Hyperledger Fabric SDK for Node.js Global

Members

<constant> CLIENT

CLIENT indicates that an identity is acting as a client

<constant> HFAFFILIATIONMGR

HFAFFILIATIONMGR is a boolean attribute that allows an identity to manage affiliations

<constant> HFGENCRL

HFGENCRL is an attribute that allows an identity to generate a CRL

<constant> HFINTERMEDIATECA

HFINTERMEDIATECA is a boolean attribute that allows an identity to enroll as an intermediate CA

<constant> HFREGISTRARATTRIBUTES

HFREGISTRARATTRIBUTES is an attribute that has a list of attributes that the registrar is allowed to register for an identity

<constant> HFREGISTRARDELEGATEROLES

HFREGISTRARDELEGATEROLES is an attribute that allows a registrar to give the roles specified to a registree for its 'hf.Registrar.Roles' attribute

<constant> HFREGISTRARROLES

HFREGISTRARROLES is an attribute that allows a registrar to manage identities of the specified roles

<constant> HFREVOKER

HFREVOKER is a boolean attribute that allows an identity to revoker a user and/or certificates

<constant> ORDERER

ORDERER indicates that an identity is acting as an orderer

<constant> PEER

PEER indicates that an identity is acting as a peer

<constant> USER

USER indicates that an identity is acting as a user

Methods

bitsToBytes(arr)

Convert from a bitArray to bytes (refer to SJCL's codec)

Parameters:

Name	Type	Description
`arr`	Array.<number>	a bitArray to convert from

Returns:

the bytes converted from the bitArray

bytesToBits(bytes)

Convert from bytes to a bitArray (refer to SJCL's codec)

Parameters:

Name	Type	Description
`bytes`	Array.<number>	a bytes to convert from

Returns:

the bitArray converted from bytes

newCryptoKeyStore( [keyValueStore])

Parameters:

Name	Type	Argument	Description
`keyValueStore`	KeyValueStore	<optional>	Optional. The built-in key store saves private keys. The key store must be instance of any KeyValueStore implementations.

Returns:

Type: CryptoKeyStore

newCryptoSuite( [setting])

Returns a new instance of the CryptoSuite API implementation. Supports the following: - newCryptoSuite({software: true, keysize: 256, algorithm: EC}) - newCryptoSuite({software: false, lib: '/usr/local/bin/pkcs11.so', slot: 0, pin: '1234'}) - newCryptoSuite({software: false, lib: '/usr/local/bin/pkcs11.so', label: 'ForFabric', pin: '1234'}) - newCryptoSuite({keysize: 384}) - newCryptoSuite()

Parameters:

Name	Type	Argument	Description
`setting`	CryptoSetting	<optional>	- property `software` default is true (for software based implementation), specific implementation module is specified in the setting 'crypto-suite-software' - property `algorithm` currently supporting ECDSA only with value "EC" - property `keysize` default is value of the setting 'crypto-keysize'

setLogger(logger)

Configures a logger for the entire SDK to use and override the default logger. Unless this method is called, the SDK uses a default logger based on winston. When using the built-in winston based logger, use the configuration setting hfc-logging to pass in configurations in the following format:

{
  'error': 'error.log',			// 'error' logs are printed to file 'error.log' relative of the current working dir for node.js
  'debug': '/tmp/myapp/debug.log',	// 'debug' and anything more critical ('info', 'warn', 'error') can also be an absolute path
  'info': 'console'			// 'console' is a keyword for logging to console
}

Parameters:

Name	Type	Description
`logger`	Object	a logger instance that defines the following methods: debug(), info(), warn(), error() with string interpolation methods like util.format.

Type Definitions

AffiliationRequest

Type:

Object

Properties:

Name	Type	Description
`name`	string	Required. The affiliation path to create
`caname`	string	Optional. Name of the CA to send the request to within the Fabric CA server
`force`	boolean	Optional. For create affiliation request, if any of the parent affiliations do not exist and 'force' is true, create all parent affiliations also. For delete affiliation request, if force is true and there are any child affiliations or any identities are associated with this affiliation or child affiliations, these identities and child affiliations will be deleted; otherwise, an error is returned. For update affiliation request, if any identities are associated with this affiliation, 'force' is true causes these identities' affiliations to be renamed; otherwise, an error is returned.

AttributeRequest

Type:

Object

Properties:

Name	Type	Description
`name`	string	The name of the attribute to include in the certificate
`optional`	boolean	throw an error if the identity does not have the attribute

Block

An object of a fully decoded protobuf message "Block".

A Block may contain the configuration of the channel or transactions on the channel.

