Class: Immudb::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/immudb/client.rb

Instance Method Summary collapse

Constructor Details

#initialize(url: nil, host: nil, port: nil, username: nil, password: nil, database: nil, timeout: nil, rs: nil) ⇒ Client

Returns a new instance of Client.

Raises:

  • (ArgumentError) 


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# File 'lib/immudb/client.rb', line 15

def initialize(url: nil, host: nil, port: nil, username: nil, password: nil, database: nil, timeout: nil, rs: nil)
  url ||= ENV["IMMUDB_URL"]
  if url
    uri = URI.parse(url)

    if uri.scheme != "immudb"
      raise ArgumentError, "Expected url to start with immudb://"
    end

    host ||= uri.host
    port ||= uri.port
    username ||= uri.username
    password ||= uri.password
    database ||= uri.path.sub(/\A\//, "")
  end

  host ||= "localhost"
  port ||= 3322
  username ||= "immudb"
  password ||= "immudb"
  database ||= "defaultdb"

  raise ArgumentError, "Invalid host" if host.include?(":")

  @rs = rs || RootService.new

  @interceptor = Interceptor.new
  @grpc = Schema::ImmuService::Stub.new("#{host}:#{port.to_i}", :this_channel_is_insecure, timeout: timeout, interceptors: [interceptor])

  (username, password)
  use_database(database)
end

Instance Method Details

#change_password(user, old_password:, new_password:) ⇒ Object 



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# File 'lib/immudb/client.rb', line 67

def change_password(user, old_password:, new_password:)
  req = Schema::ChangePasswordRequest.new(user: user, oldPassword: old_password, newPassword: new_password)
  grpc.change_password(req)
  nil
end

#clean_index ⇒ Object

management



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# File 'lib/immudb/client.rb', line 252

def clean_index
  grpc.compact_index(Google::Protobuf::Empty.new)
  nil
end

#create_database(name) ⇒ Object 



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# File 'lib/immudb/client.rb', line 209

def create_database(name)
  req = Schema::Database.new(databaseName: name)
  grpc.create_database(req)
  nil
end

#create_user(user, password:, permission:, database:) ⇒ Object 



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# File 'lib/immudb/client.rb', line 61

def create_user(user, password:, permission:, database:)
  req = Schema::CreateUserRequest.new(user: user, password: password, permission: PERMISSION.fetch(permission), database: database)
  grpc.create_user(req)
  nil
end

#describe_table(name) ⇒ Object 



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# File 'lib/immudb/client.rb', line 285

def describe_table(name)
  req = Schema::Table.new(tableName: name)
  res = grpc.describe_table(req)
  sql_result(res).to_a
end

#get(key) ⇒ Object 



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# File 'lib/immudb/client.rb', line 132

def get(key)
  req = Schema::KeyRequest.new(key: key)
  grpc.get(req).value
end

#get_all(keys) ⇒ Object 



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# File 'lib/immudb/client.rb', line 204

def get_all(keys)
  req = Schema::KeyListRequest.new(keys: keys)
  grpc.get_all(req).entries.to_h { |v| [v.key, v.value] }
end

#healthy? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/immudb/client.rb', line 257

def healthy?
  grpc.health(Google::Protobuf::Empty.new).status
rescue Error
  false
end

#history(key, offset: nil, limit: nil, desc: false) ⇒ Object

history



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# File 'lib/immudb/client.rb', line 229

def history(key, offset: nil, limit: nil, desc: false)
  req = Schema::HistoryRequest.new(key: key, offset: offset, limit: limit, desc: desc)
  grpc.history(req).entries.map do |entry|
    {
      tx: entry.tx,
      value: entry.value
    }
  end
end

#inspect ⇒ Object

hide token



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# File 'lib/immudb/client.rb', line 292

def inspect
  to_s
end

#list_databases ⇒ Object 



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# File 'lib/immudb/client.rb', line 215

def list_databases
  grpc.database_list(Google::Protobuf::Empty.new).databases.map(&:databaseName)
end

#list_tables ⇒ Object 



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# File 'lib/immudb/client.rb', line 281

def list_tables
  grpc.list_tables(Google::Protobuf::Empty.new).rows.map { |r| r.values.first.s }
end

#list_users ⇒ Object 



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# File 'lib/immudb/client.rb', line 48

def list_users
  permission_map = PERMISSION.invert
  grpc.list_users(Google::Protobuf::Empty.new).users.map do |user|
    {
      user: user.user,
      permissions: user.permissions.map { |v| {database: v.database, permission: permission_map.fetch(v.permission)} },
      created_by: user.createdby,
      created_at: Time.parse(user.createdat),
      active: user.active
    }
  end
end

#scan(seek_key: nil, prefix: nil, desc: false, limit: nil, since_tx: nil, no_wait: false) ⇒ Object 



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# File 'lib/immudb/client.rb', line 239

def scan(seek_key: nil, prefix: nil, desc: false, limit: nil, since_tx: nil, no_wait: false)
  req = Schema::ScanRequest.new(seekKey: seek_key, prefix: prefix, desc: desc, limit: limit, sinceTx: since_tx, noWait: no_wait)
  grpc.scan(req).entries.map do |entry|
    {
      tx: entry.tx,
      key: entry.key,
      value: entry.value
    }
  end
end

