Module: Bdb
- Defined in:
- lib/bigchaindb.rb
Constant Summary collapse
- ADDRESS_REGEXP =
/\A[1-9A-Za-z]{43,45}\z/
Class Method Summary collapse
- .balance_asset(ipdb, public_key, asset_id) ⇒ Object
- .create_asset(ipdb, public_key, private_key, asset_data, amount = 1, metadata = {"x"=> "y"}) ⇒ Object
- .create_txn(owner_before, output, asset_data, metadata) ⇒ Object
- .generate_keys ⇒ Object
- .generate_output(owner_after, amount = 1) ⇒ Object
- .get_asset(txn) ⇒ Object
- .get_assets(ipdb, query) ⇒ Object
- .get_outputs_by_pubkey(ipdb, pubkey, spent = :both) ⇒ Object
- .get_transaction_by_id(ipdb, txn_id) ⇒ Object
- .get_transaction_status(ipdb, txn_id) ⇒ Object
- .get_transactions_by_asset(ipdb, asset_id) ⇒ Object
- .post_transaction(ipdb, txn) ⇒ Object
- .sign(txn, privkey) ⇒ Object
- .spend(txn, output_ids = []) ⇒ Object
- .test ⇒ Object
- .transfer_asset(ipdb, receiver_pubkeys_amounts, sender_pubkey, sender_privkey, inputs, asset_id, metadata = {"ts"=> Time.now.to_s}) ⇒ Object
- .transfer_txn(inputs, outputs, asset, metadata = nil) ⇒ Object
- .unspent_outputs(ipdb, pubkey) ⇒ Object
Class Method Details
.balance_asset(ipdb, public_key, asset_id) ⇒ Object
132 133 134 135 136 137 138 139 140 141 |
# File 'lib/bigchaindb.rb', line 132 def self.balance_asset(ipdb, public_key, asset_id) unspent = Bdb.unspent_outputs(ipdb, public_key) balance = 0 unspent.each do |u| txn = JSON.parse(Bdb.get_transaction_by_id(ipdb, u["transaction_id"]).body) next unless ((txn["operation"] == "CREATE") && (txn["id"] == asset_id)) || (txn["asset"]["id"] == asset_id) balance += txn["outputs"][u["output_index"]]["amount"].to_i end return balance end |
.create_asset(ipdb, public_key, private_key, asset_data, amount = 1, metadata = {"x"=> "y"}) ⇒ Object
143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 |
# File 'lib/bigchaindb.rb', line 143 def self.create_asset(ipdb, public_key, private_key, asset_data, amount = 1, = {"x"=> "y"}) output = Bdb.generate_output(public_key, amount) create = Bdb.create_txn(public_key, output, asset_data, ) signed_create = Bdb.sign(create, private_key) resp = post_transaction(ipdb, signed_create) if resp.code == 202 txn = JSON.parse(resp.body) puts "Transaction #{txn["id"]} posted. Now checking status..." sleep(5) status_resp = get_transaction_status(ipdb, txn["id"]) if (status_resp.code == 200) && JSON.parse(status_resp.body)["status"] == "valid" return {"create" => create, "txn" => txn} else puts "Trying again: #{status_resp.code} #{status_resp.body}" sleep(5) status_resp = get_transaction_status(ipdb, txn["id"]) if (status_resp.code == 200) && JSON.parse(status_resp.body)["status"] == "valid" return {"create" => create, "txn" => txn} else puts "Tried twice but failed. #{status_resp.code} #{status_resp.body}" return nil end end else puts "Error in create_asset: #{resp.code} #{resp.body}" return nil end end |
.create_txn(owner_before, output, asset_data, metadata) ⇒ Object
17 18 19 20 21 22 23 24 25 26 27 |
# File 'lib/bigchaindb.rb', line 17 def self.create_txn(owner_before, output, asset_data, ) # owner_before is the issuer of the asset args = [ "--asset-data", asset_data.to_json, "--metadata", .to_json, owner_before, output.to_json ] command = "bdb create #{args.shelljoin}" JSON.parse(`#{command}`) end |
.generate_keys ⇒ Object
7 8 9 10 |
# File 'lib/bigchaindb.rb', line 7 def self.generate_keys JSON.parse(`bdb generate_keys`) # {"public"=> "x", "private"=> "y"} #Base58 256-bit numbers end |
.generate_output(owner_after, amount = 1) ⇒ Object
12 13 14 15 |
# File 'lib/bigchaindb.rb', line 12 def self.generate_output(owner_after, amount = 1) # owner_after = who can consume this output? Can be a single pubkey or a m-of-n ThresholdSha256 condition JSON.parse(`bdb generate_output --amount #{[amount,owner_after].shelljoin}`) end |
.get_asset(txn) ⇒ Object
40 41 42 43 |
