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Published: Jul 27, 2020 | License: MIT | Module:


Package cmd is the front-end interface for the application as a command-line utility.


KeyStoreAuthenticator prompts the user for their password, which is used to unlock their keystore file to interact with the Ethereum blockchain. Since multiple keystore files can exist at the configured directory, the KeyStoreAuthenticator will try the password on all keystore files present.


Client is how the application is invoked from the command line. When you run the binary, for example `./chainlink n`, client.RunNode is called to start the Chainlink core. Similarly, running `./chainlink j` returns information on all jobs in the node, and `./chainlink s` with another argument as a JobID gives information specific to that job.


Renderer helps format and display data (based on the kind of data it is) to the command line.



var (
	// ErrorNoAPICredentialsAvailable is returned when not run from a terminal
	// and no API credentials have been provided
	ErrorNoAPICredentialsAvailable = errors.New("API credentials must be supplied")

func InitEnclave

func InitEnclave() error

InitEnclave is a stub in non SGX enabled builds.

func NewApp

func NewApp(client *Client) *cli.App

NewApp returns the command-line parser/function-router for the given client

type APIInitializer

type APIInitializer interface {
	// Initialize creates a new user for API access, or does nothing if one exists.
	Initialize(store *store.Store) (models.User, error)

APIInitializer is the interface used to create the API User credentials needed to access the API. Does nothing if API user already exists.

func NewFileAPIInitializer

func NewFileAPIInitializer(file string) APIInitializer

NewFileAPIInitializer creates a concrete instance of APIInitializer that pulls API user credentials from the passed file path.

func NewPromptingAPIInitializer

func NewPromptingAPIInitializer(prompter Prompter) APIInitializer

NewPromptingAPIInitializer creates a concrete instance of APIInitializer that uses the terminal to solicit credentials from the user.

type AppFactory

type AppFactory interface {
	NewApplication(*orm.Config, ...func(chainlink.Application)) chainlink.Application

AppFactory implements the NewApplication method.

type ChainlinkAppFactory

type ChainlinkAppFactory struct{}

ChainlinkAppFactory is used to create a new Application.

func (ChainlinkAppFactory) NewApplication

func (n ChainlinkAppFactory) NewApplication(config *orm.Config, onConnectCallbacks ...func(chainlink.Application)) chainlink.Application

NewApplication returns a new instance of the node with the given config.

type ChainlinkRunner

type ChainlinkRunner struct{}

ChainlinkRunner is used to run the node application.

func (ChainlinkRunner) Run

func (n ChainlinkRunner) Run(app chainlink.Application) error

Run sets the log level based on config and starts the web router to listen for input and return data.

type ChangePasswordPrompter

type ChangePasswordPrompter interface {
	Prompt() (models.ChangePasswordRequest, error)

ChangePasswordPrompter is an interface primarily used for DI to obtain a password change request from the User.

func NewChangePasswordPrompter

func NewChangePasswordPrompter() ChangePasswordPrompter

NewChangePasswordPrompter returns the production password change request prompter

type Client

type Client struct {
	Config                         *orm.Config
	AppFactory                     AppFactory
	KeyStoreAuthenticator          KeyStoreAuthenticator
	FallbackAPIInitializer         APIInitializer
	Runner                         Runner
	HTTP                           HTTPClient
	CookieAuthenticator            CookieAuthenticator
	FileSessionRequestBuilder      SessionRequestBuilder
	PromptingSessionRequestBuilder SessionRequestBuilder
	ChangePasswordPrompter         ChangePasswordPrompter
	PasswordPrompter               PasswordPrompter

Client is the shell for the node, local commands and remote commands.

func (*Client) ArchiveJobSpec

func (cli *Client) ArchiveJobSpec(c *clipkg.Context) error

ArchiveJobSpec soft deletes a job and its associated runs.

func (*Client) CancelJobRun

func (cli *Client) CancelJobRun(c *clipkg.Context) error

CancelJob cancels a running job

func (*Client) ChangePassword

func (cli *Client) ChangePassword(c *clipkg.Context) (err error)

ChangePassword prompts the user for the old password and a new one, then posts it to Chainlink to change the password.

func (*Client) CreateAndExportWeakVRFKey

func (cli *Client) CreateAndExportWeakVRFKey(c *clipkg.Context) error

CreateAndExportWeakVRFKey creates a key in the VRF keystore, protected by the password in the password file, but with weak key-derivation-function parameters, which makes it cheaper for testing, but also more vulnerable to bruteforcing of the encrypted key material. For testing purposes only!