A Block object will have the following object structure.

header
	number -- {int}
	previous_hash -- {byte[]}
	data_hash -- {byte[]}
data
	data -- {array}
		signature -- {byte[]}
		payload
			header -- {Header}
			data -- {ConfigEnvelope | Transaction}
metadata
	metadata -- {array} #each array item has it's own layout
		[0] #SIGNATURES
			signatures -- {MetadataSignature[]}
		[1] #LAST_CONFIG
			value
				index -- {number}
				signatures -- {MetadataSignature[]}
		[2] #TRANSACTIONS_FILTER
				{int[]} #see TxValidationCode in proto/peer/transaction.proto

Type:

Object

Examples

Get the block number:

var block_num = block.header.number;

Get the number of transactions, including the invalid transactions:

var block_num = block.data.data.length;

Get the Id of the first transaction in the block:

var tx_id = block.data.data[0].payload.header.channel_header.tx_id;

BroadcastResponse

Type:

Object

Properties:

Name	Type	Description
`status`	string	Value is 'SUCCESS' or a descriptive error string
`info`	string	Optional. Additional information about the status

BuildDiscoveryRequest

This Discovery request is a GRPC object to be signed and sent to the Discovery service of the Peer. The request will be based on either the proposal or the interests parameters. This request must be signed before sending to the peer.

Type:

Object

Properties:

Name	Type	Argument	Description
`endorsement`	Endorsement	<optional>	Optional. Include the endorsement instance to build the discovery request based on the proposal. This will get the discovery interest (chaincode names, collections and "no private reads") from the endorsement instance. Use the Proposal#addCollectionInterest to add collections to the endorsement's chaincode. Use the Proposal#setNoPrivateReads to set the proposals "no private reads" setting of the discovery interest. Use the Proposal#addCollectionInterest to add chaincodes, collections, and no private reads that will be used to get an endorsement plan from the peer's discovery service.
`interest`	DiscoveryChaincode	<optional>	Optional. An array of DiscoveryChaincodeInterest that have chaincodes, collections, and "no private reads" to help the peer's discovery service calculate the endorsement plan.

Examples

"single chaincode"

[
    { name: "mychaincode"}
 ]

"chaincode to chaincode"

[
     { name: "mychaincode"}, { name: "myotherchaincode"}
 ]

"single chaincode with a collection"

[
    { name: "mychaincode", collectionNames: ["mycollection"] }
 ]

"single chaincode with a collection allowing no private data reads"

[
    { name: "mychaincode", collectionNames: ["mycollection"], noPrivateReads: true }
 ]

"chaincode to chaincode with a collection"

[
    { name: "mychaincode", collectionNames: ["mycollection"] },
    { name: "myotherchaincode", collectionNames: ["mycollection"] }}
 ]

"chaincode to chaincode with collections"

[
    { name: "mychaincode", collectionNames: ["mycollection", "myothercollection"] },
    { name: "myotherchaincode", collectionNames: ["mycollection", "myothercollection"] }}
 ]

BuildProposalRequest

Type:

Object

Properties:

Name	Type	Argument	Description
`fcn`	string	<optional>	Optional. The function name. May be used by the chaincode to control the flow within the chaincode. Default 'invoke'
`args`	Array.<string>	<optional>	Optional. The arguments needed by the chaincode execution. These should be strings or byte buffers. These will be converted into byte buffers before building the protobuf object to be sent to the fabric peer for endorsement.
`transientMap`	Map	<optional>	Optional. A map with the key value pairs of the transient data.
`init`	boolean	<optional>	Optional. If this proposal should be an chaincode initialization request. This will set the init setting in the protobuf object sent to the peer.

CAInfoResponse

Type:

Object

Properties:

Name	Type	Description
`caName`	string	The name of the CA.
`caChain`	string	PEM-encoded certificate chain of the server's signing certificate
`issuerPublicKey`	string	Proto bytes of the CA's Idemix issuer public key
`issuerRevocationPublicKey`	string	PEM-encoded bytes of the CA's Idemix issuer revocation public key
`version`	string	Version of the server

ChaincodeEvent

Type:

Object

Properties:

Name	Type	Description
`chaincode_id`	string	The name of chaincode that sourced this event.
`transactionId`	string	The transaction ID of this event.
`status`	string	The transaction status of the transaction.
`eventName`	string	The string that is the eventName of this event as set by the chaincode during endorsement. `stub.SetEvent(eventName, payload)`
`payload`	Array.<byte>	Application-specific byte array that the chaincode set when it called `stub.SetEvent(eventName, payload)`

ChaincodeInvocationSpec

An endorsement proposal, which includes the name of the chaincode to be invoked and the arguments to be passed to the chaincode.

A "ChaincodeInvocationSpec" has the following object structure.

chaincode_spec
	type -- {int}
	chaincode_id
		path -- {string}
		name -- {string}
		version -- {string}
	input
		args -- {byte[][]}
		decorations -- {map of string to byte[]}
	timeout -- {int}

Type:

Object

ChannelConfigGroup

The configuration settings that govern how the fabric should maintain a channel are included in the blocks of the channel itself. When a block contains the channel configuration, the channel configuration record is the only item in the block's data array. Every block, including the configuration blocks themselves, has a pointer to the latest configuration block, making it easy to query for the latest channel configuration settings.

