lwcomponent

package
v1.50.0 Latest Latest
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 Go to latest Published: Apr 29, 2024 License: Apache-2.0 Imports: 31 Imported by: 0

Documentation

Overview

A development kit for the cloud based of modular components.

A Lacework component package to help facilitate the loading and execution of components

Index

Constants

View Source 
const (
	EmptyType Type = ""

	// the component is a binary
	BinaryType = "BINARY"

	// will this component be accessible via the CLI
	CommandType = "CLI_COMMAND"

	// the component is a library, only provides content for the CLI or other components
	LibraryType = "LIBRARY"

	// the component is standalone, should be available in $PATH
	StandaloneType = "STANDALONE"
)
View Source 
const (
	DefaultMaxRetry = 3
)
View Source 
const (
	DevelopmentEnv = "LW_CDK_DEV_COMPONENT"
)

Variables

View Source 
var (
	ErrNonExecutable error  = errors.New("component not executable")
	ErrRun           string = "unable to run component"
)
View Source 
var (
	VersionFile     = ".version"
	SignatureFile   = ".signature"
	InfoFile        = ".info"
	DevelopmentFile = ".dev"
)
View Source 
var (
	ErrComponentNotFound = errors.New("component not found on disk")
)

Functions

func CatalogCacheDir added in v1.34.0 

func CatalogCacheDir() (string, error)

Returns the local directory that Components will be stored in.

func CatalogV1Enabled added in v1.34.0 

func CatalogV1Enabled(client *api.Client) bool

func Dir 

func Dir() (string, error)

Dir returns the directory where the components will be stored

func DownloadFile added in v1.33.2 

func DownloadFile(path string, url string) error

Retry 3 times (4 requests total) Resty default RetryWaitTime is 100ms Exponential backoff to a maximum of RetryWaitTime of 2s

func IsNotFound 

func IsNotFound(err error) bool

IsNotFound returns a boolean indicating whether the error is known to have determined the component is not found. It is satisfied by ErrNotApplyComment

func LoadLocalComponents added in v1.45.0 

func LoadLocalComponents() (components map[string]CDKComponent, err error)

Types

type ApiInfo added in v1.34.0 

type ApiInfo struct {
	Id            int32             `json:"id"`
	Name          string            `json:"name"`
	Version       *semver.Version   `json:"version"`
	AllVersions   []*semver.Version `json:"allVersions"`
	Desc          string            `json:"desc"`
	SizeKB        int64             `json:"sizeKB"`
	Deprecated    bool              `json:"deprecated"`
	ComponentType Type              `json:"componentType"`
}

func NewAPIInfo added in v1.34.0 

func NewAPIInfo(
	id int32,
	name string,
	version *semver.Version,
	allVersions []*semver.Version,
	desc string,
	size int64,
	deprecated bool,
	componentType Type,
) *ApiInfo

type Artifact 

type Artifact struct {
	OS            string `json:"os"`
	ARCH          string `json:"arch"`
	URL           string `json:"url,omitempty"`
	Signature     string `json:"signature"`
	Version       string `json:"version"`
	UpdateMessage string `json:"updateMessage"`
}
type Breadcrumbs struct {
	InstallationMessage string `json:"installationMessage,omitempty"`
	UpdateMessage       string `json:"updateMessage,omitempty"`
}

Components should leave a trail/crumb after installation or update, these messages will be shown by the Lacework CLI

type CDKComponent added in v1.34.0 

type CDKComponent struct {
	Name           string `json:"name"`
	Description    string `json:"description"`
	Type           Type   `json:"type"`
	Status         Status `json:"-"`
	InstallMessage string `json:"-"`
	UpdateMessage  string `json:"-"`

	Exec Executer `json:"-"`

	ApiInfo  *ApiInfo  `json:"apiInfo,omitempty"`
	HostInfo *HostInfo `json:"-"`
	// contains filtered or unexported fields
}

func NewCDKComponent added in v1.34.0 

func NewCDKComponent(apiInfo *ApiInfo, hostInfo *HostInfo) CDKComponent

func (*CDKComponent) Dir added in v1.45.0 

func (c *CDKComponent) Dir() (string, error)

func (*CDKComponent) EnterDevMode added in v1.45.0 

func (c *CDKComponent) EnterDevMode() error

func (*CDKComponent) InstalledVersion added in v1.34.0 

func (c *CDKComponent) InstalledVersion() *semver.Version

func (*CDKComponent) LatestVersion added in v1.34.0 

func (c *CDKComponent) LatestVersion() *semver.Version

func (*CDKComponent) PrintSummary added in v1.34.0 

func (c *CDKComponent) PrintSummary() []string

type Catalog added in v1.34.0 

type Catalog struct {
	Components map[string]CDKComponent
	// contains filtered or unexported fields
}

