Blockchain tutorial fabric1.0 Source Code Analysis configuration transaction-generate Channel Configuration 2

Blockchain tutorialFabric1.0 Source Code Analysis configuration transaction-generate Channel Configuration 2. Generator interface implementation, that is, bootstrapper.

Type bootstrapper struct {???? Channelgroups [] * CB. configgroup ???? Orderergroups [] * CB. configgroup ???? Applicationgroups [] * CB. configgroup ???? Consortiumsgroups [] * CB. configgroup} func new (CONF * genesisconfig. profile) generatorfunc (BS * bootstrapper) channeltemplate () configtx. templatefunc (BS * bootstrapper) genesisblock () * CB. blockfunc (BS * bootstrapper) genesisblockforchannel (channelid string) * CB. block // code in common/configtx/tool/Provisional. go

The generator code of func new (CONF * genesisconfig. Profile) is as follows:

Func new (CONF * genesisconfig. Profile) generator {???? BS: = & bootstrapper {???????? Channelgroups: [] * CB. configgroup {???????????? Config. defaulthashingalgorithm (), // default hash function ???????????? Config. defablockblockdatahashingstructure (), // default block data hash structure ???????????????????????? // Default channel policy, including read policy, write policy, and management policy ???????????? // Readerspolicykey = "readers", implicitmetapoicy_any, arbitrary ???????????? Policies. templateimplicitmetaanypolicy ([] string {}, configvaluesmsp. readerspolicykey ),???????????? // Writerspolicykey = "writers", implicitmetapoicy_any, arbitrary ???????????? Policies. templateimplicitmetaanypolicy ([] string {}, configvaluesmsp. writerspolicykey ),???????????? // Adminspolicykey = "Admins", implicitmetapoicy_majority, the majority ???????????? Policies. templateimplicitmetamajoritypolicy ([] string {}, configvaluesmsp. adminspolicykey ),????????},????}???? If Conf. orderer! = Nil {// system Channel Configuration ???????? OA: = config. templateordereraddresses (Conf. orderer. addresses) // set the orderer address ???????? Oa. Values [config. ordereraddresseskey]. modpolicy = ordereradminspolicy // ordereradminspolicy = "/channel/orderer/Admins "???????? BS. orderergroups = [] * CB. configgroup {???????????? Oa ,???????????? Config. templateconsensustype (Conf. orderer. orderertype), // set the consensus plug-in type ???????????? Config. templatebatchsize (& AB. batchsize {// set the batch size ???????????????? Maxmessagecount: Conf. orderer. batchsize. maxmessagecount ,???????????????? Absolutemaxbytes: Conf. orderer. batchsize. absolutemaxbytes ,???????????????? Preferredmaxbytes: Conf. orderer. batchsize. preferredmaxbytes ,????????????}),???????????? Config. templatebatchtimeout (Conf. orderer. batchtimeout. String (), // set the batch processing timeout ???????????? Config. templatechannelrestrictions (Conf. orderer. maxchannels), // set the maximum number of channels ???????????? // Initialize the read, write, and management policies of orderer ???????????? Policies. Keys ([] string {config. orderergroupkey}, blockvalidationpolicykey, configvaluesmsp. writerspolicykey, CB. implicitmetapoicy_any ),???????????? Policies. templateimplicitmetaanypolicy ([] string {config. orderergroupkey}, configvaluesmsp. readerspolicykey ),???????????? Policies. templateimplicitmetaanypolicy ([] string {config. orderergroupkey}, configvaluesmsp. writerspolicykey ),???????????? Policies. templateimplicitmetamajoritypolicy ([] string {config. orderergroupkey}, configvaluesmsp. adminspolicykey ),????????}???????? For _, org: = range Conf. orderer. Organizations {???????????? Mspconfig, err: = MSP. getverifyingmspconfig (Org. mspdir, org. ID )???????????? BS. orderergroups = append (BS. orderergroups ,???????????????? Configvaluesmsp. templategroupmspwithadminroleprincipal ([] string {config. orderergroupkey, org. name },???????????????????? Mspconfig, org. adminprincipal = genesisconfig. adminroleadminprincipal ,????????????????),????????????)