A channel configuration record will have the following object structure.

version -- {int}
mod_policy -- {string}
groups
	Orderer
		version -- {int}
		groups
			<orderer_org_name> -- {OrganizationConfigGroup}
		values
			ConsensusType
				version -- {int}
				mod_policy -- {string}
				value
					type -- {string}
			BatchSize
				version -- {int}
				mod_policy -- {string}
				value
					max_message_count -- {int}
					absolute_max_bytes -- {int}
					preferred_max_bytes -- {int}
			BatchTimeout
				version -- {int}
				mod_policy -- {string}
				value
					timeout -- {duration}
			ChannelRestrictions
				version -- {int}
				mod_policy -- {string}
				value
					max_count -- {int}
		policies
			Admins
				version -- {int}
				mod_policy -- {string}
				policy -- {ImplicitMetaPolicy}
			Writers
				version -- {int}
				mod_policy -- {string}
				policy -- {ImplicitMetaPolicy}
			Readers
				version -- {int}
				mod_policy -- {string}
				policy -- {ImplicitMetaPolicy}
			BlockValidation
				version -- {int}
				mod_policy -- {string}
				policy -- {SignaturePolicy}
	Application
		version -- {int}
		groups
			<peer_org_name> -- {OrganizationConfigGroup}
		values
		policies
			Admins
				version -- {int}
				mod_policy -- {string}
				policy -- {ImplicitMetaPolicy}
			Writers
				version -- {int}
				mod_policy -- {string}
				policy -- {ImplicitMetaPolicy}
			Readers
				version -- {int}
				mod_policy -- {string}
				policy -- {ImplicitMetaPolicy}
values
	OrdererAddresses
		version -- {int}
		mod_policy -- {string}
		value
			addresses -- {array}
				{string - host:port}
	HashingAlgorithm
		version -- {int}
		mod_policy -- {string}
		value
			name -- {string}
	BlockDataHashingStructure
		version -- {int}
		mod_policy -- {string}
		value
			width -- {int}
	Consortium
		version -- {int}
		mod_policy -- {string}
		value
			name -- {string}

Type:

Object

Properties:

Name	Type	Description
`groups.Orderer.groups.<orderer_org_name>`	OrganizationConfigGroup	These are the orderer organizatoin names defined on the network
`groups.Application.groups.<peer_org_name>`	OrganizationConfigGroup	These are the peer organization names defined on the network
`policy`	ImplicitMetaPolicy	These policies point to other policies and specify a threshold as in "ANY", "MAJORITY" or "ALL"

CommitBuildRequest

Type:

Object

Properties:

Name	Type	Description
`endorsement`	Endorsement	Required. The Endorsement that will be committed.

CommitSendRequest

Type:

Object

Properties:

Name	Type	Argument	Description
`targets`	Array.<Committers>	<optional>	Optional. The Committers to send the endorsements. When not included an handler must be included.
	ServiceHandler		[handler] - Optional. The handler to send the endorsements. When not included, targets must be included.
`requestTimeout`	Number	<optional>	Optional. The request timeout

ConfigEnvelope

A ConfigEnvelope contains the channel configurations data and is the main content of a configuration block. Another type of blocks are those that contain endorser transactions, where the main content is an array of Transaction.

A "ConfigEnvelope" will have the following object structure.

config
	sequence -- {int}
	channel_group -- {ConfigGroup}
	type -- {int}
last_update
	signature -- {byte[]}
	payload
		header -- {Header}
		data -- {ConfigUpdateEnvelope}

Type:

Object

ConfigUpdateEnvelope

An object of a protobuf message "ConfigUpdateEnvelope".

A "ConfigUpdateEnvelope" will have the following object structure.

config_update
	channel_id -- {string}
	read_set -- {ChannelConfigGroup}
	write_set -- {ChannelConfigGroup}
	type -- {int}
signatures -- {array}
	signature_header -- {SignatureHeader}
	signature -- {byte[]}

Type:

Object

Properties:

Name	Type	Description
`config_update.read_set`	ChannelConfigGroup	A set of the current version numbers of all configuration items being updated
`config_update.write_set`	ChannelConfigGroup	A set of all configuration items being updated. Must have a version number one greater than the version number of the same item in the read_set along with the new value.