#set(key, value) ⇒ Object 



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# File 'lib/immudb/client.rb', line 73

def set(key, value)
  req = Schema::SetRequest.new(KVs: [Schema::KeyValue.new(key: key, value: value)])
  grpc.set(req)
  nil
end

#set_all(values) ⇒ Object 



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# File 'lib/immudb/client.rb', line 198

def set_all(values)
  req = Schema::SetRequest.new(KVs: values.map { |k, v| Schema::KeyValue.new(key: k, value: v) })
  grpc.set(req)
  nil
end

#sql_exec(sql, params = {}) ⇒ Object

sql



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# File 'lib/immudb/client.rb', line 269

def sql_exec(sql, params = {})
  req = Schema::SQLExecRequest.new(sql: sql, params: sql_params(params))
  grpc.sql_exec(req)
  nil
end

#sql_query(sql, params = {}) ⇒ Object 



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# File 'lib/immudb/client.rb', line 275

def sql_query(sql, params = {})
  req = Schema::SQLQueryRequest.new(sql: sql, params: sql_params(params))
  res = grpc.sql_query(req)
  sql_result(res)
end

#use_database(name) ⇒ Object 



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# File 'lib/immudb/client.rb', line 219

def use_database(name)
  req = Schema::Database.new(databaseName: name)
  res = grpc.use_database(req)
  interceptor.token = res.token
  @rs.init(name, grpc)
  nil
end

#verified_get(key) ⇒ Object 



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# File 'lib/immudb/client.rb', line 137

def verified_get(key)
  state = @rs.get
  req = Schema::VerifiableGetRequest.new(
    keyRequest: Schema::KeyRequest.new(key: key),
    proveSinceTx: state.txId
  )
  ventry = grpc.verifiable_get(req)

  inclusion_proof = HTree.inclusion_proof_from(ventry.inclusionProof)
  dual_proof = HTree.dual_proof_from(ventry.verifiableTx.dualProof)

  if ventry.entry.referencedBy.nil? || ventry.entry.referencedBy.key == ""
    vTx = ventry.entry.tx
    kv = Store.encode_kv(key, ventry.entry.value)
  else
    vTx = ventry.entry.referencedBy.tx
    kv = store.encode_reference(ventry.entry.referencedBy.key, ventry.entry.key, ventry.entry.referencedBy.atTx)
  end

  if state.txId <= vTx
    eh = Store.digest_from(ventry.verifiableTx.dualProof.targetTxMetadata.eH)
    source_id = state.txId
    source_alh = Store.digest_from(state.txHash)
    target_id = vTx
    target_alh = dual_proof.targetTxMetadata.alh
  else
    eh = Store.digest_from(ventry.verifiableTx.dualProof.sourceTxMetadata.eH)
    source_id = vTx
    source_alh = dual_proof.sourceTxMetadata.alh
    target_id = state.txId
    target_alh = store.digest_from(state.txHash)
  end

  verifies = Store.verify_inclusion(inclusion_proof, kv.digest, eh)
  if !verifies
    raise VerificationError
  end
  verifies = Store.verify_dual_proof(
      dual_proof,
      source_id,
      target_id,
      source_alh,
      target_alh)
  if !verifies
    raise VerificationError
  end
  newstate = State.new(
    db: state.db,
    txId: target_id,
    txHash: target_alh,
    publicKey: ventry.verifiableTx.signature&.publicKey,
    signature: ventry.verifiableTx.signature&.signature,
  )
  if !verifying_key.nil?
    newstate.verify(verifying_key)
  end
  @rs.set(newstate)

  ventry.entry.value
end

#verified_set(key, value) ⇒ Object 



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# File 'lib/immudb/client.rb', line 79

def verified_set(key, value)
  state = @rs.get
  kv = Schema::KeyValue.new(key: key, value: value)

  raw_request = Schema::VerifiableSetRequest.new(
    setRequest: Schema::SetRequest.new(KVs: [kv]),
    proveSinceTx: state.txId
  )
  verifiable_tx = grpc.verifiable_set(raw_request)
  tx = Store.tx_from(verifiable_tx.tx)
  inclusion_proof = tx.proof(SET_KEY_PREFIX + key)
  ekv = Store.encode_kv(key, value)
  verifies = Store.verify_inclusion(inclusion_proof, ekv.digest, tx.eh)
  unless verifies
    raise VerificationError
  end
  if tx.eh != Store.digest_from(verifiable_tx.dualProof.targetTxMetadata.eH)
    raise VerificationError
  end
  if state.txId == 0
    source_id = tx.ID
    source_alh = tx.Alh
  else
    source_id = state.txId
    source_alh = Store.digest_from(state.txHash)
  end
  target_id = tx.ID
  target_alh = tx.Alh

  verifies = Store.verify_dual_proof(
    HTree.dual_proof_from(verifiable_tx.dualProof),
    source_id,
    target_id,
    source_alh,
    target_alh
  )
  if !verifies
    raise VerificationError
  end
  newstate = State.new(
    db: state.db,
    txId: target_id,
    txHash: target_alh,
    publicKey: verifiable_tx.signature&.publicKey,
    signature: verifiable_tx.signature&.signature,
  )
  if !verifying_key.nil?
    newstate.verify(verifying_key)
  end
  @rs.set(newstate)
  nil
end

#version ⇒ Object 



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# File 'lib/immudb/client.rb', line 263

def version
  grpc.health(Google::Protobuf::Empty.new).version
end