exchange/src/auditordb/auditor-0001.sql

--
-- This file is part of TALER
-- Copyright (C) 2014--2020 Taler Systems SA
--
-- TALER is free software; you can redistribute it and/or modify it under the
-- terms of the GNU General Public License as published by the Free Software
-- Foundation; either version 3, or (at your option) any later version.
--
-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License along with
-- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
--

-- Everything in one big transaction
BEGIN;

-- Check patch versioning is in place.
SELECT _v.register_patch('auditor-0001', NULL, NULL);


CREATE TABLE IF NOT EXISTS auditor_exchanges
  (master_pub BYTEA PRIMARY KEY CHECK (LENGTH(master_pub)=32)
  ,exchange_url VARCHAR NOT NULL
  );
COMMENT ON TABLE auditor_exchanges
  IS 'list of the exchanges we are auditing';


CREATE TABLE IF NOT EXISTS auditor_exchange_signkeys
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,ep_start INT8 NOT NULL
  ,ep_expire INT8 NOT NULL
  ,ep_end INT8 NOT NULL
  ,exchange_pub BYTEA NOT NULL CHECK (LENGTH(exchange_pub)=32)
  ,master_sig BYTEA NOT NULL CHECK (LENGTH(master_sig)=64)
  );
COMMENT ON TABLE auditor_exchange_signkeys
  IS 'list of the online signing keys of exchanges we are auditing';


CREATE TABLE IF NOT EXISTS auditor_denominations
  (denom_pub_hash BYTEA PRIMARY KEY CHECK (LENGTH(denom_pub_hash)=64)
  ,master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,valid_from INT8 NOT NULL
  ,expire_withdraw INT8 NOT NULL
  ,expire_deposit INT8 NOT NULL
  ,expire_legal INT8 NOT NULL
  ,coin_val INT8 NOT NULL
  ,coin_frac INT4 NOT NULL
  ,fee_withdraw_val INT8 NOT NULL
  ,fee_withdraw_frac INT4 NOT NULL
  ,fee_deposit_val INT8 NOT NULL
  ,fee_deposit_frac INT4 NOT NULL
  ,fee_refresh_val INT8 NOT NULL
  ,fee_refresh_frac INT4 NOT NULL
  ,fee_refund_val INT8 NOT NULL
  ,fee_refund_frac INT4 NOT NULL
  );
COMMENT ON TABLE auditor_denominations
  IS 'denomination keys the auditor is aware of';


CREATE TABLE IF NOT EXISTS auditor_progress_reserve
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,last_reserve_in_serial_id INT8 NOT NULL DEFAULT 0
  ,last_reserve_out_serial_id INT8 NOT NULL DEFAULT 0
  ,last_reserve_recoup_serial_id INT8 NOT NULL DEFAULT 0
  ,last_reserve_close_serial_id INT8 NOT NULL DEFAULT 0
  ,PRIMARY KEY (master_pub)
  );
COMMENT ON TABLE auditor_progress_reserve
  IS 'information as to which transactions the auditor has processed in the exchange database.  Used for SELECTing the
 statements to process.  The indices include the last serial ID from the respective tables that we have processed. Thus, we need to select those table entries that are strictly larger (and process in monotonically increasing order).';


CREATE TABLE IF NOT EXISTS auditor_progress_aggregation
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,last_wire_out_serial_id INT8 NOT NULL DEFAULT 0
  ,PRIMARY KEY (master_pub)
  );
COMMENT ON TABLE auditor_progress_aggregation
  IS 'information as to which transactions the auditor has processed in the exchange database.  Used for SELECTing the
 statements to process.  The indices include the last serial ID from the respective tables that we have processed. Thus, we need to select those table entries that are strictly larger (and process in monotonically increasing order).';


CREATE TABLE IF NOT EXISTS auditor_progress_deposit_confirmation
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,last_deposit_confirmation_serial_id INT8 NOT NULL DEFAULT 0
  ,PRIMARY KEY (master_pub)
  );
COMMENT ON TABLE auditor_progress_deposit_confirmation
  IS 'information as to which transactions the auditor has processed in the exchange database.  Used for SELECTing the
 statements to process.  The indices include the last serial ID from the respective tables that we have processed. Thus, we need to select those table entries that are strictly larger (and process in monotonically increasing order).';