# File 'lib/bigchaindb.rb', line 40 def self.get_asset(txn) args = [txn.to_json] JSON.parse(`bdb get_asset #{args.shelljoin}`) end |
.get_assets(ipdb, query) ⇒ Object
246 247 248 |
# File 'lib/bigchaindb.rb', line 246 def self.get_assets(ipdb, query) HTTParty.get(ipdb["url"] + "/assets?search=#{query}") end |
.get_outputs_by_pubkey(ipdb, pubkey, spent = :both) ⇒ Object
237 238 239 240 |
# File 'lib/bigchaindb.rb', line 237 def self.get_outputs_by_pubkey(ipdb, pubkey, spent = :both) return HTTParty.get(ipdb["url"] + "/outputs?public_key=#{pubkey}") if spent == :both return HTTParty.get(ipdb["url"] + "/outputs?public_key=#{pubkey}&spent=#{spent}") # true or false end |
.get_transaction_by_id(ipdb, txn_id) ⇒ Object
229 230 231 |
# File 'lib/bigchaindb.rb', line 229 def self.get_transaction_by_id(ipdb, txn_id) HTTParty.get(ipdb["url"] + "/transactions/#{txn_id}") end |
.get_transaction_status(ipdb, txn_id) ⇒ Object
242 243 244 |
# File 'lib/bigchaindb.rb', line 242 def self.get_transaction_status(ipdb, txn_id) HTTParty.get(ipdb["url"] + "/statuses?transaction_id=#{txn_id}") end |
.get_transactions_by_asset(ipdb, asset_id) ⇒ Object
233 234 235 |
# File 'lib/bigchaindb.rb', line 233 def self.get_transactions_by_asset(ipdb, asset_id) HTTParty.get(ipdb["url"] + "/transactions?asset_id=#{asset_id}") end |
.post_transaction(ipdb, txn) ⇒ Object
225 226 227 |
# File 'lib/bigchaindb.rb', line 225 def self.post_transaction(ipdb, txn) HTTParty.post(ipdb["url"] + "/transactions/", {:body => txn.to_json, :headers => {"Content-Type" => "application/json", "app_id" => ipdb["app_id"], "app_key" => ipdb["app_key"]}}) end |
.sign(txn, privkey) ⇒ Object
45 46 47 48 |
# File 'lib/bigchaindb.rb', line 45 def self.sign(txn,privkey) args = [txn.to_json, privkey] JSON.parse(`bdb sign #{args.shelljoin}`) end |
.spend(txn, output_ids = []) ⇒ Object
50 51 52 53 54 55 56 57 58 |
# File 'lib/bigchaindb.rb', line 50 def self.spend(txn, output_ids = []) # Convert outputs in txn to signable/spendable inputs. if output_ids.any? args = [txn.to_json, output_ids.to_json] else args = [txn.to_json] end JSON.parse(`bdb spend #{args.shelljoin}`) end |
.test ⇒ Object
172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 |
# File 'lib/bigchaindb.rb', line 172 def self.test # Generate key-pairs alice = Bdb.generate_keys puts "alice = #{alice.to_json}\n\n" bob = Bdb.generate_keys puts "bob = #{bob.to_json}\n\n" # Define the metadata for an asset, null should work too asset_data = { "name" => "mycoin", "symbol" => "MC" } puts "asset = #{asset_data.to_json}\n\n" # To create a CREATE txn, we need output and asset. metadata is optional # Let's generate the output first: we'll need receiver and amount output = Bdb.generate_output(alice["public"],100) puts "output = #{output.to_json}\n\n" = {"msg" => "creating mycoin asset"} create = Bdb.create_txn(alice["public"], output, asset_data, ) puts "create = #{create.to_json}\n\n" signed_create = Bdb.sign(create, alice["private"]) puts "signed_create = #{signed_create.to_json}\n\n" # This signed CREATE txn can be sent to BigChainDB over HTTP api ipdb = { "url" => ENV["IPDB_URL"], "app_id" => ENV["IPDB_APP_ID"], "app_key" => ENV["IPDB_APP_KEY"]} resp = post_transaction(ipdb, signed_create) puts "resp = #{resp.code} #{resp.body}" # Now let's create a TRANSFER txn and transfer 10 coins to bob # we'll need: inputs, outputs, asset and metadata # asset for transfer is just { "id": "id of the create txn"} asset = { "id" => signed_create["id"]} output = Bdb.generate_output(bob["public"],10) input = Bdb.spend(create) puts "input = #{input.to_json}\n\n" transfer = Bdb.transfer_txn(input, output, asset, {"msg" => "txferring"}) puts "transfer = #{transfer.to_json}\n\n" signed_transfer = Bdb.sign(transfer, alice["private"]) puts "signed_transfer = #{signed_transfer.to_json}\n\n" # Now send this to server resp = post_transaction(ipdb, signed_transfer) puts "resp = #{resp.code} #{resp.body}" # Get all txns for this asset txns = JSON.parse(get_transactions_by_asset(root_url, asset["id"]).body) # txfr status puts get_transaction_status(ipdb, txns.first["id"]).body puts get_transaction_status(ipdb, txns.last["id"]).body end |
.transfer_asset(ipdb, receiver_pubkeys_amounts, sender_pubkey, sender_privkey, inputs, asset_id, metadata = {"ts"=> Time.now.to_s}) ⇒ Object
