configuration

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 Go to latest Published: Mar 18, 2024 License: Apache-2.0 Imports: 12 Imported by: 0

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Constants

This section is empty.

Variables

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var CurrentVersion = MajorMinorVersion(0, 1)

CurrentVersion is the most recent Version that can be parsed

Functions

This section is empty.

Types

type Auth 

type Auth map[string]Parameters

Auth defines the configuration for registry authorization.

func (Auth) MarshalYAML 

func (auth Auth) MarshalYAML() (interface{}, error)

MarshalYAML implements the yaml.Marshaler interface

func (Auth) Parameters 

func (auth Auth) Parameters() Parameters

Parameters returns the Parameters map for an Auth configuration

func (Auth) Type 

func (auth Auth) Type() string

Type returns the auth type, such as htpasswd or token

func (*Auth) UnmarshalYAML 

func (auth *Auth) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML implements the yaml.Unmarshaler interface Unmarshals a single item map into a Storage or a string into a Storage type with no parameters

type Catalog 

type Catalog struct {
	// Max number of entries returned by the catalog endpoint. Requesting n entries
	// to the catalog endpoint will return at most MaxEntries entries.
	// An empty or a negative value will set a default of 1000 maximum entries by default.
	MaxEntries int `yaml:"maxentries,omitempty"`
}

Catalog is composed of MaxEntries. Catalog endpoint (/v2/_catalog) configuration, it provides the configuration options to control the maximum number of entries returned by the catalog endpoint.

type Configuration 

type Configuration struct {
	// Version is the version which defines the format of the rest of the configuration
	Version Version `yaml:"version"`

	// Log supports setting various parameters related to the logging
	// subsystem.
	Log struct {
		// AccessLog configures access logging.
		AccessLog struct {
			// Disabled disables access logging.
			Disabled bool `yaml:"disabled,omitempty"`
		} `yaml:"accesslog,omitempty"`

		// Level is the granularity at which registry operations are logged.
		Level Loglevel `yaml:"level,omitempty"`

		// Formatter overrides the default formatter with another. Options
		// include "text", "json" and "logstash".
		Formatter string `yaml:"formatter,omitempty"`

		// Fields allows users to specify static string fields to include in
		// the logger context.
		Fields map[string]interface{} `yaml:"fields,omitempty"`

		// Hooks allows users to configure the log hooks, to enabling the
		// sequent handling behavior, when defined levels of log message emit.
		Hooks []LogHook `yaml:"hooks,omitempty"`

		// ReportCaller allows user to configure the log to report the caller
		ReportCaller bool `yaml:"reportcaller,omitempty"`
	}

	// Loglevel is the level at which registry operations are logged.
	//
	// Deprecated: Use Log.Level instead.
	Loglevel Loglevel `yaml:"loglevel,omitempty"`

	// Storage is the configuration for the registry's storage driver
	Storage Storage `yaml:"storage"`

	// Auth allows configuration of various authorization methods that may be
	// used to gate requests.
	Auth Auth `yaml:"auth,omitempty"`

	// Middleware lists all middlewares to be used by the registry.
	Middleware map[string][]Middleware `yaml:"middleware,omitempty"`

	// HTTP contains configuration parameters for the registry's http
	// interface.
	HTTP struct {
		// Addr specifies the bind address for the registry instance.
		Addr string `yaml:"addr,omitempty"`

		// Net specifies the net portion of the bind address. A default empty value means tcp.
		Net string `yaml:"net,omitempty"`

		// Host specifies an externally-reachable address for the registry, as a fully
		// qualified URL.
		Host string `yaml:"host,omitempty"`

		Prefix string `yaml:"prefix,omitempty"`

		// Secret specifies the secret key which HMAC tokens are created with.
		Secret string `yaml:"secret,omitempty"`

		// RelativeURLs specifies that relative URLs should be returned in
		// Location headers
		RelativeURLs bool `yaml:"relativeurls,omitempty"`

		// Amount of time to wait for connection to drain before shutting down when registry
		// receives a stop signal
		DrainTimeout time.Duration `yaml:"draintimeout,omitempty"`