??????? ?}???????? Switch Conf. orderer. orderertype {???????? Case consensustypesolo :???????? Case consensustypekafka :???????????? BS. orderergroups = append (BS. orderergroups, config. templatekafkabrokers (Conf. orderer. Kafka. Brokers) // set Kafka ???????? Default :????????}????}???? If Conf. application! = Nil {// application channel configuration ???????? BS. applicationgroups = [] * CB. configgroup {???????????? Policies. templateimplicitmetaanypolicy ([] string {config. applicationgroupkey}, configvaluesmsp. readerspolicykey ),???????????? Policies. templateimplicitmetaanypolicy ([] string {config. applicationgroupkey}, configvaluesmsp. writerspolicykey ),???????????? Policies. templateimplicitmetamajoritypolicy ([] string {config. applicationgroupkey}, configvaluesmsp. adminspolicykey ),????????}???????? For _, org: = range Conf. application. Organizations {???????????? Mspconfig, err: = MSP. getverifyingmspconfig (Org. mspdir, org. ID )???????????? BS. applicationgroups = append (BS. applicationgroups ,???????????????? Configvaluesmsp. templategroupmspwithadminroleprincipal ([] string {config. applicationgroupkey, org. name },???????????????????? Mspconfig, org. adminprincipal = genesisconfig. adminroleadminprincipal ,????????????????),????????????)??????? ????? VaR anchorprotos [] * pb. anchorpeer ???????????? For _, anchorpeer: = range org. anchorpeers {???????????????? Anchorprotos = append (anchorprotos, & Pb. anchorpeer {???????????????????? HOST: anchorpeer. Host ,???????????????????? Port: int32 (anchorpeer. port ),????????????????})????????????}?????? ?????? BS. applicationgroups = append (BS. applicationgroups, config. templateanchorpeers (Org. Name, anchorprotos ))????????}????}???? If Conf. consortiums! = Nil {// consortium related ???????? TCG: = config. templateconsortiumsgroup ()???????? TCG. Groups [config. consortiumsgroupkey]. modpolicy = ordereradminspolicy ???????? TCG. Groups [config. consortiumsgroupkey]. Policies [configvaluesmsp. adminspolicykey] = & CB. configpolicy {???????????? Policy: & CB. Policy {???????????????? Type: int32 (CB. policy_signature ),???????????????? Value: utils. marshalorpanic (cauthdsl. acceptallpolicy ),????????????},???????????? Modpolicy: ordereradminspolicy ,????????}???????? BS. consortiumsgroups = append (BS. consortiumsgroups, TCG )???????? For consortiumname, consorparts: = range Conf. consortiums {???????????? CG: = config. templateconsortiumchannelcreationpolicy (consortiumname, policies. implicitmetapoicywithsubpolicy (???????????????? Configvaluesmsp. adminspolicykey ,???????????????? CB. implicitmetapoicy_any ,????????????). Policy )???????????? CG. Groups [config. consortiumsgroupkey]. Groups [consortiumname]. modpolicy = ordereradminspolicy ???????????? CG. Groups [config. consortiumsgroupkey]. Groups [consortiumname]. Values [config. channelcreationpolicykey]. modpolicy = ordereradminspolicy ???????????? BS. consortiumsgroups = append (BS. consortiumsgroups, CG )???????????? For _, org: = range consorations. Organizations {???????????????? Mspconfig, err: = MSP. getverifyingmspconfig (Org. mspdir, org. ID )???????????????? BS. consortiumsgroups = append (BS. consortiumsgroups ,???????????????????? Configvaluesmsp. templategroupmspwithadminroleprincipal (???????????????????????? [] String {config. consortiumsgroupkey, consortiumname, org. name },???????????????????????? Mspconfig, org. adminprincipal = genesisconfig. adminroleadminprincipal ,????????????????????),???????????????? )????????????}????????}????}???? Return BS} // code in common/configtx/tool/Provisional. Go

Func (BSBootstrapper) genesisblockforchannel (channelid string)The CB. Block Code is as follows:

Func (BS * bootstrapper) genesisblockforchannel (channelid string) * CB. Block {???? Block, err: = Genesis. newfactoryimpl (???????? Configtx. newmodpolicysettingtemplate (???????????? Configvaluesmsp. adminspolicykey ,???????????? Configtx. newcompositetemplate (???????????????? Configtx. newsimpletemplate (BS. consortiumsgroups ...),???????????????? BS. channeltemplate (),????????????),????????),????). Block (channelid )???? Return block} // code in common/configtx/tool/Provisional. Go

5. configtxgen command 5.1, Main Function

Func main (){???? VaR outputblock, outputchannelcreatetx, profile, channelid, inspectblock, inspectchannelcreatetx, outputanchorpeersupdate, asorg string ???? //-Outputblock: the initial block is written to the specified file ???? Flag. stringvar (& outputblock, "outputblock", "", "The path to write the Genesis block to (if set )")???? //-Channelid: Specifies the channel name ???? Flag. stringvar (& channelid, "channelid", provisional. testchainid, "the channel ID to use in the configtx ")???? //-Outputcreatechanneltx: writes the channel creation transaction to the specified file ???? Flag. stringvar (& outputchannelcreatetx, "outputcreatechanneltx", "", "The path to write a channel creation configtx to (if set )")???? //-Profile: Specifies the profile ???? Flag. stringvar (& profile, "Profile", genesisconfig. sampleinsecureprofile, "the profile from configtx. yaml to use for generation .")???? //-Inspectblock: prints the configuration information of the specified block ???? Flag. stringvar (& inspectblock, "inspectblock", "", "prints the configuration contained in the block at the specified path ")???? //-Inspectchannelcreatetx: print the configuration update information in the transaction file created by the channel ???? Flag. stringvar (& inspectchannelcreatetx, "inspectchannelcreatetx", "", "prints the configuration contained in the transaction at the specified path ")???? //-Outputanchorpeersupdate: Specifies the-asorg ???? Flag. stringvar (& outputanchorpeersupdate, "outputanchorpeersupdate", "", "creates an config update to update an anchor peer (works only with the default channel creation, and only for the first update) ")???? //-Asorg: executes the Update Configuration transaction with the specified identity, such as updating the configuration information of the anchor node ???? Flag. stringvar (& asorg, "asorg", "", "performs the config generation as a participant organization (by name), only including values in the write set that org (likely) has privilege to set ")???? Flag. parse ()???? Factory. initfactories (NiL )???? Config: = genesisconfig. Load (profile) // read the specified configuration ???? If outputblock! = "" {// Generate the initial orderer Service Startup block ???????? Err: = dooutputblock (config, channelid, outputblock )????}???? If outputchannelcreatetx! = "" {// Generate the configuration transaction ???????? Err: = dooutputchannelcreatetx (config, channelid, outputchannelcreatetx )????}???? If outputanchorpeersupdate! = "" {// Generate the anchor node configuration Update file ???????? Err: = dooutputanchorpeersupdate (config, channelid, outputanchorpeersupdate, asorg )????}} // Code in common/configtx/tool/configtxgen/Main. Go

5.2. dooutputblock (generate the initial block for the orderer service to start, that is, the initial block file of the system channel)

Func dooutputblock (config * genesisconfig. Profile, channelid string, outputblock string) error {???? Pgen: = provisional. New (config) // build a generator instance ???? Genesisblock: = pgen. genesisblockforchannel (channelid) // generate the creation block ???? Err: = ioutil. writefile (outputblock, utils. marshalorpanic (genesisblock), 0644) // write the file into the creation block ???? Return nil} // code in common/configtx/tool/configtxgen/Main. Go

For more information about Genesis, see configtx (configuration transaction) # genesis (system channel creation block) in fabric 1.0 source code notes)

5.3. dooutputchannelcreatetx (generate configuration transactions for new application channels)

Func dooutputchannelcreatetx (CONF * genesisconfig. Profile, channelid string, outputchannelcreatetx string) error {???? VaR orgnames [] string ???? For _, org: = range Conf. application. Organizations {???????? Orgnames = append (orgnames, org. Name )????}???? Configtx, err: = configtx. makechaincreationtransaction (channelid, Conf. consortings, nil, orgnames ...)???? Err = ioutil. writefile (outputchannelcreatetx, utils. financialorpanic (configtx), 0644 )???? Return nil} // code in common/configtx/tool/configtxgen/Main. Go