The key is only stored at the specified file location, not stored in the DB.

func (*Client) CreateBridge

func (cli *Client) CreateBridge(c *clipkg.Context) (err error)

CreateBridge adds a new bridge to the chainlink node

func (*Client) CreateExternalInitiator

func (cli *Client) CreateExternalInitiator(c *clipkg.Context) (err error)

CreateExternalInitiator adds an external initiator

func (*Client) CreateExtraKey

func (cli *Client) CreateExtraKey(c *clipkg.Context) (err error)

CreateExtraKey creates a new ethereum key with the same password as the one used to unlock the existing key.

func (*Client) CreateJobRun

func (cli *Client) CreateJobRun(c *clipkg.Context) (err error)

CreateJobRun creates job run based on SpecID and optional JSON

func (*Client) CreateJobSpec

func (cli *Client) CreateJobSpec(c *clipkg.Context) (err error)

CreateJobSpec creates a JobSpec based on JSON input

func (*Client) CreateServiceAgreement

func (cli *Client) CreateServiceAgreement(c *clipkg.Context) (err error)

CreateServiceAgreement creates a ServiceAgreement based on JSON input

func (*Client) CreateVRFKey

func (cli *Client) CreateVRFKey(c *clipkg.Context) error

CreateVRFKey creates a key in the VRF keystore, protected by the password in the password file

func (*Client) DeleteExternalInitiator

func (cli *Client) DeleteExternalInitiator(c *clipkg.Context) (err error)

DeleteExternalInitiator removes an external initiator

func (*Client) DeleteUser

func (cli *Client) DeleteUser(c *clipkg.Context) (err error)

DeleteUser is run locally to remove the User row from the node's database.

func (*Client) DeleteVRFKey

func (cli *Client) DeleteVRFKey(c *clipkg.Context) error

DeleteVRFKey deletes the VRF key with given public key from the db

Since this runs in an independent process from any chainlink node, it cannot cause running nodes to forget the key, if they already have it unlocked.

func (*Client) DisplayAccountBalance

func (cli *Client) DisplayAccountBalance(c *clipkg.Context) (err error)

DisplayAccountBalance renders a table containing the active account address with it's ETH & LINK balance

func (*Client) ExportVRFKey

func (cli *Client) ExportVRFKey(c *clipkg.Context) error

ExportVRFKey saves encrypted copy of VRF key with given public key to requested file path.

func (*Client) GetConfiguration

func (cli *Client) GetConfiguration(c *clipkg.Context) (err error)

GetConfiguration gets the nodes environment variables

func (*Client) ImportKey

func (cli *Client) ImportKey(c *clipkg.Context) error

ImportKey imports a key to be used with the chainlink node

func (*Client) ImportVRFKey

func (cli *Client) ImportVRFKey(c *clipkg.Context) error

ImportVRFKey reads a file into an EncryptedSecretKey in the db

func (*Client) IndexBridges

func (cli *Client) IndexBridges(c *clipkg.Context) (err error)

IndexBridges returns all bridges.

func (*Client) IndexJobRuns

func (cli *Client) IndexJobRuns(c *clipkg.Context) error

IndexJobRuns returns the list of all job runs for a specific job if no jobid is passed, defaults to returning all jobruns

func (*Client) IndexJobSpecs

func (cli *Client) IndexJobSpecs(c *clipkg.Context) error

IndexJobSpecs returns all job specs.

func (*Client) IndexTransactions

func (cli *Client) IndexTransactions(c *clipkg.Context) error

IndexTransactions returns the list of transactions in descending order, taking an optional page parameter

func (*Client) IndexTxAttempts

func (cli *Client) IndexTxAttempts(c *clipkg.Context) error

IndexTxAttempts returns the list of transactions in descending order, taking an optional page parameter

func (*Client) ListKeys

func (cli *Client) ListKeys(c *clipkg.Context) error

ListKeys Lists the keys in the db

func (*Client) PrepareTestDatabase

func (cli *Client) PrepareTestDatabase(c *clipkg.Context) error

PrepareTestDatabase calls ResetDatabase then loads fixtures required for tests

func (*Client) RebroadcastTransactions

func (cli *Client) RebroadcastTransactions(c *clipkg.Context) (err error)

