The cl-myriam Reference Manual

Table of Contents

The cl-myriam Reference Manual

This is the cl-myriam Reference Manual, version 0.1.3, generated automatically by Declt version 3.0 "Montgomery Scott" on Sun May 15 03:59:56 2022 GMT+0.

1 Introduction

cl-myriam

myriam is a simple attempt at implementing the actor model for secure, distributed programming. Feedback is very welcome!

This is a Common Lisp port of my myriam Chicken Scheme egg. It's already at feature parity with its Scheme sister, aside from the ability to send functions/closures (and obviously, no continuations either), and uses ZMQ instead of NNG for messaging, which means we can make use of CurveZMQ for easier encryption and (some) authentication.

The API is very much unstable at the moment.

Requirements

Myriam stands on the shoulders of giants.

• libzmq built with libsodium.
• Systems:
  • bordeaux-threads
  • cl-conspack
  • lparallel
  • pzmq
  • serapeum
  • str
  • usocket
  • sha3

Usage

cl-myriam is on Quicklisp, so you can load it with (ql:quickload :cl-myriam).

Otherwise, you can load the :cl-myriam system directly and require the :myriam package. Everything you need is in there.

Make sure to check the tests folder for examples.

spawn

(spawn &rest actions) -> (values string thread)

Spawn an actor and return its address and thread. If no actions are specified, the actor will only react to predefined actions.

action

(action name task &optional context) -> action

Create an action for an actor definition. name should be a keyword. task should be a function with any number of arguments (or no arguments). context should be either :sync, :async or :any and defaults to :async; it specifies the context in which a task can be executed, e.g. :sync tasks will be executed synchronously and it's what you'll want if you expect to get a value out of them.

msg

(msg head &rest body) -> message

Create a message to be sent to an actor. head should be a keyword corresponding to the name of a task defined in the target actor. Arguments in body, if any, will be passed to the task to be executed.

send and send*

(send address msg)

(send* address msg) -> (or * (values nil nil))

Send a message to an actor to be executed either in an asynchronous (send) or synchronous (send*) context. msg should correspond in context, task name and number of arguments with the target task.

About identities

Identities encapsulate encryption keys. A self-identity contains both a public and secret key, while a public-identity contains only a public key.

Actors are spawned with the self-identity inside *current-self-identity* (which means that many actors can share the same identity, if you want). Outgoing messages need *target-public-identity* to be set with a public-identity for encryption.

make-self-identity

(make-self-identity) -> self-identity

Make a self-identity with a keypair.

self->public-identity

(self->public-identity self-id) -> public-identity

Make a public-identity from the public key in self-id.

with-self-identity

(with-self-identity id &body body)

Execute body with *current-self-identity* set with self-identity id.

with-target-identity

(with-target-identity id &body body)

Execute body with *target-public-identity* set with public-identity id.

Messaging

ping

(send address (msg :ping))

Check if an actor is alive.

stop

(send address (msg :stop))

Stop an actor.

store

(send address (msg :store key datum))

Store datum into an actor's internal storage. key should be a keyword.

fetch

(send address (msg :fetch key))

Fetch a value from an actor's internal storage, or nil of there is no such value. key should be a keyword.

*self*

Dynamic variable useful for referring to an actor's self address.

*send-timeout*

Time to wait for a reply before killing the connection.

Authentication

By default, actors accept all incoming messages. You need to spawn an authenticator to filter out connections based on host and identities.

spawn-authenticator

(spawn-authenticator accept-p &optional name) -> (values bt:thread name)

Spawn an authenticator (a ZAP server). accept-p should be a predicate which takes an IP address and the public key of the authenticating client (as a byte vector); an incoming connection will be either accepted or rejected based on the result of accept-p. Name shoule be a unique string and it can be used for terminating the authenticator. You can only spawn a single authenticator per context, see below.

kill authenticator

(kill-authenticator name)

Kill the given authenticator.

authenticator-alive-p

(authenticator-alive-p name) -> boolean

Test if the authenticator with the given name is alive.