CREATE TABLE IF NOT EXISTS auditor_progress_coin
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,last_withdraw_serial_id INT8 NOT NULL DEFAULT 0
  ,last_deposit_serial_id INT8 NOT NULL DEFAULT 0
  ,last_melt_serial_id INT8 NOT NULL DEFAULT 0
  ,last_refund_serial_id INT8 NOT NULL DEFAULT 0
  ,last_recoup_serial_id INT8 NOT NULL DEFAULT 0
  ,last_recoup_refresh_serial_id INT8 NOT NULL DEFAULT 0
  ,PRIMARY KEY (master_pub)
  );
COMMENT ON TABLE auditor_progress_coin
  IS 'information as to which transactions the auditor has processed in the exchange database.  Used for SELECTing the
 statements to process.  The indices include the last serial ID from the respective tables that we have processed. Thus, we need to select those table entries that are strictly larger (and process in monotonically increasing order).';


CREATE TABLE IF NOT EXISTS wire_auditor_account_progress
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,account_name TEXT NOT NULL
  ,last_wire_reserve_in_serial_id INT8 NOT NULL DEFAULT 0
  ,last_wire_wire_out_serial_id INT8 NOT NULL DEFAULT 0
  ,wire_in_off INT8
  ,wire_out_off INT8
  ,PRIMARY KEY (master_pub,account_name)
  );
COMMENT ON TABLE wire_auditor_account_progress
  IS 'information as to which transactions the auditor has processed in the exchange database.  Used for SELECTing the
 statements to process.  The indices include the last serial ID from the respective tables that we have processed. Thus, we need to select those table entries that are strictly larger (and process in monotonically increasing order).';


CREATE TABLE IF NOT EXISTS wire_auditor_progress
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,last_timestamp INT8 NOT NULL
  ,last_reserve_close_uuid INT8 NOT NULL
  ,PRIMARY KEY (master_pub)
  );


CREATE TABLE IF NOT EXISTS auditor_reserves
  (reserve_pub BYTEA NOT NULL CHECK(LENGTH(reserve_pub)=32)
  ,master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,reserve_balance_val INT8 NOT NULL
  ,reserve_balance_frac INT4 NOT NULL
  ,withdraw_fee_balance_val INT8 NOT NULL
  ,withdraw_fee_balance_frac INT4 NOT NULL
  ,expiration_date INT8 NOT NULL
  ,auditor_reserves_rowid BIGSERIAL UNIQUE
  ,origin_account TEXT
  );
COMMENT ON TABLE auditor_reserves
  IS 'all of the customer reserves and their respective balances that the auditor is aware of';

CREATE INDEX IF NOT EXISTS auditor_reserves_by_reserve_pub
  ON auditor_reserves
  (reserve_pub);


CREATE TABLE IF NOT EXISTS auditor_reserve_balance
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,reserve_balance_val INT8 NOT NULL
  ,reserve_balance_frac INT4 NOT NULL
  ,withdraw_fee_balance_val INT8 NOT NULL
  ,withdraw_fee_balance_frac INT4 NOT NULL
  );
COMMENT ON TABLE auditor_reserve_balance
  IS 'sum of the balances of all customer reserves (by exchange master public key)';


CREATE TABLE IF NOT EXISTS auditor_wire_fee_balance
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,wire_fee_balance_val INT8 NOT NULL
  ,wire_fee_balance_frac INT4 NOT NULL
  );
COMMENT ON TABLE auditor_wire_fee_balance
  IS 'sum of the balances of all wire fees (by exchange master public key)';


CREATE TABLE IF NOT EXISTS auditor_denomination_pending
  (denom_pub_hash BYTEA PRIMARY KEY REFERENCES auditor_denominations (denom_pub_hash) ON DELETE CASCADE
  ,denom_balance_val INT8 NOT NULL
  ,denom_balance_frac INT4 NOT NULL
  ,denom_loss_val INT8 NOT NULL
  ,denom_loss_frac INT4 NOT NULL
  ,num_issued INT8 NOT NULL
  ,denom_risk_val INT8 NOT NULL
  ,denom_risk_frac INT4 NOT NULL
  ,recoup_loss_val INT8 NOT NULL
  ,recoup_loss_frac INT4 NOT NULL
  );
COMMENT ON TABLE auditor_denomination_pending
  IS 'outstanding denomination coins that the exchange is aware of and what the respective balances are (outstanding as well as issued overall which implies the maximum value at risk).';
COMMENT ON COLUMN auditor_denomination_pending.num_issued
  IS 'counts the number of coins issued (withdraw, refresh) of this denomination';
COMMENT ON COLUMN auditor_denomination_pending.denom_risk_val
  IS 'amount that could theoretically be lost in the future due to recoup operations';
COMMENT ON COLUMN auditor_denomination_pending.recoup_loss_val
  IS 'amount actually lost due to recoup operations past revocation';