func NewCachedCatalog added in v1.45.0 

func NewCachedCatalog(
	client *api.Client,
	stageConstructor StageConstructor,
	cachedComponentsApiInfo map[string]*ApiInfo,
) (*Catalog, error)

func NewCatalog added in v1.34.0 

func NewCatalog(
	client *api.Client,
	stageConstructor StageConstructor,
) (*Catalog, error)

func (*Catalog) ComponentCount added in v1.34.0 

func (c *Catalog) ComponentCount() int

func (*Catalog) Delete added in v1.34.0 

func (c *Catalog) Delete(component *CDKComponent) error

Delete a CDKComponent

Remove the Component install directory and all sub-directory. This function will not return an error if the Component is not installed.

func (*Catalog) GetComponent added in v1.34.0 

func (c *Catalog) GetComponent(name string) (*CDKComponent, error)

Return a CDKComponent that is present on the host.

func (*Catalog) Install added in v1.34.0 

func (c *Catalog) Install(component *CDKComponent) error

func (*Catalog) ListComponentVersions added in v1.34.0 

func (c *Catalog) ListComponentVersions(component *CDKComponent) ([]*semver.Version, error)

func (*Catalog) PrintComponents added in v1.34.0 

func (c *Catalog) PrintComponents() [][]string

func (*Catalog) Stage added in v1.34.0 

func (c *Catalog) Stage(
	component *CDKComponent,
	version string,
	progressClosure func(filepath string, sizeB int64)) (stageClose func(), err error)

func (*Catalog) Verify added in v1.34.0 

func (c *Catalog) Verify(component *CDKComponent) error

type Component 

type Component struct {
	Name          string         `json:"name"`
	Description   string         `json:"description"`
	Type          Type           `json:"type"`
	LatestVersion semver.Version `json:"-"`
	Artifacts     []Artifact     `json:"artifacts"`
	Breadcrumbs   Breadcrumbs    `json:"breadcrumbs,omitempty"`

	// @dhazekamp command_name required when CLICommand is true?
	CommandName string `json:"command_name,omitempty"`
}

Component can be a command-line tool, a new command that extends the Lacework CLI, or a library that contains files used by another Lacework component.

func (Component) ArtifactForRunningHost 

func (c Component) ArtifactForRunningHost(version string) (*Artifact, bool)

ArtifactForRunningHost returns the right component artifact for the running host,

func (Component) CurrentVersion 

func (c Component) CurrentVersion() (*semver.Version, error)

CurrentVersion returns the current installed version of the component

func (Component) EnterDevelopmentMode added in v0.43.0 

func (c Component) EnterDevelopmentMode() error

func (Component) IsCommandType 

func (c Component) IsCommandType() bool

func (Component) IsExecutable 

func (c Component) IsExecutable() bool

func (Component) IsInstalled 

func (c Component) IsInstalled() bool

IsInstalled returns true if the component is installed on disk

TODO: @jon-stewart: remove - is in wrong place

func (Component) ListVersions added in v1.4.0 

func (c Component) ListVersions(installed *semver.Version) string

func (Component) MakeUpdateMessage added in v1.4.0 

func (c Component) MakeUpdateMessage(from, to semver.Version) string

func (Component) MarshalJSON added in v0.43.0 

func (c Component) MarshalJSON() ([]byte, error)

func (Component) Path 

func (c Component) Path() (string, error)

Path returns the path to the component ("RootPath()/{name}")

func (Component) RootPath 

func (c Component) RootPath() (string, error)

RootPath returns the component's root path ("Dir()/{name}")

func (Component) RunAndOutput 

func (c Component) RunAndOutput(args []string, envs ...string) error

RunAndOutput runs the command and outputs to os.Stdout and os.Stderr, the provided environment variables will be accessible by the component

func (Component) RunAndReturn 

func (c Component) RunAndReturn(args []string, stdin io.Reader, envs ...string) (
	stdout string,
	stderr string,
	err error,
)

RunAndReturn runs the command and returns its standard output and standard error, the provided environment variables will be accessible by the component

func (Component) SignatureFromDisk 

func (c Component) SignatureFromDisk() ([]byte, error)

SignatureFromDisk returns the component signature stored on disk ("RootPath()/.signature")

func (Component) Status 

func (c Component) Status() Status

Status returns the component status

func (Component) UnderDevelopment added in v0.43.0 

func (c Component) UnderDevelopment() bool

UnderDevelopment returns true if the component is under development that is, if the component root path has the '.dev' specs file or, if the environment variable 'LW_CDK_DEV_COMPONENT' matches the component name

func (*Component) UnmarshalJSON added in v0.43.0 

func (c *Component) UnmarshalJSON(data []byte) error

func (Component) UpdateAvailable 

func (c Component) UpdateAvailable() (bool, error)