Contexts

Contexts allow you to separate actor groups with different authentication parameters. Without contexts, you're limited to one authenticator per application.

(defparameter a
  (myr:with-new-context
    (let ((authenticator (myr:spawn-authenticator
                          (lambda (ip key)
                            (declare (ignore key))
                            (string= ip "127.0.0.1")))))
      (declare (ignore authenticator))
      (myr:spawn))))

In this example, a will only accept connections from localhost.

with-new-context

(with-new-context &body forms)

Execute forms in a fresh context. Mostly used to spawn actors under an authenticator with specific parameters.

Utilities

change-host

(change-host address new-host) -> valid-address

Replace the host in address for new-host.

all-actors

(all-actors) -> list

Get a list of all local actors.

stop-all-actors

(stop-all-actors)

Stop all local actors.

Notes

Current limitations/caveats

• Sending your own classes inside a message requires you to define the methods encode-object and decode-object. See https://github.com/conspack/cl-conspack#clos-and-general-objects for more details, it's easier than it sounds.
• Synchronous messages block execution of an actor for the duration of the task.
• No assumptions are made about identity distribution and service (actor) discovery mechanisms.

2 Systems

The main system appears first, followed by any subsystem dependency.

2.1 cl-myriam

Author

Ariela Wenner

License

3-clause BSD

Description

Simple actor model implementation for local and remote actors

Version

0.1.3

Dependencies

• babel
• bordeaux-threads
• cl-conspack
• cl-ppcre
• lparallel
• pzmq
• serapeum
• str
• uuid
• usocket
• sha3

Source

cl-myriam.asd (file)

Components

• package.lisp (file)
• src (module)

3 Modules

Modules are listed depth-first from the system components tree.

3.1 cl-myriam/src

Dependency

package.lisp (file)

Parent

cl-myriam (system)

Location

src/

Components

• utils.lisp (file)
• conditions.lisp (file)
• address.lisp (file)
• identity.lisp (file)
• context.lisp (file)
• authentication.lisp (file)
• messaging.lisp (file)
• action.lisp (file)
• actors.lisp (file)

4 Files

Files are sorted by type and then listed depth-first from the systems components trees.

4.1 Lisp

4.1.1 cl-myriam.asd

Location

cl-myriam.asd

Systems

cl-myriam (system)

4.1.2 cl-myriam/package.lisp

Parent

cl-myriam (system)

Location

package.lisp

Packages

myriam

4.1.3 cl-myriam/src/utils.lisp

Parent

src (module)

Location

src/utils.lisp

Exported Definitions

• all-actors (function)
• stop-all-actors (function)

Internal Definitions

• kernel-setup (function)
• string-uuid (function)
• with-timeout (macro)

4.1.4 cl-myriam/src/conditions.lisp

Parent

src (module)

Location

src/conditions.lisp

Internal Definitions

• encryption-failed (condition)
• invalid-message (condition)
• self-identity-not-set (condition)
• target-identity-not-set (condition)

4.1.5 cl-myriam/src/address.lisp

Parent

src (module)

Location

src/address.lisp

Exported Definitions

change-host (function)

Internal Definitions

• *address-scanner* (special variable)
• address->binding (function)
• address-p (function)
• address-tokens (function)
• make-address (function)
• make-random-port (function)
• valid-address (type)

4.1.6 cl-myriam/src/identity.lisp

Parent

src (module)

Location

src/identity.lisp

Exported Definitions

• *current-self-identity* (special variable)
• *target-public-identity* (special variable)
• make-self-identity (function)
• public-identity (class)
• public-identity-hash (method)
• (setf public-identity-hash) (method)
• public-identity-key (method)
• (setf public-identity-key) (method)
• self->public-identity (function)
• self-identity (class)
• self-identity-hash (method)
• (setf self-identity-hash) (method)
• self-identity-public-key (method)
• (setf self-identity-public-key) (method)
• self-identity-secret-key (method)
• (setf self-identity-secret-key) (method)
• with-self-identity (macro)
• with-target-identity (macro)