5.4. dooutputanchorpeersupdate (generate the anchor node configuration Update file)

Func dooutputanchorpeersupdate (CONF * genesisconfig. Profile, channelid string, outputanchorpeersupdate string, asorg string) error {???? VaR Org * genesisconfig. Organization ???? For _, iorg: = range Conf. application. Organizations {???????? If iorg. Name = asorg {???????????? Org = iorg ????????}????}???? Anchorpeers: = make ([] * pb. anchorpeer, Len (Org. anchorpeers ))???? For I, anchorpeer: = range org. anchorpeers {???????? Anchorpeers [I] = & Pb. anchorpeer {???????????? HOST: anchorpeer. Host ,???????????? Port: int32 (anchorpeer. Port ),????????}????}???? Configgroup: = config. templateanchorpeers (Org. Name, anchorpeers )???? Configgroup. Groups [config. applicationgroupkey]. Groups [org. Name]. Values [config. anchorpeerskey]. modpolicy = mspconfig. adminspolicykey ???? Configupdate: = & CB. configupdate {???????? Channelid: channelid ,???????? Writeset: configgroup ,???????? Readset: CB. newconfiggroup (),????}???? Configupdate. readset. Groups [config. applicationgroupkey] = CB. newconfiggroup ()???? Configupdate. readset. Groups [config. applicationgroupkey]. Version = 1 ???? Configupdate. readset. Groups [config. applicationgroupkey]. modpolicy = mspconfig. adminspolicykey ???? Configupdate. readset. Groups [config. applicationgroupkey]. Groups [org. Name] = CB. newconfiggroup ()???? Configupdate. readset. Groups [config. applicationgroupkey]. Groups [org. Name]. Values [config. mspkey] = & CB. configvalue {}???? Configupdate. readset. Groups [config. applicationgroupkey]. Groups [org. Name]. Policies [mspconfig. readerspolicykey] = & CB. configpolicy {}???? Configupdate. readset. Groups [config. applicationgroupkey]. Groups [org. Name]. Policies [mspconfig. writerspolicykey] = & CB. configpolicy {}???? Configupdate. readset. Groups [config. applicationgroupkey]. Groups [org. Name]. Policies [mspconfig. adminspolicykey] = & CB. configpolicy {}???? Configupdate. writeset. Groups [config. applicationgroupkey]. Version = 1 ???? Configupdate. writeset. Groups [config. applicationgroupkey]. modpolicy = mspconfig. adminspolicykey ???? Configupdate. writeset. Groups [config. applicationgroupkey]. Groups [org. Name]. Version = 1 ???? Configupdate. writeset. Groups [config. applicationgroupkey]. Groups [org. Name]. modpolicy = mspconfig. adminspolicykey ???? Configupdate. writeset. Groups [config. applicationgroupkey]. Groups [org. Name]. Values [config. mspkey] = & CB. configvalue {}???? Configupdate. writeset. Groups [config. applicationgroupkey]. Groups [org. Name]. Policies [mspconfig. readerspolicykey] = & CB. configpolicy {}???? Configupdate. writeset. Groups [config. applicationgroupkey]. Groups [org. Name]. Policies [mspconfig. writerspolicykey] = & CB. configpolicy {}???? Configupdate. writeset. Groups [config. applicationgroupkey]. Groups [org. Name]. Policies [mspconfig. adminspolicykey] = & CB. configpolicy {}???? Configupdateenvelope: = & CB. configupdateenvelope {???????? Configupdate: utils. financialorpanic (configupdate ),????}???? Update: = & CB. Envelope {???????? Payload: utils. financialorpanic (& CB. Payload {???????????? Header: & CB. header {???????????????? Channelheader: utils. financialorpanic (& CB. channelheader {???????????????????? Channelid: channelid ,???????????????????? Type: int32 (CB. headertype_config_update ),????????????????}),????????????},???? ???????? Data: utils. financialorpanic (configupdateenvelope ),????????}),????}???? Err: = ioutil. writefile (outputanchorpeersupdate, utils. financialorpanic (update), 0644 )???? Return nil} // code in common/configtx/tool/configtxgen/Main. Go

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Blockchain tutorial fabric1.0 Source Code Analysis configuration transaction-generate Channel Configuration 2