ConnectOptions

Type:

Object

Properties:

Name	Type	Argument	Description
`url`	string		The committer URL with format of 'grpc(s)://host:port'.
`pem`	string		The Endorser's TLS certificate, in PEM format, to use with the grpcs protocol.
`clientKey`	string	<optional>	Optional. The client private key, in PEM format, to use with the grpcs protocol and mutual TLS. When not provided, the key assigned to this client instance will be used.
`clientCert`	string		The public certificate, in PEM format, to use with the grpcs protocol and mutual TLS. When not provided the cert assigned to this client instance will be used.
`requestTimeout`	Number		The timeout to use for request on this connection.
`ssl-target-name-override`	string		Used in test environment only, when the server certificate's hostname (in the 'CN' field) does not match the actual host endpoint that the server process runs at, the application can work around the client TLS verify failure by setting this property to the value of the server certificate's hostname
`*`	string		include any grpc options. These will be passed to the grpc service. A grpc option must have a string key and integer or string value.

ConnectOpts

Type:

Object

Properties:

Name	Type	Argument	Description
`protocol`	string		The protocol to use (either HTTP or HTTPS)
`hostname`	string		The hostname of the Fabric CA server endpoint
`port`	number	<optional>	The port of the Fabric CA server endpoint, Default is 7054
`tlsOptions`	TLSOptions	<optional>	The TLS settings to use when the Fabric CA endpoint uses "https"
`caname`	string	<optional>	The optional name of the CA. Fabric-ca servers support multiple Certificate Authorities from a single server. If omitted or null or an empty string, then the default CA is the target of requests

CryptoSetting

Type:

Object

Properties:

Name	Type	Description
`software`	boolean	Whether to load a software-based implementation (true) or HSM implementation (false)
`keysize`	number	The key size to use for the crypto suite instance.
`algorithm`	string	Digital signature algorithm
`hash`	string	'SHA2' or 'SHA3'

DiscoverRequest

Type:

Object

Properties:

Name	Type	Argument	Description
`asLocalhost`	boolean	<optional>	Optional. When discovery is running in a virtual environment, the host name of peers and orderers created by this service may have to converted to localhost for connections to be established.
`requestTimeout`	number	<optional>	Optional. The request timeout
`refreshAge`	number	<optional>	Optional. The milliseconds before the discovery results will be refreshed automatically. When the Discovery#getDiscoveryResults is called with refresh = true and the age of the discovery results is older then 'refreshAge' the current signed request will be sent to the peer's discovery service. Default: 5 minutes.
`targets`	Array.<Discoverer>		Optional. An array of Discoverer instances. When not included the assigned discoverer will be used. The discoverer may be assigned anytime before the DiscoveryService#send is called.

DiscoveryChaincodeCall

Type:

Object

Properties:

Name	Type	Argument	Description
`name`	string		The name of the chaincode
`collectionNames`	Array.<string>	<optional>	The names of the related collections
`noPrivateReads`	boolean	<optional>	Indicates we do not need to read from private data

DiscoveryChaincodesInterest

Type:

Object

Properties:

Name	Type	Description
`interest`	Array.<DiscoveryChaincodeCall>	An array of DiscoveryChaincodeCall objects.

Endorsement

An endorsement is a signature of an endorser over a proposal response. By producing an endorsement message, an endorser implicitly "approves" that proposal response and the actions contained therein. When enough endorsements have been collected, a transaction can be generated out of a set of proposal responses

An endorsement message has the following structure:

endorser
	Mspid -- {string]
	IdBytes -- {byte[]}
signature -- {byte[]}

Type:

Object

EndorsementResponse

This object is the protobuf object returned from the peer when doing an endorsement of a proposal. The following description is from the protobuf file fabric-protos/protos/peer/proposal_response.protos

Type:

Object

Example

// A ProposalResponse is returned from an endorser to the proposal submitter.
// The idea is that this message contains the endorser's response to the
// request of a client to perform an action over a chaincode (or more
// generically on the ledger); the response might be success/error (conveyed in
// the Response field) together with a description of the action and a
// signature over it by that endorser.  If a sufficient number of distinct
// endorsers agree on the same action and produce signature to that effect, a
// transaction can be generated and sent for ordering.
message ProposalResponse {
	// Version indicates message protocol version
	int32 version = 1;

	// Timestamp is the time that the message
	// was created as  defined by the sender
	google.protobuf.Timestamp timestamp = 2;

	// A response message indicating whether the
	// endorsement of the action was successful
	Response response = 4;

	// The payload of response. It is the bytes of ProposalResponsePayload
	bytes payload = 5;

	// The endorsement of the proposal, basically
	// the endorser's signature over the payload
	Endorsement endorsement = 6;
}

// A response with a representation similar to an HTTP response that can
// be used within another message.
message Response {
	// A status code that should follow the HTTP status codes.
	int32 status = 1;

	// A message associated with the response code.
	string message = 2;

	// A payload that can be used to include metadata with this response.
	bytes payload = 3;
}

message Endorsement {
	// Identity of the endorser (e.g. its certificate)
	bytes endorser = 1;

	// Signature of the payload included in ProposalResponse concatenated with
	// the endorser's certificate; ie, sign(ProposalResponse.payload + endorser)
	bytes signature = 2;
}