		// TLS instructs the http server to listen with a TLS configuration.
		// This only support simple tls configuration with a cert and key.
		// Mostly, this is useful for testing situations or simple deployments
		// that require tls. If more complex configurations are required, use
		// a proxy or make a proposal to add support here.
		TLS struct {
			// Certificate specifies the path to an x509 certificate file to
			// be used for TLS.
			Certificate string `yaml:"certificate,omitempty"`

			// Key specifies the path to the x509 key file, which should
			// contain the private portion for the file specified in
			// Certificate.
			Key string `yaml:"key,omitempty"`

			// Specifies the CA certs for client authentication
			// A file may contain multiple CA certificates encoded as PEM
			ClientCAs []string `yaml:"clientcas,omitempty"`

			// Specifies the lowest TLS version allowed
			MinimumTLS string `yaml:"minimumtls,omitempty"`

			// Specifies a list of cipher suites allowed
			CipherSuites []string `yaml:"ciphersuites,omitempty"`

			// LetsEncrypt is used to configuration setting up TLS through
			// Let's Encrypt instead of manually specifying certificate and
			// key. If a TLS certificate is specified, the Let's Encrypt
			// section will not be used.
			LetsEncrypt struct {
				// CacheFile specifies cache file to use for lets encrypt
				// certificates and keys.
				CacheFile string `yaml:"cachefile,omitempty"`

				// Email is the email to use during Let's Encrypt registration
				Email string `yaml:"email,omitempty"`

				// Hosts specifies the hosts which are allowed to obtain Let's
				// Encrypt certificates.
				Hosts []string `yaml:"hosts,omitempty"`

				// DirectoryURL points to the CA directory endpoint.
				// If empty, LetsEncrypt is used.
				DirectoryURL string `yaml:"directoryurl,omitempty"`
			} `yaml:"letsencrypt,omitempty"`
		} `yaml:"tls,omitempty"`

		// Headers is a set of headers to include in HTTP responses. A common
		// use case for this would be security headers such as
		// Strict-Transport-Security. The map keys are the header names, and
		// the values are the associated header payloads.
		Headers http.Header `yaml:"headers,omitempty"`

		// Debug configures the http debug interface, if specified. This can
		// include services such as pprof, expvar and other data that should
		// not be exposed externally. Left disabled by default.
		Debug struct {
			// Addr specifies the bind address for the debug server.
			Addr string `yaml:"addr,omitempty"`
			// Prometheus configures the Prometheus telemetry endpoint.
			Prometheus struct {
				Enabled bool   `yaml:"enabled,omitempty"`
				Path    string `yaml:"path,omitempty"`
			} `yaml:"prometheus,omitempty"`
		} `yaml:"debug,omitempty"`

		// HTTP2 configuration options
		HTTP2 struct {
			// Specifies whether the registry should disallow clients attempting
			// to connect via HTTP/2. If set to true, only HTTP/1.1 is supported.
			Disabled bool `yaml:"disabled,omitempty"`
		} `yaml:"http2,omitempty"`

		H2C struct {
			// Enables H2C (HTTP/2 Cleartext). Enable to support HTTP/2 without needing to configure TLS
			// Useful when deploying the registry behind a load balancer (e.g. Cloud Run)
			Enabled bool `yaml:"enabled,omitempty"`
		} `yaml:"h2c,omitempty"`
	} `yaml:"http,omitempty"`

	// Notifications specifies configuration about various endpoint to which
	// registry events are dispatched.
	Notifications Notifications `yaml:"notifications,omitempty"`

	// Redis configures the redis pool available to the registry webapp.
	Redis Redis `yaml:"redis,omitempty"`

	Health  Health  `yaml:"health,omitempty"`
	Catalog Catalog `yaml:"catalog,omitempty"`

	Proxy Proxy `yaml:"proxy,omitempty"`

	// Validation configures validation options for the registry.
	Validation struct {
		// Enabled enables the other options in this section. This field is
		// deprecated in favor of Disabled.
		Enabled bool `yaml:"enabled,omitempty"`
		// Disabled disables the other options in this section.
		Disabled bool `yaml:"disabled,omitempty"`
		// Manifests configures manifest validation.
		Manifests struct {
			// URLs configures validation for URLs in pushed manifests.
			URLs struct {
				// Allow specifies regular expressions (https://godoc.org/regexp/syntax)
				// that URLs in pushed manifests must match.
				Allow []string `yaml:"allow,omitempty"`
				// Deny specifies regular expressions (https://godoc.org/regexp/syntax)
				// that URLs in pushed manifests must not match.
				Deny []string `yaml:"deny,omitempty"`
			} `yaml:"urls,omitempty"`
		} `yaml:"manifests,omitempty"`
	} `yaml:"validation,omitempty"`