RebroadcastTransactions run locally to force manual rebroadcasting of transactions in a given nonce range. This MUST NOT be run concurrently with the node. Currently the advisory lock in FindAllTxsInNonceRange prevents this.

func (*Client) RemoteLogin

func (cli *Client) RemoteLogin(c *clipkg.Context) error

RemoteLogin creates a cookie session to run remote commands.

func (*Client) RemoveBridge

func (cli *Client) RemoveBridge(c *clipkg.Context) (err error)

RemoveBridge removes a specific Bridge by name.

func (*Client) ResetDatabase

func (cli *Client) ResetDatabase(c *clipkg.Context) error

ResetDatabase drops, creates and migrates the database specified by DATABASE_URL This is useful to setup the database for testing

func (*Client) RunNode

func (cli *Client) RunNode(c *clipkg.Context) error

RunNode starts the Chainlink core.

func (*Client) SendEther

func (cli *Client) SendEther(c *clipkg.Context) (err error)

SendEther transfers ETH from the node's account to a specified address.

func (*Client) SetMinimumGasPrice

func (cli *Client) SetMinimumGasPrice(c *clipkg.Context) (err error)

SetMinimumGasPrice specifies the minimum gas price to use for outgoing transactions

func (*Client) SetNextNonce

func (cli *Client) SetNextNonce(c *clipkg.Context) error

SetNextNonce manually updates the keys.next_nonce field for the given key with the given nonce value

func (*Client) ShowBridge

func (cli *Client) ShowBridge(c *clipkg.Context) (err error)

ShowBridge returns the info for the given Bridge name.

func (*Client) ShowJobRun

func (cli *Client) ShowJobRun(c *clipkg.Context) (err error)

ShowJobRun returns the status of the given Jobrun.

func (*Client) ShowJobSpec

func (cli *Client) ShowJobSpec(c *clipkg.Context) (err error)

ShowJobSpec returns the status of the given JobID.

func (*Client) ShowTransaction

func (cli *Client) ShowTransaction(c *clipkg.Context) (err error)

ShowTransaction returns the info for the given transaction hash

type CookieAuthenticator

type CookieAuthenticator interface {
	Cookie() (*http.Cookie, error)
	Authenticate(models.SessionRequest) (*http.Cookie, error)

CookieAuthenticator is the interface to generating a cookie to authenticate future HTTP requests.

func NewSessionCookieAuthenticator

func NewSessionCookieAuthenticator(config *orm.Config, store CookieStore) CookieAuthenticator

NewSessionCookieAuthenticator creates a SessionCookieAuthenticator using the passed config and builder.

type CookieStore

type CookieStore interface {
	Save(cookie *http.Cookie) error
	Retrieve() (*http.Cookie, error)

CookieStore is a place to store and retrieve cookies.

type DiskCookieStore

type DiskCookieStore struct {
	Config *orm.Config

DiskCookieStore saves a single cookie in the local cli working directory.

func (DiskCookieStore) Retrieve

func (d DiskCookieStore) Retrieve() (*http.Cookie, error)

Retrieve returns any Saved cookies.

func (DiskCookieStore) Save

func (d DiskCookieStore) Save(cookie *http.Cookie) error

Save stores a cookie.

type HTTPClient

type HTTPClient interface {
	Get(string,[string]string) (*http.Response, error)
	Post(string, io.Reader) (*http.Response, error)
	Put(string, io.Reader) (*http.Response, error)
	Patch(string, io.Reader,[string]string) (*http.Response, error)
	Delete(string) (*http.Response, error)

HTTPClient encapsulates all methods used to interact with a chainlink node API.

func NewAuthenticatedHTTPClient

func NewAuthenticatedHTTPClient(config orm.ConfigReader, cookieAuth CookieAuthenticator) HTTPClient

NewAuthenticatedHTTPClient uses the CookieAuthenticator to generate a sessionID which is then used for all subsequent HTTP API requests.

type KeyStoreAuthenticator

type KeyStoreAuthenticator interface {
	Authenticate(*store.Store, string) (string, error)
	AuthenticateVRFKey(*store.Store, string) error