Enrollment

Type:

Object

Properties:

Name	Type	Argument	Description
`key`	Object	<optional>	the private key when CSR is created inline.
`certificate`	string		The enrollment certificate in base 64 encoded PEM format
`rootCertificate`	string		Base 64 encoded PEM-encoded certificate chain of the CA's signing certificate

EnrollmentRequest

Type:

Object

Properties:

Name	Type	Argument	Description
`enrollmentID`	string		The registered ID to use for enrollment
`enrollmentSecret`	string		The secret associated with the enrollment ID
`profile`	string	<optional>	The profile name. Specify the 'tls' profile for a TLS certificate; otherwise, an enrollment certificate is issued.
`csr`	string	<optional>	Optional. PEM-encoded PKCS#10 Certificate Signing Request. The message sent from client side to Fabric-ca for the digital identity certificate.
`attr_reqs`	Array.<AttributeRequest>	<optional>	An array of AttributeRequest
`subject`	string	<optional>	Optional. The X509 Subject to use in generating CSR inline (when `csr` is not specified). If not specified, the default subject is built on `enrollmentID`

EnrollmentResponse

Type:

Object

Properties:

Name	Type	Description
`enrollmentCert`	string	PEM-encoded X509 enrollment certificate
`caCertChain`	string	PEM-encoded X509 certificate chain for the issuing certificate authority

EventCallback(error, event)

Callback function that takes two parameters

Parameters:

Name	Type	Description
`error`	Error	The "error" will be null unless this EventService has been shutdown. The shutdown may be caused by a network, connection error, by a call to the "disconnect()" method or when the fabric event service ends the connection to this EventService. This callback will also be called with an Error when the EventService is shutdown due to the last block being received if the service has been setup with an endBlock to be 'newest' or a specific block number that has been seen.
`event`	EventInfo	The "event" will be the EventInfo object.

EventInfo

Type:

Object

Properties:

Name	Type	Argument	Description
`eventService`	EventService		This EventService.
`blockNumber`	Long		The block number that contains this event.
`transactionId`	string	<optional>	The transaction ID of this event
`transactionStatus`	string	<optional>	The transaction status of this event.
`endBlockReceived`	boolean		Indicates if the endBlock as defined by the listener has been seen.
`chaincodeEvents`	Array.<ChaincodeEvent>		An array of ChaincodeEvent.
`block`	object	<optional>	The decode of the full block received
`filteredBlock`	object	<optional>	The decode of the filtered block received
`privateData`	object	<optional>	A data map of any included private data.

EventRegistrationOptions

Type:

Object

Properties:

Name	Type	Argument	Description
`unregister`	boolean		Optional - This options setting indicates the registration should be removed (unregister) when the event is seen or the endBlock seen. When the application is using a timeout to only wait a specified amount of time for the transaction to be seen, the timeout processing should included the manual 'unregister' of the transaction event listener to avoid the event callbacks being called unexpectedly. The default for this setting is different for the different types of event listeners. For block listeners the default is false. For transaction listeners the default is true and the listener will be unregistered when a transaction with the id is seen by this listener or the endBlock is seen. For chaincode listeners the default will be false as the match filter might be intended for many transactions rather than a specific transaction.
`startBlock`	Number \| string	<optional>	Optional. This will have this registered listener look for this event within the block. Blocks that have block numbers less than the startBlock will be ignored by this listener. Note: This EventService must be setup to listen for blocks in this range.
`endBlock`	Number \| string	<optional>	Optional. This will have the registered listener stop looking at blocks when the block number is equal to or greater than the endBlock of this listener. The registered listener will be unregistered if the unregister option is set to true. Note: This EventService must be setup to listen for blocks in this range.

Header

Headers describe basic information about a transaction record, such as its type (configuration update, or endorser transaction, etc.), the id of the channel it belongs to, the transaction id and so on. The header message also contains a common field SignatureHeader that describes critical information about how to verify signatures.

A "Header" will have the following object structure.

channel_header
	type -- {string}
	version -- {int}
	timestamp -- {time}
	channel_id -- {string}
	tx_id -- {string}
	epoch -- {int}
signature_header -- {SignatureHeader}

Type:

Object

HTTPEndpoint

Type:

Object

Properties:

Name	Type	Description
`hostname`	string
`port`	number
`protocol`	string

IdentityRequest

Type:

Object

Properties:

Name	Type	Description
`enrollmentID`	string	Required. The enrollment ID which uniquely identifies an identity
`affiliation`	string	Required. The affiliation path of the new identity
`attrs`	Array.<KeyValueAttribute>	Array of KeyValueAttribute attributes to assign to the user
`type`	string	Optional. The type of the identity (e.g. user, app, peer, orderer, etc)
`enrollmentSecret`	string	Optional. The enrollment secret. If not provided, a random secret is generated.
`maxEnrollments`	number	Optional. The maximum number of times that the secret can be used to enroll. If 0, use the configured max_enrollments of the fabric-ca-server; If > 0 and <= configured max enrollments of the fabric-ca-server, use max_enrollments; If > configured max enrollments of the fabric-ca-server, error.
`caname`	string	Optional. Name of the CA to send the request to within the Fabric CA server

ImplicitMetaPolicy

ImplicitMetaPolicy is a policy type which depends on the hierarchical nature of the configuration It is implicit because the rule is generate implicitly based on the number of sub policies It is meta because it depends only on the result of other policies

When evaluated, this policy iterates over all immediate child sub-groups, retrieves the policy of name sub_policy, evaluates the collection and applies the rule.

For example, with 4 sub-groups, and a policy name of "Readers", ImplicitMetaPolicy retrieves each sub-group, retrieves policy "Readers" for each subgroup, evaluates it, and, in the case of ANY 1 satisfied is sufficient, ALL would require 4 signatures, and MAJORITY would require 3 signatures.

An "ImplicitMetaPolicy" will have the following object structure.

type -- IMPLICIT_META
policy
	sub_policy -- {string}
	rule -- ANY | ALL | MAJORITY

Type:

Object

KeyValueAttribute

Type:

Object

Properties:

Name	Type	Argument	Description
`name`	string		The key used to reference the attribute
`value`	string		The value of the attribute
`ecert`	boolean	<optional>	Optional, A value of true indicates that this attribute should be included in an enrollment certificate by default

MetadataSignature

A signature over the metadata of a block, to ensure the authenticity of the metadata that describes a Block.

signature_header {SignatureHeader}
signature -- {byte[]}

Type:

Object

MspConfig

Type:

Object

Properties:

Name	Type	Description
`id`	string	The identifier for this MSP, Typically the organization name.
`name`	string	The name for this MSP, Typically the organization name. To avoid confusion the name and ID should be the same. This will be key to finding this MSP configuration.
`organizationalUnitIdentifiers`	Array.<string>
`rootCerts`	Array.<string>	List of root certificates trusted by this MSP. They are used upon certificate validation.
`intermediateCerts`	Array.<string>	List of intermediate certificates trusted by this MSP. They are used upon certificate validation as follows: Validation attempts to build a path from the certificate to be validated (which is at one end of the path) and one of the certs in the RootCerts field (which is at the other end of the path). If the path is longer than 2, certificates in the middle are searched within the Intermediate Certificates pool.
`admins`	string	Identity denoting the administrator of this MSP
`tlsRootCerts`	string	TLS root certificates trusted by this MSP
`tlsIntermediateCerts`	string	TLS intermediate certificates trusted by this MSP

OrganizationConfigGroup

Each participating organization of the channel gets represented in a section in the configuration block as described below. Critical information about the organzation such as its Membership Service Provider (MSP) content and its pre-defined policies that form the basis of the channel's access control policies (Admins, Writers and Readers) are contained in these sections.

A organizational configuration will have the following object structure.

version -- {int}
mod_policy -- {string}
values
	MSP
		version -- {int}
		mod_policy -- {string}
		value
			type -- {int}
			config
				name -- {string}
				root_certs -- {string[]}
				intermediate_certs -- {string[]}
				admins -- {string[]}
				revocation_list -- {string[]}
				signing_identity -- {byte[]}
				organizational_unit_identifiers -- {string[]}
policies
	 Admins
			version -- {int}
			mod_policy -- {string}
			policy -- {SignaturePolicy}
	 Writers
			version -- {int}
			mod_policy -- {string}
			policy -- {SignaturePolicy}
	 Readers
			version -- {int}
			mod_policy -- {string}
			policy -- {SignaturePolicy}

Type:

Object

ProcessedTransaction

Type:

Object

Properties:

Name	Type	Description
`validationCode`	number	See this list for all the defined validation codes
`transactionEnvelope`	Object	Encapsulates the transaction and the signature over it. It has the following structure: signature -- {byte[]} payload -- {} header -- {Header} data -- {Transaction}

ProposalResponse

Type:

Object

Properties:

Name	Type	Description
`errors`	Array.<Error>	errors returned from the endorsement
`responses`	Array.<EndorsementResponse>	The endorsements returned from the endorsing peers.
`queryResults`	Array.<Buffer>	the results as extracted from the endorsement EndorsementResponse from an Query endorsement that was only a query and will not be committed.