Internal Definitions

• *trust-store* (special variable)
• *trust-store-lock* (special variable)
• hash-blob (function)
• make-public-identity (function)
• store-public-identity (function)

4.1.7 cl-myriam/src/context.lisp

Parent

src (module)

Location

src/context.lisp

Exported Definitions

with-new-context (macro)

Internal Definitions

*context* (special variable)

4.1.8 cl-myriam/src/authentication.lisp

Parent

src (module)

Location

src/authentication.lisp

Exported Definitions

• authenticator-alive-p (function)
• kill-authenticator (function)
• spawn-authenticator (function)

Internal Definitions

• authenticator-thread (function)
• receive-and-process-auth-request (function)

4.1.9 cl-myriam/src/messaging.lisp

Parent

src (module)

Location

src/messaging.lisp

Exported Definitions

• *send-timeout* (special variable)
• msg (function)
• send (function)
• send* (function)

Internal Definitions

• message (class)
• message-body (method)
• (setf message-body) (method)
• message-context (method)
• (setf message-context) (method)
• message-context-p (function)
• message-context-t (type)
• message-head (method)
• (setf message-head) (method)
• post (function)

4.1.10 cl-myriam/src/action.lisp

Parent

src (module)

Location

src/action.lisp

Exported Definitions

• action (function)
• action (class)

Internal Definitions

• action-context (method)
• (setf action-context) (method)
• action-context-p (function)
• action-context-t (type)
• action-name (method)
• (setf action-name) (method)
• action-task (method)
• (setf action-task) (method)

4.1.11 cl-myriam/src/actors.lisp

Parent

src (module)

Location

src/actors.lisp

Exported Definitions

• *print-internal-actor-error-messages* (special variable)
• *self* (special variable)
• spawn (function)

Internal Definitions

• *actions* (special variable)
• *storage* (special variable)
• *storage-lock* (special variable)
• actor-loop (function)
• fetch-value* (function)
• message-handle (function)
• store-value* (function)
• valid-message-p (function)
• valid-predefined-message-p (function)
• with-actor-parameters (macro)
• wrap-task (function)

5 Packages

Packages are listed by definition order.

5.1 myriam

Source

package.lisp (file)

Nickname

myr

Use List

common-lisp

Exported Definitions

• *current-self-identity* (special variable)
• *print-internal-actor-error-messages* (special variable)
• *self* (special variable)
• *send-timeout* (special variable)
• *target-public-identity* (special variable)
• action (function)
• action (class)
• all-actors (function)
• authenticator-alive-p (function)
• change-host (function)
• kill-authenticator (function)
• make-self-identity (function)
• msg (function)
• public-identity (class)
• public-identity-hash (generic function)
• public-identity-hash (method)
• (setf public-identity-hash) (method)
• (setf public-identity-hash) (generic function)
• public-identity-key (generic function)
• public-identity-key (method)
• (setf public-identity-key) (method)
• (setf public-identity-key) (generic function)
• self->public-identity (function)
• self-identity (class)
• self-identity-hash (generic function)
• self-identity-hash (method)
• (setf self-identity-hash) (method)
• (setf self-identity-hash) (generic function)
• self-identity-public-key (generic function)
• self-identity-public-key (method)
• (setf self-identity-public-key) (method)
• (setf self-identity-public-key) (generic function)
• self-identity-secret-key (generic function)
• self-identity-secret-key (method)
• (setf self-identity-secret-key) (method)
• (setf self-identity-secret-key) (generic function)
• send (function)
• send* (function)
• spawn (function)
• spawn-authenticator (function)
• stop-all-actors (function)
• with-new-context (macro)
• with-self-identity (macro)
• with-target-identity (macro)