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 |
# File 'lib/bigchaindb.rb', line 65 def self.transfer_asset(ipdb, receiver_pubkeys_amounts, sender_pubkey, sender_privkey, inputs, asset_id, = {"ts"=> Time.now.to_s}) asset = { "id" => asset_id} new_inputs = [] input_amount = 0 if inputs.nil? || inputs.none? # ask IPDB for unspent outputs unspent = Bdb.unspent_outputs(ipdb, sender_pubkey) if unspent.none? return nil, "#{sender_pubkey} does not have any unspent outputs for asset #{asset_id}" end unspent.each do |u| txn = JSON.parse(Bdb.get_transaction_by_id(ipdb, u["transaction_id"]).body) next unless ((txn["operation"] == "CREATE") && txn["id"] == asset_id) || ((txn["operation"] == "TRANSFER") && txn["asset"]["id"] == asset_id) input_amount += txn["outputs"][u["output_index"]]["amount"].to_i new_inputs += Bdb.spend(txn, [u["output_index"]]) end else # assume that every output for sender_pubkey in given inputs is unspent and can be used as input inputs.each do |inp| input_amount += inp["outputs"].select { |o| o["condition"]["details"]["public_key"] == sender_pubkey }.inject(0) { |sum,out| sum + out["amount"].to_i } new_inputs += Bdb.spend(inp, inp["outputs"].each_with_index.select { |o,i| o["condition"]["details"]["public_key"] == sender_pubkey }.map(&:last)) end end outgoing_amount = 0 receiver_pubkeys_amounts.each do |pa| if pa[:amount] <= 0 return nil, "Invalid amount (<=0) found for #{pa[:pubkey]}" end outgoing_amount += pa[:amount] end if outgoing_amount > input_amount return nil, "input_amount #{input_amount} < outgoing_amount #{outgoing_amount}" end outputs = receiver_pubkeys_amounts.collect { |pa| Bdb.generate_output(pa[:pubkey],pa[:amount]) } if outgoing_amount < input_amount # left-over amount should be transferred back to sender outputs.push(Bdb.generate_output(sender_pubkey,input_amount - outgoing_amount)) end transfer = Bdb.transfer_txn(new_inputs, outputs, asset, ) signed_transfer = Bdb.sign(transfer, sender_privkey) resp = post_transaction(ipdb, signed_transfer) if resp.code == 202 txn = JSON.parse(resp.body) puts "Transaction #{txn["id"]} posted. Now checking status..." sleep(5) status_resp = get_transaction_status(ipdb, txn["id"]) if (status_resp.code == 200) && JSON.parse(status_resp.body)["status"] == "valid" return txn, "success" else puts "Trying again: #{status_resp.code} #{status_resp.body}" sleep(5) status_resp = get_transaction_status(ipdb, txn["id"]) if (status_resp.code == 200) && JSON.parse(status_resp.body)["status"] == "valid" return txn, "success" else return nil, "Tried twice but failed. #{status_resp.code} #{status_resp.body}" end end else return nil, "Error in transfer_asset: #{resp.code} #{resp.body}" end end |
.transfer_txn(inputs, outputs, asset, metadata = nil) ⇒ Object
29 30 31 32 33 34 35 36 37 38 |
# File 'lib/bigchaindb.rb', line 29 def self.transfer_txn(inputs, outputs, asset, = nil) args = {inputs: inputs, outputs: outputs, asset: asset, metadata: } puts "In transfer_txn, args = #{args.inspect}" if args = [inputs.to_json, outputs.to_json, asset.to_json, .to_json] else args = [inputs.to_json, outputs.to_json, asset.to_json] end JSON.parse(`bdb transfer #{args.shelljoin}`) end |
.unspent_outputs(ipdb, pubkey) ⇒ Object
60 61 62 63 |
# File 'lib/bigchaindb.rb', line 60 def self.unspent_outputs(ipdb, pubkey) resp = self.get_outputs_by_pubkey(ipdb, pubkey, spent = false) JSON.parse(resp.body) end |