	// Policy configures registry policy options.
	Policy struct {
		// Repository configures policies for repositories
		Repository struct {
			// Classes is a list of repository classes which the
			// registry allows content for. This class is matched
			// against the configuration media type inside uploaded
			// manifests. When non-empty, the registry will enforce
			// the class in authorized resources.
			Classes []string `yaml:"classes"`
		} `yaml:"repository,omitempty"`
	} `yaml:"policy,omitempty"`
}

Configuration is a versioned registry configuration, intended to be provided by a yaml file, and optionally modified by environment variables.

Note that yaml field names should never include _ characters, since this is the separator used in environment variable names.

func Parse 

func Parse(rd io.Reader) (*Configuration, error)

Parse parses an input configuration yaml document into a Configuration struct This should generally be capable of handling old configuration format versions

Environment variables may be used to override configuration parameters other than version, following the scheme below: Configuration.Abc may be replaced by the value of REGISTRY_ABC, Configuration.Abc.Xyz may be replaced by the value of REGISTRY_ABC_XYZ, and so forth

type Endpoint 

type Endpoint struct {
	Name              string        `yaml:"name"`              // identifies the endpoint in the registry instance.
	Disabled          bool          `yaml:"disabled"`          // disables the endpoint
	URL               string        `yaml:"url"`               // post url for the endpoint.
	Headers           http.Header   `yaml:"headers"`           // static headers that should be added to all requests
	Timeout           time.Duration `yaml:"timeout"`           // HTTP timeout
	Threshold         int           `yaml:"threshold"`         // circuit breaker threshold before backing off on failure
	Backoff           time.Duration `yaml:"backoff"`           // backoff duration
	IgnoredMediaTypes []string      `yaml:"ignoredmediatypes"` // target media types to ignore
	Ignore            Ignore        `yaml:"ignore"`            // ignore event types
}

Endpoint describes the configuration of an http webhook notification endpoint.

type Events 

type Events struct {
	IncludeReferences bool `yaml:"includereferences"` // include reference data in manifest events
}

Events configures notification events.

type FileChecker 

type FileChecker struct {
	// Interval is the duration in between checks
	Interval time.Duration `yaml:"interval,omitempty"`
	// File is the path to check
	File string `yaml:"file,omitempty"`
	// Threshold is the number of times a check must fail to trigger an
	// unhealthy state
	Threshold int `yaml:"threshold,omitempty"`
}

FileChecker is a type of entry in the health section for checking files.

type HTTPChecker 

type HTTPChecker struct {
	// Timeout is the duration to wait before timing out the HTTP request
	Timeout time.Duration `yaml:"timeout,omitempty"`
	// StatusCode is the expected status code
	StatusCode int
	// Interval is the duration in between checks
	Interval time.Duration `yaml:"interval,omitempty"`
	// URI is the HTTP URI to check
	URI string `yaml:"uri,omitempty"`
	// Headers lists static headers that should be added to all requests
	Headers http.Header `yaml:"headers"`
	// Threshold is the number of times a check must fail to trigger an
	// unhealthy state
	Threshold int `yaml:"threshold,omitempty"`
}

HTTPChecker is a type of entry in the health section for checking HTTP URIs.

type Health 

type Health struct {
	// FileCheckers is a list of paths to check
	FileCheckers []FileChecker `yaml:"file,omitempty"`
	// HTTPCheckers is a list of URIs to check
	HTTPCheckers []HTTPChecker `yaml:"http,omitempty"`
	// TCPCheckers is a list of URIs to check
	TCPCheckers []TCPChecker `yaml:"tcp,omitempty"`
	// StorageDriver configures a health check on the configured storage
	// driver
	StorageDriver struct {
		// Enabled turns on the health check for the storage driver
		Enabled bool `yaml:"enabled,omitempty"`
		// Interval is the duration in between checks
		Interval time.Duration `yaml:"interval,omitempty"`
		// Threshold is the number of times a check must fail to trigger an
		// unhealthy state
		Threshold int `yaml:"threshold,omitempty"`
	} `yaml:"storagedriver,omitempty"`
}