RegisterRequest

Type:

Object

Properties:

Name	Type	Description
`enrollmentID`	string	ID which will be used for enrollment
`enrollmentSecret`	string	Optional enrollment secret to set for the registered user. If not provided, the server will generate one.
`role`	string	Optional arbitrary string representing a role value for the user
`affiliation`	string	Affiliation with which this user will be associated, like a company or an organization
`maxEnrollments`	number	The maximum number of times this user will be permitted to enroll
`attrs`	Array.<KeyValueAttribute>	Array of KeyValueAttribute attributes to assign to the user

RegistrationOpts

Type:

Object

Properties:

Name	Type	Argument	Description
`startBlock`	number \| string \| Long	<optional>	Optional. The starting block number for event checking. When included, the peer's event service will be asked to start sending blocks from this block number. This is how to resume or replay missed blocks that were added to the ledger. Default is the latest block on the ledger.
`endBlock`	number \| string \| Long	<optional>	Optional. The ending block number for event checking. When included, the peer's event service will be asked to stop sending blocks once this block is delivered. This is how to replay missed blocks that were added to the ledger. When a startBlock is not included, the endBlock must be equal to or larger than the current channel block height.
`unregister`	boolean		Optional - This options setting indicates the registration should be removed (unregister) when the event is seen. When the application is using a timeout to wait a specified amount of time for the transaction to be seen, the timeout processing should included the manual 'unregister' of the transaction event listener to avoid the event callbacks being called unexpectedly. The default for this setting is different for the different types of event listeners. For block listeners the default is true, however the event listener is assumed to have seen the final event only if the end_block was set as a option and that end_block was seen by the the listener. For transaction listeners the default is true and the listener will be unregistered when a transaction with the id is seen by this listener. For chaincode listeners the default will be false as the match filter might be intended for many transactions rather than a specific transaction or block as in the other listeners. For all listeners if not set and the endBlock has been set, the listener will be automatically unregistered.

REQUEST

TIMEOUT The Error message string that indicates that the request operation has timed out due to a remote node issue. If there is an issue with the local system a 'SYSTEM TIMEOUT' error message will be returned. The operation will only use one timer for both types of timeouts. The timer will start running as the operation begins. If the timer expires before the local instance is able to make the outbound request then 'SYSTEM TIMEOUT' error will be returned. If the local instance is able to make the outbound request and the timer expires before the remote node responds then the 'REQUEST TIMEOUT' is returned. The timer is controlled by the 'requestTimeout' setting or passed on a call that makes an outbound request

Type:

Error

Examples

'client.setConfigSetting('requestTimeout', 3000)'

'channel.sendTranaction(request, 3000)'

Restriction

Type:

Object

Properties:

Name	Type	Description
`revokedBefore`	Date	Include certificates that were revoked before this UTC timestamp (in RFC3339 format) in the CRL
`revokedAfter`	Date	Include certificates that were revoked after this UTC timestamp (in RFC3339 format) in the CRL
`expireBefore`	Date	Include revoked certificates that expire before this UTC timestamp (in RFC3339 format) in the CRL
`expireAfter`	Date	Include revoked certificates that expire after this UTC timestamp (in RFC3339 format) in the CRL

SendProposalRequest

Type:

Object

Properties:

Name	Type	Argument	Description
`targets`	Array.<Endorser>	<optional>	Optional. The peers to send the proposal.
	ServiceHandler		[handler] - Optional. The handler to send the proposal.
`requestTimeout`	Number	<optional>	Optional. The request timeout

ServiceResponse

Type:

Object

Properties:

Name	Type	Description
`Success`	boolean	Boolean indicating if the request was successful
`Result`	Object	The result of this request
`Errors`	Array.<ServiceResponseMessage>	An array of error messages (code and message)
`Messages`	Array.<ServiceResponseMessage>	An array of information messages (code and message)

ServiceResponseMessage

Type:

Object

Properties:

Name	Type	Description
`code`	number	Integer code denoting the type of message
`message`	string	A more specific message

SignatureHeader

An object that is part of all signatures in Hyperledger Fabric. The "creator" field has two important pieces of information about the identity of the signer, the organization (Mspid) that the signer belongs to, and the certificate (IdBytes). The "nonce" field is a unique value to guard against replay attacks.

creator
	Mspid -- {string}
	IdBytes -- {byte[]}
nonce -- {byte[]}

Type:

Object

SignaturePolicy

SignaturePolicy is a recursive message structure which defines a featherweight DSL for describing policies which are more complicated than 'exactly this signature'. The NOutOf operator is sufficent to express AND as well as OR, as well as of course N out of the following M policies.

