Page Comparison

...

pico_id = engine:getPicoIDByECI(eci)
/*
    "some_pico_id"
*/

...

Get the parent's pico_id for the current or given pico_id.

parent_id = engine:getParent(pico_id)
/*
	"the parent's pico_id"
*/

...

List the pico's children pico_ids.

children = engine:listChildren(pico_id)
/*
  [
    "child 0 pico_id",
    "child 1 pico_id",
    ...
  ]
*/

listPolicies

List all the engine policies.

policies = engine:listPolicies()
/*
  [
    {id: "1234", name: "policy 1", event: {allow: [...]} query: ...},
    {id: "4321", name: "policy 2", event: {allow: [...]} query: ...},
    {id: "5555", name: "policy 3", event: {allow: [...]} query: ...},
  ]
*/

listChannels

List the pico's channels.

channels = engine:listChannels(pico_id)
/*
	[
      {
        "id" : "eci-0...",
        "pico_id": <pico_id>,
        "name": "name 0",
        "type": "type 0"
      },
      {
        "id" : "eci-1...",
        "pico_id": <pico_id>,
        "name": "name 1",
        "type": "type 1"
      }
    ]
*/

...

List the rid's installed on the pico.

rids = engine:listInstalledRIDs(pico_id)
/*
  ["io.picolabs.pico", ...]

*/

...

List all enabled ruleset ids. No parameters are given.

rids = engine:listAllEnabledRIDs();
/*
	["io.picolabs.pico", "io.picolabs.logging"]
*/

...

desc = engine:describeRuleset("io.picolabs.hello_world");
/*
    {
        "rid": "io.picolabs.hello_world",
        "src": "ruleset io.picolabs.hello_world{ ...<cut for brevity> ... }",
        "hash": "a096f2f3bfbd63e54bf4f39081814dbc895f3f003ae9918dbe24aec8acc097b9",
        "url": "https://raw.githubusercontent.com/Picolab/node-pico-engine-core/master/test-rulesets/hello-world.krl",
        "timestamp_stored": "2017-05-17T21:31:21.663Z",
        "timestamp_enable": "2017-05-17T21:31:21.663Z",
        "meta": {
            "name": "Hello World",
            "description": "\nA first ruleset for the Quickstart\n    ",
            "author": "Phil Windley"
        }
    }
*/

encryptChannelMessage

Encrypt a message sent over a channel

 encrypted_message = engine:encryptChannelMessage(eci, message, subscription.other_encryption_public_key)
/*
	{
		"encryptedMessage" : <base 58 encrypted message>,
        "nonce" : <base 58 nonce used to encrypt message>,
	}
*/

decryptChannelMessage

Encrypt a message sent over a channel

decrypted_message = engine:decryptChannelMessage(eci, encrypted_message, nonce, other_encryption_public_key)

/*
	// The decrypted message if successfully decrypted, false otherwise
*/

signChannelMessage

SIgn a message sent over a channel

signed_message = engine:signChannelMessage(eci, message)
/*
	// Base 58 encoded string that is the signed message
*/

verifySignedMessage

Verify a message sent over a channel

verifiedMessage = engine:verifySignedMessage(verify_key, signedMessage)
/*
	// The original message if verified, false otherwise
*/

Actions

newPico

Creates a new pico.

engine:newPico() setting(resp)
/*
	{
		"id" : <new_pico_id>,
        "parent_id" : <current pico_id>,
	}
*/

Note: newPico does not provide an eci. This action is used in conjunction with engine:createChannel to create a pico with both an id and eci. See wranglerNPE.krl for an example of how to fully create a pico according to a given prototype.

removePico

engine:removePico(idengine:removePico(id)

newPolicy

Creates a new policy.

engine:newPolicy({
    name: "only allow foo/bar events",
    event: {
        allow: [
            {domain: "foo", type: "bar"}
        ]
    }
}) setting(resp)
/*
	{
        id: "1234",
    	name: "only allow foo/bar events",
        event: {
            allow: [{domain: "foo", type: "bar"}],
            deny: [],
        },
        query: {allow: [], deny: []}
	}
*/

For more description on how these policies work see: https://github.com/Picolab/pico-engine/pull/350#issue-160657235

removePolicy

Removes a policy. It will error if any channels are still using it.

engine:removePolicy("1234")

newChannel

Creates a new channel for a pico.

...

...

engine:newChannel(name = "channel_name", type = "channel_type", policy_id = "1234") setting(resp)
/*
	{
		"id" : <new_eci>,
        "pico_id": <pico_id>,
		"name": "channel_name",
		"type": "channel_type",
		"policy_id": "1234"
 	}
*/

Note: "id" in the resp body is the given pico's new channel eci, not the original id passed into the function.

...

engine:removeChannel("eci123...")

...

If you provide `base` then it will be resolved with the url. For example, `base` is  "http://raw.githubusercontent.com/" and `url` is "/username/repository1/file.txt" then the engine will register `http`http://raw.githubusercontent.com/username/repository1/file.txt`txt`

Attempting to register a ruleset with the same rid as a rule that is already registered will pull the ruleset from the given base/url and act as an update action, overwriting the current file with the one from the remote repository.

If you register a ruleset sharing a rid with a system ruleset, the system ruleset will be restored when the engine is restarted.

engine:registerRuleset("some.cool.ruleset.krl", base = "http://example.com/krl-files/") setting(resp)
/*
    "some.cool.ruleset.id"
*/

...

engine:unregisterRuleset("myRuleset")


engine:unregisterRuleset(["rid.1", "rid.2"])

...

Do not provide the "rid" key if you want to retrieve the krl file from a remote repository (just provide the "base" and "url" keys). If you provide the "rid" key at all, this function will assume the ruleset is already registered with the engine and will simply throw an error if it is not found, ignoring the "base" and "url" as if they were not submitted. If the "base" and "url" are provided, then the krl file will be registered to the engine (if not already) and then installed on the pico with the given "pico_id".

engine:installRuleset( ent:id, "wrangler" ) setting(resp)
/*
    "wrangler"
*/

engine:installRuleset( ent:id, ["wrangler","Pds"] ) setting(resp)
/*
    ["wrangler","Pds"]
*/

engine:installRuleset( ent:id, base = <base>, url = <url> ) setting(resp)
/*
    "the.rid.at.that.url"
*/

...

This does not return anything

engine:uninstallRuleset( rid = "myRuleset")


engine:uninstallRuleset( meta:picoId, ["rid.1", "rid.2"])

...