Internal Definitions

• *actions* (special variable)
• *address-scanner* (special variable)
• *context* (special variable)
• *storage* (special variable)
• *storage-lock* (special variable)
• *trust-store* (special variable)
• *trust-store-lock* (special variable)
• action-context (generic function)
• action-context (method)
• (setf action-context) (method)
• (setf action-context) (generic function)
• action-context-p (function)
• action-context-t (type)
• action-name (generic function)
• action-name (method)
• (setf action-name) (method)
• (setf action-name) (generic function)
• action-task (generic function)
• action-task (method)
• (setf action-task) (method)
• (setf action-task) (generic function)
• actor-loop (function)
• address->binding (function)
• address-p (function)
• address-tokens (function)
• authenticator-thread (function)
• encryption-failed (condition)
• fetch-value* (function)
• hash-blob (function)
• invalid-message (condition)
• kernel-setup (function)
• make-address (function)
• make-public-identity (function)
• make-random-port (function)
• message (class)
• message-body (generic function)
• message-body (method)
• (setf message-body) (method)
• (setf message-body) (generic function)
• message-context (generic function)
• message-context (method)
• (setf message-context) (method)
• (setf message-context) (generic function)
• message-context-p (function)
• message-context-t (type)
• message-handle (function)
• message-head (generic function)
• message-head (method)
• (setf message-head) (method)
• (setf message-head) (generic function)
• post (function)
• receive-and-process-auth-request (function)
• self-identity-not-set (condition)
• store-public-identity (function)
• store-value* (function)
• string-uuid (function)
• target-identity-not-set (condition)
• valid-address (type)
• valid-message-p (function)
• valid-predefined-message-p (function)
• with-actor-parameters (macro)
• with-timeout (macro)
• wrap-task (function)

6 Definitions

Definitions are sorted by export status, category, package, and then by lexicographic order.

6.1 Exported definitions

6.1.1 Special variables

Special Variable: *current-self-identity*

Package

myriam

Source

identity.lisp (file)

Special Variable: *print-internal-actor-error-messages*

if not nil, print error messages when they occur inside an actor

Package

myriam

Source

actors.lisp (file)

Special Variable: *self*

Package

myriam

Source

actors.lisp (file)

Special Variable: *send-timeout*

Package

myriam

Source

messaging.lisp (file)

Special Variable: *target-public-identity*

Package

myriam

Source

identity.lisp (file)

6.1.2 Macros

Macro: with-new-context &body BODY

Package

myriam

Source

context.lisp (file)

Macro: with-self-identity SELF-ID &rest BODY

Package

myriam

Source

identity.lisp (file)

Macro: with-target-identity ID &rest BODY

Package

myriam

Source

identity.lisp (file)

6.1.3 Functions

Function: action NAME TASK &optional CONTEXT

helper to make an instance of an action

Package

myriam

Source

action.lisp (file)

Function: all-actors ()

Package

myriam

Source

utils.lisp (file)

Function: authenticator-alive-p NAME

Package

myriam

Source

authentication.lisp (file)

Function: change-host ADDRESS NEW-HOST

Package

myriam

Source

address.lisp (file)

Function: kill-authenticator NAME

Package

myriam

Source

authentication.lisp (file)

Function: make-self-identity ()

Package

myriam

Source

identity.lisp (file)

Function: msg HEAD &rest BODY

Build a message. head should be a keyword symbol

Package

myriam

Source

messaging.lisp (file)

Function: self->public-identity SELF-ID

Package

myriam

Source

identity.lisp (file)

Function: send ACTOR MSG

send a message to an actor to perform an asychronous task

Package

myriam

Source

messaging.lisp (file)

Function: send* ACTOR MSG

send a message to an actor to perform a synchronous task and get a result

Package

myriam

Source

messaging.lisp (file)

Function: spawn &rest ACTIONS

spawn an actor, return its address and running thread

Package

myriam

Source

actors.lisp (file)

Function: spawn-authenticator ACCEPT-P &optional NAME

Spawn an authenticator that will use accept-p (which should be a predicate that takes an IP address and a public key as a byte vector) to either accept or reject incoming connections. Name, if given, should be a unique string.