UpdateAvailable returns true if there is a newer version of the component

func (Component) WriteSignature 

func (c Component) WriteSignature(signature []byte) error

WriteSignature stores the component signature on disk

func (Component) WriteVersion 

func (c Component) WriteVersion(installed string) error

WriteVersion stores the component version on disk

type DevInfo added in v1.41.0 

type DevInfo struct {
	ComponentType Type
	Desc          string
	Name          string
	Version       string
}

type Executer added in v1.34.0 

type Executer interface {
	Executable() bool

	Execute(args []string, envs ...string) (stdout string, stderr string, err error)

	ExecuteInline(args []string, envs ...string) (err error)

	Path() string
}

func NewExecuable added in v1.34.0 

func NewExecuable(name string, dir string) Executer

type HostInfo added in v1.34.0 

type HostInfo struct {
	Name          string `json:"name"`
	ComponentType Type   `json:"type"`
	Desc          string `json:"description"`
	Dir           string `json:"-"`
}

func LoadHostInfo added in v1.47.0 

func LoadHostInfo(dir string) (*HostInfo, error)

func NewHostInfo added in v1.34.0 

func NewHostInfo(dir string, desc string, componentType Type) (*HostInfo, error)

func (*HostInfo) Delete added in v1.34.0 

func (h *HostInfo) Delete() error

func (*HostInfo) Development added in v1.34.0 

func (h *HostInfo) Development() bool

func (*HostInfo) Signature added in v1.34.0 

func (h *HostInfo) Signature() (sig []byte, err error)

func (*HostInfo) Validate added in v1.34.0 

func (h *HostInfo) Validate() (err error)

func (*HostInfo) Version added in v1.34.0 

func (h *HostInfo) Version() (version *semver.Version, err error)

type Library 

type Library interface {

	// Install downloads the library and deploys the files and index
	Install() error

	// Index returns the index of files that the library contains
	Index() []string

	// GetFile returns the content of one file from the library
	GetFile(string) ([]byte, error)
}

A library component provides one or more files that other components use

type RunError added in v0.45.0 

type RunError struct {
	ExitCode int
	Message  string
	Err      error
}

RunError is a struct used to pass an error when a component tries to run and it fails, a few functions will return this error so that callers (upstream packages) can unwrap and identify that the error comes from this package

func (*RunError) Error added in v0.45.0 

func (e *RunError) Error() string

func (*RunError) Unwrap added in v0.45.0 

func (e *RunError) Unwrap() error

type StageConstructor added in v1.34.0 

type StageConstructor func(name, artifactUrl string, size int64) (stage Stager, err error)

type Stager added in v1.34.0 

type Stager interface {
	Close()

	Commit(string) error

	Directory() string

	Download(progressClosure func(filepath string, sizeB int64)) error

	Filename() string

	Signature() (sig []byte, err error)

	Unpack() error

	Validate() error
}

func NewStageTarGz added in v1.34.0 

func NewStageTarGz(name, artifactUrl string, size int64) (stage Stager, err error)

type State 

type State struct {
	Version    string      `json:"version"`
	Components []Component `json:"components"`
}

State holds the components specification

You can load the state from the Lacework API server by passing an `api.Client`. 

client, err := api.NewClient(account, opts...)
cState, err := lwcomponent.LoadState(client)

Or, you can load the state from the local storage. 

cState, err := lwcomponent.LocalState()

func LoadState 

func LoadState(client *api.Client) (*State, error)

LoadState loads the state from the Lacework API server

func LocalState 

func LocalState() (*State, error)

LocalState loads the state from the local storage ("Dir()/state")

func (State) GetComponent 

func (s State) GetComponent(name string) (*Component, bool)

GetComponent returns the pointer of a component, if the component is not found, this function will return a `nil` pointer and `false`

Usage: 

component, found := state.GetComponent(name)

if !found {
	fmt.Println("Component %s not found", name)
}

func (State) Install 

func (s State) Install(component *Component, version string, progressClosure func(path string, sizeB int64)) error

func (State) Verify added in v1.33.0 

func (s State) Verify(component *Component, version string) error

func (State) WriteState 

func (s State) WriteState() error

WriteState stores the components state to disk

type Status 

type Status int
const (
	UnknownStatus Status = iota
	Development
	NotInstalled
	NotInstalledDeprecated
	Installed
	InstalledDeprecated
	UpdateAvailable
	Tainted
)

func (Status) Color added in v1.34.0 

func (s Status) Color() *color.Color

func (Status) String 

func (s Status) String() string

type Type 

type Type string

Source Files

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