indicates that the storage is shared between all units of
    // an application deployed from the charm. It is an error to attempt to
    // assign non-shareable storage to a "shared" storage requirement.
    //
    // Shared defaults to false.
    Shared bool `bson:"shared"`

    // ReadOnly indicates that the storage should be made read-only if
    // possible. If the storage cannot be made read-only, Juju will warn
    // the user.
    //
    // ReadOnly defaults to false.
    ReadOnly bool `bson:"read-only"`

    // CountMin is the number of storage instances that must be attached
    // to the charm for it to be useful; the charm will not install until
    // this number has been satisfied. This must be a non-negative number.
    //
    // CountMin defaults to 1 for singleton stores.
    CountMin int `bson:"countmin"`

    // CountMax is the largest number of storage instances that can be
    // attached to the charm. If CountMax is -1, then there is no upper
    // bound.
    //
    // CountMax defaults to 1 for singleton stores.
    CountMax int `bson:"countmax"`

    // MinimumSize is the minimum size of store that the charm needs to
    // work at all. This is not a recommended size or a comfortable size
    // or a will-work-well size, just a bare minimum below which the charm
    // is going to break.
    // MinimumSize requires a unit, one of MGTPEZY, and is stored as MiB.
    //
    // There is no default MinimumSize; if left unspecified, a provider
    // specific default will be used, typically 1GB for block storage.
    MinimumSize uint64 `bson:"minimum-size"`

    // Location is the mount location for filesystem stores. For multi-
    // stores, the location acts as the parent directory for each mounted
    // store.
    //
    // Location has no default, and is optional.
    Location string `bson:"location,omitempty"`

    // Properties allow the charm author to characterise the relative storage
    // performance requirements and sensitivities for each store.
    // eg “transient” is used to indicate that non persistent storage is acceptable,
    // such as tmpfs or ephemeral instance disks.
    //
    // Properties has no default, and is optional.
    Properties []string `bson:"properties,omitempty"`
}

Storage represents a charm's storage requirement.

type StorageType Uses

type StorageType string

StorageType defines a storage type.

const (
    StorageBlock      StorageType = "block"
    StorageFilesystem StorageType = "filesystem"
)

type TermsId Uses

type TermsId struct {
    Tenant   string
    Owner    string
    Name     string
    Revision int
}

TermsId represents a single term id. The term can either be owned or "public" (meaning there is no owner). The Revision starts at 1. Therefore a value of 0 means the revision is unset.

func MustParseTerm Uses

func MustParseTerm(s string) *TermsId

MustParseTerm acts like ParseTerm but panics on error.

func ParseTerm Uses

func ParseTerm(s string) (*TermsId, error)

ParseTerm takes a termID as a string and parses it into a Term. A complete term is in the form: tenant:owner/name/revision This function accepts partially specified identifiers typically in one of the following forms: name owner/name owner/name/27 # Revision 27 name/283 # Revision 283 cs:owner/name # Tenant cs

func (*TermsId) String Uses

func (t *TermsId) String() string

String returns the term in canonical form. This would be one of:

tenant:owner/name/revision
tenant:name
owner/name/revision
owner/name
name/revision
name

func (*TermsId) Validate Uses

func (t *TermsId) Validate() error

Validate returns an error if the Term contains invalid data.

type URL Uses

type URL struct {
    Schema   string // "cs" or "local".
    User     string // "joe".
    Name     string // "wordpress".
    Revision int    // -1 if unset, N otherwise.
    Series   string // "precise" or "" if unset; "bundle" if it's a bundle.
}

URL represents a charm or bundle location:

cs:~joe/oneiric/wordpress
cs:oneiric/wordpress-42
local:oneiric/wordpress
cs:~joe/wordpress
cs:wordpress
cs:precise/wordpress-20
cs:development/precise/wordpress-20
cs:~joe/development/wordpress

func InferURL Uses

func InferURL(src, defaultSeries string) (*URL, error)

InferURL parses src as a reference, fills out the series in the returned URL using defaultSeries if necessary.

This function is deprecated. New code should use ParseURL instead.

func MustParseURL Uses

func MustParseURL(url string) *URL

MustParseURL works like ParseURL, but panics in case of errors.

func ParseURL Uses

func ParseURL(url string) (*URL, error)

ParseURL parses the provided charm URL string into its respective structure.

Additionally, fully-qualified charmstore URLs are supported; note that this currently assumes that they will map to jujucharms.com (that is, fully-qualified URLs currently map to the 'cs' schema):

https://jujucharms.com/name
https://jujucharms.com/name/series
https://jujucharms.com/name/revision
https://jujucharms.com/name/series/revision
https://jujucharms.com/u/user/name
https://jujucharms.com/u/user/name/series
https://jujucharms.com/u/user/name/revision
https://jujucharms.com/u/user/name/series/revision
https://jujucharms.com/channel/name
https://jujucharms.com/channel/name/series
https://jujucharms.com/channel/name/revision
https://jujucharms.com/channel/name/series/revision
https://jujucharms.com/u/user/channel/name
https://jujucharms.com/u/user/channel/name/series
https://jujucharms.com/u/user/channel/name/revision
https://jujucharms.com/u/user/channel/name/series/revision

A missing schema is assumed to be 'cs'.

func (*URL) GetBSON Uses

func (u *URL) GetBSON() (interface{}, error)

GetBSON turns u into a bson.Getter so it can be saved directly on a MongoDB database with mgo.

func (*URL) MarshalJSON Uses

func (u *URL) MarshalJSON() ([]byte, error)

func (*URL) MarshalText Uses

func (u *URL) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler by returning u.String()

func (URL) Path Uses

func (r URL) Path() string

func (*URL) SetBSON Uses

func (u *URL) SetBSON(raw bson.Raw) error

SetBSON turns u into a bson.Setter so it can be loaded directly from a MongoDB database with mgo.

func (URL) String Uses

func (u URL) String() string

func (*URL) UnmarshalJSON Uses

func (u *URL) UnmarshalJSON(b []byte) error

func (*URL) UnmarshalText Uses

func (u *URL) UnmarshalText(data []byte) error

UnmarshalText implements encoding.TestUnmarshaler by parsing the data with ParseURL.

func (*URL) WithRevision Uses

func (url *URL) WithRevision(revision int) *URL

WithRevision returns a URL equivalent to url but with Revision set to revision.

type UnitPlacement Uses

type UnitPlacement struct {
    // ContainerType holds the container type of the new
    // new unit, or empty if unspecified.
    ContainerType string

    // Machine holds the numeric machine id, or "new",
    // or empty if the placement specifies an application.
    Machine string

    // application holds the application name, or empty if
    // the placement specifies a machine.
    Application string

    // Unit holds the unit number of the application, or -1
    // if unspecified.
    Unit int
}

func ParsePlacement Uses

func ParsePlacement(p string) (*UnitPlacement, error)

ParsePlacement parses a unit placement directive, as specified in the To clause of an application entry in the applications section of a bundle.

type VerificationError Uses

type VerificationError struct {
    Errors []error
}

VerificationError holds an error generated by BundleData.Verify, holding all the verification errors found when verifying.

func (*VerificationError) Error Uses

func (err *VerificationError) Error() string

Directories

PathSynopsis
hookshooks provides types and constants that define the hooks known to Juju.
resource

Package charm imports 40 packages (graph) and is imported by 69 packages. Updated 2019-11-03. Refresh now. Tools for package owners.