Health provides the configuration section for health checks.

type Ignore 

type Ignore struct {
	MediaTypes []string `yaml:"mediatypes"` // target media types to ignore
	Actions    []string `yaml:"actions"`    // ignore action types
}

Ignore configures mediaTypes and actions of the event, that it won't be propagated

type LogHook 

type LogHook struct {
	// Disable lets user select to enable hook or not.
	Disabled bool `yaml:"disabled,omitempty"`

	// Type allows user to select which type of hook handler they want.
	Type string `yaml:"type,omitempty"`

	// Levels set which levels of log message will let hook executed.
	Levels []string `yaml:"levels,omitempty"`

	// MailOptions allows user to configure email parameters.
	MailOptions MailOptions `yaml:"options,omitempty"`
}

LogHook is composed of hook Level and Type. After hooks configuration, it can execute the next handling automatically, when defined levels of log message emitted. Example: hook can sending an email notification when error log happens in app.

type Loglevel 

type Loglevel string

Loglevel is the level at which operations are logged This can be error, warn, info, or debug

func (*Loglevel) UnmarshalYAML 

func (loglevel *Loglevel) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML implements the yaml.Umarshaler interface Unmarshals a string into a Loglevel, lowercasing the string and validating that it represents a valid loglevel

type MailOptions 

type MailOptions struct {
	SMTP struct {
		// Addr defines smtp host address
		Addr string `yaml:"addr,omitempty"`

		// Username defines user name to smtp host
		Username string `yaml:"username,omitempty"`

		// Password defines password of login user
		Password string `yaml:"password,omitempty"`

		// Insecure defines if smtp login skips the secure certification.
		Insecure bool `yaml:"insecure,omitempty"`
	} `yaml:"smtp,omitempty"`

	// From defines mail sending address
	From string `yaml:"from,omitempty"`

	// To defines mail receiving address
	To []string `yaml:"to,omitempty"`
}

MailOptions provides the configuration sections to user, for specific handler.

type Middleware 

type Middleware struct {
	// Name the middleware registers itself as
	Name string `yaml:"name"`
	// Flag to disable middleware easily
	Disabled bool `yaml:"disabled,omitempty"`
	// Map of parameters that will be passed to the middleware's initialization function
	Options Parameters `yaml:"options"`
}

Middleware configures named middlewares to be applied at injection points.

type Notifications 

type Notifications struct {
	// EventConfig is the configuration for the event format that is sent to each Endpoint.
	EventConfig Events `yaml:"events,omitempty"`
	// Endpoints is a list of http configurations for endpoints that
	// respond to webhook notifications. In the future, we may allow other
	// kinds of endpoints, such as external queues.
	Endpoints []Endpoint `yaml:"endpoints,omitempty"`
}

Notifications configures multiple http endpoints.

type Parameters 

type Parameters map[string]interface{}

Parameters defines a key-value parameters mapping

type Parser 

type Parser struct {
	// contains filtered or unexported fields
}

Parser can be used to parse a configuration file and environment of a defined version into a unified output structure

func NewParser 

func NewParser(prefix string, parseInfos []VersionedParseInfo) *Parser

NewParser returns a *Parser with the given environment prefix which handles versioned configurations which match the given parseInfos

func (*Parser) Parse 

func (p *Parser) Parse(in []byte, v interface{}) error

Parse reads in the given []byte and environment and writes the resulting configuration into the input v

Environment variables may be used to override configuration parameters other than version, following the scheme below: v.Abc may be replaced by the value of PREFIX_ABC, v.Abc.Xyz may be replaced by the value of PREFIX_ABC_XYZ, and so forth

type Proxy 

type Proxy struct {
	// RemoteURL is the URL of the remote registry
	RemoteURL string `yaml:"remoteurl"`

	// Username of the hub user
	Username string `yaml:"username"`

	// Password of the hub user
	Password string `yaml:"password"`

	// TTL is the expiry time of the content and will be cleaned up when it expires
	// if not set, defaults to 7 * 24 hours
	// If set to zero, will never expire cache
	TTL *time.Duration `yaml:"ttl,omitempty"`
}