SignedBy implies that the signature is from a valid certificate which is signed by the trusted authority specified in the bytes. This will be the certificate itself for a self-signed certificate and will be the CA for more traditional certificates

A "SignaturePolicy" will have the following object structure.

type -- SIGNATURE
rule
	Type -- n_out_of
	n_out_of
		N -- {int}
		rules -- {array}
			Type -- signed_by
			signed_by -- {int}
	identities -- {array}
		principal_classification -- {int}
		msp_identifier -- {string}
		Role -- MEMBER | ADMIN

Type:

Object

StartEventRequest

Type:

Object

Properties:

Name	Type	Argument	Description
`targets`	Array.<Eventer>		The Eventers to send the start stream request.
`requestTimeout`	Number	<optional>	Optional. The request timeout

StartRequestOptions

Type:

Object

Properties:

Name	Type	Argument	Description
`blockType`	string	<optional>	Optional. To indicate that the event service on the peer will be sending full blocks, filtered blocks or private data blocks to this EventService. The default will be 'filtered' with 'full' for full blocks and 'private' for blocks with private data. Filtered blocks have the required information to provided transaction status and chaincode event names, however no chaincode event payload. When using the non filtered blocks (full blocks or private data) the user will be required to have access to receive full blocks and the private data. Registering a block listener when listening for filtered blocks may not provide sufficient information in the blocks received.
`startBlock`	Number \| string	<optional>	Optional. This will have the service setup to start sending blocks back to the event hub at the block with this number. If the service should start with the last block this instance has seen use the string 'last_seen'. If the service should start with the oldest block on the ledger use the string 'oldest'. If the service should start with the latest block on the ledger, use the string 'latest' or do not include a 'startBlock'. Default is to start with the latest block on the ledger.
`endBlock`	Number \| string	<optional>	Optional. This will have the service setup to end sending blocks back to the event hub at the block with this number. If the service should end with the last block it has seen use the string 'last_seen'. If the service should end with the current block on the ledger use the string 'newest'. Default is to continue to send.

SYSTEM

TIMEOUT The Error message string that indicates that the request operation has timed out due to a system issue. This will indicate that the issue is local rather than remote. If there is an issue with the remote node a 'REQUEST TIMEOUT' error message will be returned. The operation will only use one timer for both types of timeouts. The timer will start running as the operation begins. If the timer expires before the local instance is able to make the outbound request then 'SYSTEM TIMEOUT' error will be returned. If the local instance is able to make the outbound request and the timer expires before the remote node responds then the 'REQUEST TIMEOUT' is returned. The timer is controlled by the 'requestTimeout' setting or passed on a call that makes an outbound request

Type:

Error

Examples

'client.setConfigSetting('requestTimeout', 3000)'

'channel.sendTranaction(request, 3000)'

TLSOptions

Type:

Object

Properties:

Name	Type	Argument	Default	Description
`trustedRoots`	Array.<string>			Array of PEM-encoded trusted root certificates
`verify`	boolean	<optional>	true	Determines whether or not to verify the server certificate when using TLS

Transaction

A Transaction, or "Endorser Transaction", is the result of invoking chaincodes to collect endorsements, getting globally ordered in the context of a channel, and getting validated by the committer peer as part of a block before finally being formally "committed" to the ledger inside a Block. Each transaction contains an array of "actions" representing different steps for executing a transaction, and those steps will be processed atomically, meaning if any one step failed then the whole transaction will be marked as rejected.

Each entry of the "actions" array contains a chaincode proposal and corresponding proposal responses that encapsulate the endorsing peer's decisions on whether the proposal is considered valid. Note that even if a transaction proposal(s) is considered valid by the endorsing peers, it may still be rejected by the committers during transaction validation. Whether a transaction as a whole is valid or not, is not reflected in the transaction record itself, but rather recorded in a separate field in the Block's metadata.

A "Transaction" will have the following object structure.

actions {array}
	header -- {SignatureHeader}
	payload
		chaincode_proposal_payload
			input -- {ChaincodeInvocationSpec} for a endorser transaction
		action
			proposal_response_payload
				proposal_hash -- {byte[]}
				extension
					results
						data_model -- {int}
						ns_rwset -- {array}
							namespace -- {string}
							rwset
								reads -- {array}
									key -- {string}
									version
										block_num -- {number}
										tx_num -- {number}
								range_queries_info -- {array}
								writes -- {array}
									key -- {string}
									is_delete -- {boolean}
									value -- {string}
								metadata_writes -- {array}
									key -- {string}
									entries -- {array}
										name -- {string}
										value -- {byte[]}
						collection_hashed_rwset -- {array}
							collection_name -- {string}
							hashed_rwset
								hashed_reads -- {array}
									key_hash -- {byte[]}
									version
										block_num -- {number}
										tx_num -- {number}
								hashed_writes -- {array}
									key_hash -- {byte[]}
									is_delete -- {boolean}
									value_hash -- {byte[]}
								metadata_writes -- {array}
									key_hash -- {byte[]}
									entries -- {array}
										name -- {string}
										value -- {byte[]}
							pvt_rwset_hash -- {byte[]}
					events
						chaincode_id --  {string}
						tx_id -- {string}
						event_name -- {string}
						payload -- {byte[]}
					response
						status -- {int}
						message -- {string}
						payload -- {byte[]}
			endorsements -- {Endorsement[]}

Type:

Object