Package

myriam

Source

authentication.lisp (file)

Function: stop-all-actors ()

Package

myriam

Source

utils.lisp (file)

6.1.4 Generic functions

Generic Function: public-identity-hash OBJECT

Generic Function: (setf public-identity-hash) NEW-VALUE OBJECT

Package

myriam

Methods

Method: public-identity-hash (PUBLIC-IDENTITY public-identity)

automatically generated reader method

Source

identity.lisp (file)

Method: (setf public-identity-hash) NEW-VALUE (PUBLIC-IDENTITY public-identity)

automatically generated writer method

Source

identity.lisp (file)

Generic Function: public-identity-key OBJECT

Generic Function: (setf public-identity-key) NEW-VALUE OBJECT

Package

myriam

Methods

Method: public-identity-key (PUBLIC-IDENTITY public-identity)

automatically generated reader method

Source

identity.lisp (file)

Method: (setf public-identity-key) NEW-VALUE (PUBLIC-IDENTITY public-identity)

automatically generated writer method

Source

identity.lisp (file)

Generic Function: self-identity-hash OBJECT

Generic Function: (setf self-identity-hash) NEW-VALUE OBJECT

Package

myriam

Methods

Method: self-identity-hash (SELF-IDENTITY self-identity)

automatically generated reader method

Source

identity.lisp (file)

Method: (setf self-identity-hash) NEW-VALUE (SELF-IDENTITY self-identity)

automatically generated writer method

Source

identity.lisp (file)

Generic Function: self-identity-public-key OBJECT

Generic Function: (setf self-identity-public-key) NEW-VALUE OBJECT

Package

myriam

Methods

Method: self-identity-public-key (SELF-IDENTITY self-identity)

automatically generated reader method

Source

identity.lisp (file)

Method: (setf self-identity-public-key) NEW-VALUE (SELF-IDENTITY self-identity)

automatically generated writer method

Source

identity.lisp (file)

Generic Function: self-identity-secret-key OBJECT

Generic Function: (setf self-identity-secret-key) NEW-VALUE OBJECT

Package

myriam

Methods

Method: self-identity-secret-key (SELF-IDENTITY self-identity)

automatically generated reader method

Source

identity.lisp (file)

Method: (setf self-identity-secret-key) NEW-VALUE (SELF-IDENTITY self-identity)

automatically generated writer method

Source

identity.lisp (file)

6.1.5 Classes

Class: action ()

Package

myriam

Source

action.lisp (file)

Direct superclasses

standard-object (class)

Direct methods

• action-context (method)
• action-context (method)
• action-task (method)
• action-task (method)
• action-name (method)
• action-name (method)

Direct slots

Slot: name

Type

keyword

Initargs

:name

Readers

action-name (generic function)

Writers

(setf action-name) (generic function)

Slot: task

Type

function

Initargs

:task

Readers

action-task (generic function)

Writers

(setf action-task) (generic function)

Slot: context

Type

myriam::action-context-t

Initargs

:context

Initform

:async

Readers

action-context (generic function)

Writers

(setf action-context) (generic function)

Class: public-identity ()

Package

myriam

Source

identity.lisp (file)

Direct superclasses

standard-object (class)

Direct methods

• public-identity-hash (method)
• public-identity-hash (method)
• public-identity-key (method)
• public-identity-key (method)

Direct slots

Slot: public-key

Type

(simple-array (unsigned-byte 8) (32))

Initargs

:public-key

Readers

public-identity-key (generic function)

Writers

(setf public-identity-key) (generic function)

Slot: hash

Type

string

Initargs

:hash

Readers

public-identity-hash (generic function)