Proxy configures the registry as a pull through cache

type Redis 

type Redis struct {
	// Addr specifies the the redis instance available to the application.
	Addr string `yaml:"addr,omitempty"`

	// Usernames can be used as a finer-grained permission control since the introduction of the redis 6.0.
	Username string `yaml:"username,omitempty"`

	// Password string to use when making a connection.
	Password string `yaml:"password,omitempty"`

	// DB specifies the database to connect to on the redis instance.
	DB int `yaml:"db,omitempty"`

	// TLS configures settings for redis in-transit encryption
	TLS struct {
		Enabled bool `yaml:"enabled,omitempty"`
	} `yaml:"tls,omitempty"`

	DialTimeout  time.Duration `yaml:"dialtimeout,omitempty"`  // timeout for connect
	ReadTimeout  time.Duration `yaml:"readtimeout,omitempty"`  // timeout for reads of data
	WriteTimeout time.Duration `yaml:"writetimeout,omitempty"` // timeout for writes of data

	// Pool configures the behavior of the redis connection pool.
	Pool struct {
		// MaxIdle sets the maximum number of idle connections.
		MaxIdle int `yaml:"maxidle,omitempty"`

		// MaxActive sets the maximum number of connections that should be
		// opened before blocking a connection request.
		MaxActive int `yaml:"maxactive,omitempty"`

		// IdleTimeout sets the amount time to wait before closing
		// inactive connections.
		IdleTimeout time.Duration `yaml:"idletimeout,omitempty"`
	} `yaml:"pool,omitempty"`
}

Redis configures the redis pool available to the registry webapp.

type Storage 

type Storage map[string]Parameters

Storage defines the configuration for registry object storage

func (Storage) MarshalYAML 

func (storage Storage) MarshalYAML() (interface{}, error)

MarshalYAML implements the yaml.Marshaler interface

func (Storage) Parameters 

func (storage Storage) Parameters() Parameters

Parameters returns the Parameters map for a Storage configuration

func (Storage) Type 

func (storage Storage) Type() string

Type returns the storage driver type, such as filesystem or s3

func (*Storage) UnmarshalYAML 

func (storage *Storage) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML implements the yaml.Unmarshaler interface Unmarshals a single item map into a Storage or a string into a Storage type with no parameters

type TCPChecker 

type TCPChecker struct {
	// Timeout is the duration to wait before timing out the TCP connection
	Timeout time.Duration `yaml:"timeout,omitempty"`
	// Interval is the duration in between checks
	Interval time.Duration `yaml:"interval,omitempty"`
	// Addr is the TCP address to check
	Addr string `yaml:"addr,omitempty"`
	// Threshold is the number of times a check must fail to trigger an
	// unhealthy state
	Threshold int `yaml:"threshold,omitempty"`
}

TCPChecker is a type of entry in the health section for checking TCP servers.

type Version 

type Version string

Version is a major/minor version pair of the form Major.Minor Major version upgrades indicate structure or type changes Minor version upgrades should be strictly additive

func MajorMinorVersion 

func MajorMinorVersion(major, minor uint) Version

MajorMinorVersion constructs a Version from its Major and Minor components

func (Version) Major 

func (version Version) Major() uint

Major returns the major version portion of a Version

func (Version) Minor 

func (version Version) Minor() uint

Minor returns the minor version portion of a Version

func (*Version) UnmarshalYAML 

func (version *Version) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML implements the yaml.Unmarshaler interface Unmarshals a string of the form X.Y into a Version, validating that X and Y can represent unsigned integers

type VersionedParseInfo 

type VersionedParseInfo struct {
	// Version is the version which this parsing information relates to
	Version Version
	// ParseAs defines the type which a configuration file of this version
	// should be parsed into
	ParseAs reflect.Type
	// ConversionFunc defines a method for converting the parsed configuration
	// (of type ParseAs) into the current configuration version
	// Note: this method signature is very unclear with the absence of generics
	ConversionFunc func(interface{}) (interface{}, error)
}

VersionedParseInfo defines how a specific version of a configuration should be parsed into the current version

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