CREATE TABLE IF NOT EXISTS auditor_balance_summary
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,denom_balance_val INT8 NOT NULL
  ,denom_balance_frac INT4 NOT NULL
  ,deposit_fee_balance_val INT8 NOT NULL
  ,deposit_fee_balance_frac INT4 NOT NULL
  ,melt_fee_balance_val INT8 NOT NULL
  ,melt_fee_balance_frac INT4 NOT NULL
  ,refund_fee_balance_val INT8 NOT NULL
  ,refund_fee_balance_frac INT4 NOT NULL
  ,risk_val INT8 NOT NULL
  ,risk_frac INT4 NOT NULL
  ,loss_val INT8 NOT NULL
  ,loss_frac INT4 NOT NULL
  ,irregular_recoup_val INT8 NOT NULL
  ,irregular_recoup_frac INT4 NOT NULL
  );
COMMENT ON TABLE auditor_balance_summary
  IS 'the sum of the outstanding coins from auditor_denomination_pending (denom_pubs must belong to the respectives exchange master public key); it represents the auditor_balance_summary of the exchange at this point (modulo unexpected historic_loss-style events where denomination keys are compromised)';


CREATE TABLE IF NOT EXISTS auditor_historic_denomination_revenue
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,denom_pub_hash BYTEA PRIMARY KEY CHECK (LENGTH(denom_pub_hash)=64)
  ,revenue_timestamp INT8 NOT NULL
  ,revenue_balance_val INT8 NOT NULL
  ,revenue_balance_frac INT4 NOT NULL
  ,loss_balance_val INT8 NOT NULL
  ,loss_balance_frac INT4 NOT NULL
  );
COMMENT ON TABLE auditor_historic_denomination_revenue
  IS 'Table with historic profits; basically, when a denom_pub has expired and everything associated with it is garbage collected, the final profits end up in here; note that the denom_pub here is not a foreign key, we just keep it as a reference point.';
COMMENT ON COLUMN auditor_historic_denomination_revenue.revenue_balance_val
  IS 'the sum of all of the profits we made on the coin except for withdraw fees (which are in historic_reserve_revenue); so this includes the deposit, melt and refund fees';


CREATE TABLE IF NOT EXISTS auditor_historic_reserve_summary
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,start_date INT8 NOT NULL
  ,end_date INT8 NOT NULL
  ,reserve_profits_val INT8 NOT NULL
  ,reserve_profits_frac INT4 NOT NULL
  );
COMMENT ON TABLE auditor_historic_reserve_summary
  IS 'historic profits from reserves; we eventually GC auditor_historic_reserve_revenue, and then store the totals in here (by time intervals).';

CREATE INDEX IF NOT EXISTS auditor_historic_reserve_summary_by_master_pub_start_date
  ON auditor_historic_reserve_summary
  (master_pub
  ,start_date);


CREATE TABLE IF NOT EXISTS deposit_confirmations
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,serial_id BIGSERIAL UNIQUE
  ,h_contract_terms BYTEA CHECK (LENGTH(h_contract_terms)=64)
  ,h_wire BYTEA CHECK (LENGTH(h_wire)=64)
  ,exchange_timestamp INT8 NOT NULL
  ,refund_deadline INT8 NOT NULL
  ,amount_without_fee_val INT8 NOT NULL
  ,amount_without_fee_frac INT4 NOT NULL
  ,coin_pub BYTEA CHECK (LENGTH(coin_pub)=32)
  ,merchant_pub BYTEA CHECK (LENGTH(merchant_pub)=32)
  ,exchange_sig BYTEA CHECK (LENGTH(exchange_sig)=64)
  ,exchange_pub BYTEA CHECK (LENGTH(exchange_pub)=32)
  ,master_sig BYTEA CHECK (LENGTH(master_sig)=64)
  ,PRIMARY KEY (h_contract_terms,h_wire,coin_pub,merchant_pub,exchange_sig,exchange_pub,master_sig)
  );
COMMENT ON TABLE deposit_confirmations
  IS 'deposit confirmation sent to us by merchants; we must check that the exchange reported these properly.';


CREATE TABLE IF NOT EXISTS auditor_predicted_result
  (master_pub BYTEA CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
  ,balance_val INT8 NOT NULL
  ,balance_frac INT4 NOT NULL
  );
COMMENT ON TABLE auditor_predicted_result
  IS 'Table with the sum of the ledger, auditor_historic_revenue and the auditor_reserve_balance.  This is the final amount that the exchange should have in its bank account right now.';


-- Finally, commit everything
COMMIT;