Writers

(setf public-identity-hash) (generic function)

Class: self-identity ()

Package

myriam

Source

identity.lisp (file)

Direct superclasses

standard-object (class)

Direct methods

• self-identity-hash (method)
• self-identity-hash (method)
• self-identity-secret-key (method)
• self-identity-secret-key (method)
• self-identity-public-key (method)
• self-identity-public-key (method)

Direct slots

Slot: public-key

Type

(simple-array (unsigned-byte 8) (32))

Initargs

:public-key

Readers

self-identity-public-key (generic function)

Writers

(setf self-identity-public-key) (generic function)

Slot: secret-key

Type

(simple-array (unsigned-byte 8) (32))

Initargs

:secret-key

Readers

self-identity-secret-key (generic function)

Writers

(setf self-identity-secret-key) (generic function)

Slot: hash

Type

string

Initargs

:hash

Readers

self-identity-hash (generic function)

Writers

(setf self-identity-hash) (generic function)

6.2 Internal definitions

6.2.1 Special variables

Special Variable: *actions*

Package

myriam

Source

actors.lisp (file)

Special Variable: *address-scanner*

Package

myriam

Source

address.lisp (file)

Special Variable: *context*

Package

myriam

Source

context.lisp (file)

Special Variable: *storage*

Package

myriam

Source

actors.lisp (file)

Special Variable: *storage-lock*

Package

myriam

Source

actors.lisp (file)

Special Variable: *trust-store*

Package

myriam

Source

identity.lisp (file)

Special Variable: *trust-store-lock*

Package

myriam

Source

identity.lisp (file)

6.2.2 Macros

Macro: with-actor-parameters &rest BODY

Package

myriam

Source

actors.lisp (file)

Macro: with-timeout TIMEOUT &body BODY

Package

myriam

Source

utils.lisp (file)

6.2.3 Functions

Function: action-context-p X

Package

myriam

Source

action.lisp (file)

Function: actor-loop ()

Package

myriam

Source

actors.lisp (file)

Function: address->binding ADDRESS

Package

myriam

Source

address.lisp (file)

Function: address-p OBJ

Package

myriam

Source

address.lisp (file)

Function: address-tokens ADDRESS

Package

myriam

Source

address.lisp (file)

Function: authenticator-thread NAME

Package

myriam

Source

authentication.lisp (file)

Function: fetch-value* KEY

Package

myriam

Source

actors.lisp (file)

Function: hash-blob BLOB

Package

myriam

Source

identity.lisp (file)

Function: kernel-setup ()

Package

myriam

Source

utils.lisp (file)

Function: make-address &optional PORT

Package

myriam

Source

address.lisp (file)

Function: make-public-identity PKEY

Package

myriam

Source

identity.lisp (file)

Function: make-random-port ()

Package

myriam

Source

address.lisp (file)

Function: message-context-p X

Package

myriam

Source

messaging.lisp (file)

Function: message-handle OBJ

Package

myriam

Source

actors.lisp (file)

Function: post ACTOR MSG &key CONTEXT

send a message to an actor

Package

myriam

Source

messaging.lisp (file)

Function: receive-and-process-auth-request SOCKET ACCEPT-P

Package

myriam

Source

authentication.lisp (file)

Function: store-public-identity ID

Package

myriam

Source

identity.lisp (file)

Function: store-value* KEY VALUE

Package

myriam

Source

actors.lisp (file)

Function: string-uuid ()

Package

myriam

Source

utils.lisp (file)

Function: valid-message-p MSG

check if this is a valid message in the correct context

Package

myriam

Source

actors.lisp (file)

Function: valid-predefined-message-p MSG

check if this is a predefined message with the correct context - we conly care about :fetch for now

Package

myriam

Source

actors.lisp (file)

Function: wrap-task TASK MESSAGE

wrap task according to its context

Package

myriam

Source

actors.lisp (file)