KeyStoreAuthenticator implements the Authenticate method for the store and a password string.

type MemoryCookieStore

type MemoryCookieStore struct {
	Cookie *http.Cookie

MemoryCookieStore keeps a single cookie in memory

func (*MemoryCookieStore) Retrieve

func (m *MemoryCookieStore) Retrieve() (*http.Cookie, error)

Retrieve returns any Saved cookies.

func (*MemoryCookieStore) Save

func (m *MemoryCookieStore) Save(cookie *http.Cookie) error

Save stores a cookie.

type PasswordPrompter

type PasswordPrompter interface {
	Prompt() string

PasswordPrompter is an interface primarily used for DI to obtain a password from the User.

func NewPasswordPrompter

func NewPasswordPrompter() PasswordPrompter

NewPasswordPrompter returns the production password change request prompter

type Prompter

type Prompter interface {
	Prompt(string) string
	PasswordPrompt(string) string
	IsTerminal() bool

Prompter implements the Prompt function to be used to display at the console.

func NewTerminalPrompter

func NewTerminalPrompter() Prompter

NewTerminalPrompter prompts the user via terminal.

type Renderer

type Renderer interface {
	Render(interface{}) error

Renderer implements the Render method.

type RendererJSON

type RendererJSON struct {

RendererJSON is used to render JSON data.

func (RendererJSON) Render

func (rj RendererJSON) Render(v interface{}) error

Render writes the given input as a JSON string.

type RendererTable

type RendererTable struct {

RendererTable is used for data to be rendered as a table.

func (RendererTable) Render

func (rt RendererTable) Render(v interface{}) error

Render returns a formatted table of text for a given Job or presenter and relevant information.

type Runner

type Runner interface {
	Run(chainlink.Application) error

Runner implements the Run method.

type SessionCookieAuthenticator

type SessionCookieAuthenticator struct {
	// contains filtered or unexported fields

SessionCookieAuthenticator is a concrete implementation of CookieAuthenticator that retrieves a session id for the user with credentials from the session request.

func (*SessionCookieAuthenticator) Authenticate

func (t *SessionCookieAuthenticator) Authenticate(sessionRequest models.SessionRequest) (*http.Cookie, error)

Authenticate retrieves a session ID via a cookie and saves it to disk.

func (*SessionCookieAuthenticator) Cookie

func (t *SessionCookieAuthenticator) Cookie() (*http.Cookie, error)

Cookie Returns the previously saved authentication cookie.

type SessionRequestBuilder

type SessionRequestBuilder interface {
	Build(flag string) (models.SessionRequest, error)

SessionRequestBuilder is an interface that returns a SessionRequest, abstracting how session requests are generated, whether they be from the prompt or from a file.

func NewFileSessionRequestBuilder

func NewFileSessionRequestBuilder() SessionRequestBuilder

NewFileSessionRequestBuilder pulls credentials from a file to generate a SessionRequest.

func NewPromptingSessionRequestBuilder

func NewPromptingSessionRequestBuilder(prompter Prompter) SessionRequestBuilder

NewPromptingSessionRequestBuilder uses a prompter, often via terminal, to solicit information from a user to generate the SessionRequest.

type TerminalKeyStoreAuthenticator

type TerminalKeyStoreAuthenticator struct {
	Prompter Prompter

TerminalKeyStoreAuthenticator contains fields for prompting the user and an exit code.

func (TerminalKeyStoreAuthenticator) Authenticate

func (auth TerminalKeyStoreAuthenticator) Authenticate(store *store.Store, pwd string) (string, error)

Authenticate checks to see if there are accounts present in the KeyStore, and if there are none, a new account will be created by prompting for a password. If there are accounts present, the account which is unlocked by the given password will be used.

func (TerminalKeyStoreAuthenticator) AuthenticateVRFKey

func (auth TerminalKeyStoreAuthenticator) AuthenticateVRFKey(store *store.Store,
	password string) error

AuthenticateVRFKey creates an encrypted VRF key protected by password in store's db if db store has no extant keys. It unlocks at least one VRF key with given password, or returns an error. password must be non-trivial, as an empty password signifies that the VRF oracle functionality is disabled.

Package Files

Documentation was rendered with GOOS=linux and GOARCH=amd64.

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