6.2.4 Generic functions

Generic Function: action-context OBJECT

Generic Function: (setf action-context) NEW-VALUE OBJECT

Package

myriam

Methods

Method: action-context (ACTION action)

automatically generated reader method

Source

action.lisp (file)

Method: (setf action-context) NEW-VALUE (ACTION action)

automatically generated writer method

Source

action.lisp (file)

Generic Function: action-name OBJECT

Generic Function: (setf action-name) NEW-VALUE OBJECT

Package

myriam

Methods

Method: action-name (ACTION action)

automatically generated reader method

Source

action.lisp (file)

Method: (setf action-name) NEW-VALUE (ACTION action)

automatically generated writer method

Source

action.lisp (file)

Generic Function: action-task OBJECT

Generic Function: (setf action-task) NEW-VALUE OBJECT

Package

myriam

Methods

Method: action-task (ACTION action)

automatically generated reader method

Source

action.lisp (file)

Method: (setf action-task) NEW-VALUE (ACTION action)

automatically generated writer method

Source

action.lisp (file)

Generic Function: message-body OBJECT

Generic Function: (setf message-body) NEW-VALUE OBJECT

Package

myriam

Methods

Method: message-body (MESSAGE message)

automatically generated reader method

Source

messaging.lisp (file)

Method: (setf message-body) NEW-VALUE (MESSAGE message)

automatically generated writer method

Source

messaging.lisp (file)

Generic Function: message-context OBJECT

Generic Function: (setf message-context) NEW-VALUE OBJECT

Package

myriam

Methods

Method: message-context (MESSAGE message)

automatically generated reader method

Source

messaging.lisp (file)

Method: (setf message-context) NEW-VALUE (MESSAGE message)

automatically generated writer method

Source

messaging.lisp (file)

Generic Function: message-head OBJECT

Generic Function: (setf message-head) NEW-VALUE OBJECT

Package

myriam

Methods

Method: message-head (MESSAGE message)

automatically generated reader method

Source

messaging.lisp (file)

Method: (setf message-head) NEW-VALUE (MESSAGE message)

automatically generated writer method

Source

messaging.lisp (file)

6.2.5 Conditions

Condition: encryption-failed ()

Could not encrypt message with keys from our trust store.

Package

myriam

Source

conditions.lisp (file)

Direct superclasses

error (condition)

Condition: invalid-message ()

An invalid message received/attemped to be sent.

Package

myriam

Source

conditions.lisp (file)

Direct superclasses

error (condition)

Condition: self-identity-not-set ()

Self identity has not been set.

Package

myriam

Source

conditions.lisp (file)

Direct superclasses

error (condition)

Condition: target-identity-not-set ()

Target identity has not been set.

Package

myriam

Source

conditions.lisp (file)

Direct superclasses

error (condition)

6.2.6 Classes

Class: message ()

Package

myriam

Source

messaging.lisp (file)

Direct superclasses

standard-object (class)

Direct methods

• encode-object (method)
• message-context (method)
• message-context (method)
• message-body (method)
• message-body (method)
• message-head (method)
• message-head (method)

Direct slots

Slot: head

Type

keyword

Initargs

:head

Readers

message-head (generic function)

Writers

(setf message-head) (generic function)

Slot: body

Type

list

Initargs

:body

Readers

message-body (generic function)

Writers

(setf message-body) (generic function)

Slot: context

Type

myriam::message-context-t

Initargs

:context

Initform

:async

Readers

message-context (generic function)

Writers

(setf message-context) (generic function)

6.2.7 Types

Type: action-context-t ()

Package

myriam

Source

action.lisp (file)

Type: message-context-t ()

Package

myriam

Source

messaging.lisp (file)

Type: valid-address ()

Package

myriam

Source

address.lisp (file)

Appendix A Indexes

A.1 Concepts

A.2 Functions

A.3 Variables

A.4 Data types