validator/pow: restored mising monero gen wide data script

script/monero_gen_wide_data.py

@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+# Copyright (c) 2014-2023, The Monero Project
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other
+#    materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be
+#    used to endorse or promote products derived from this software without specific
+#    prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+# THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
+import random
+
+DIFFICULTY_TARGET = 120
+DIFFICULTY_WINDOW = 720
+DIFFICULTY_LAG = 15
+DIFFICULTY_CUT = 60
+
+def difficulty():
+    times = []
+    diffs = []
+    while True:
+        if len(times) <= 1:
+            diff = 1
+        else:
+            begin = max(len(times) - DIFFICULTY_WINDOW - DIFFICULTY_LAG, 0)
+            end = min(begin + DIFFICULTY_WINDOW, len(times))
+            length = end - begin
+            assert length >= 2
+            if length <= DIFFICULTY_WINDOW - 2 * DIFFICULTY_CUT:
+                cut_begin = 0
+                cut_end = length
+            else:
+                excess = length - (DIFFICULTY_WINDOW - 2 * DIFFICULTY_CUT)
+                cut_begin = (excess + 1) // 2
+                cut_end = length - excess // 2
+            assert cut_begin + 2 <= cut_end
+            wnd = times[begin:end]
+            wnd.sort()
+            dtime = wnd[cut_end - 1] - wnd[cut_begin]
+            dtime = max(dtime, 1)
+            ddiff = sum(diffs[begin + cut_begin + 1:begin + cut_end])
+            diff = (ddiff * DIFFICULTY_TARGET + dtime - 1) // dtime
+        times.append((yield diff))
+        diffs.append(diff)
+
+
+random.seed(1)
+time = 1000
+gen = difficulty()
+diff = next(gen)
+for i in range(100000):
+    power = 100 if i < 10000 else 100000000 if i < 500 else 1000000000000 if i < 1000 else 1000000000000000 if i < 2000 else 10000000000000000000 if i < 4000 else 1000000000000000000000000
+    time += random.randint(-diff // power - 10, 3 * diff // power + 10)
+    print(time, diff)
+    diff = gen.send(time)

src/validator/pow.rs

@@ -689,7 +689,7 @@ mod tests {
 
         let mut module = PoWModule::new(blockchain, DEFAULT_TEST_DIFFICULTY_TARGET, None, None)?;
 
-        let output = Command::new("./script/research/pow/gen_wide_data.py").output().unwrap();
+        let output = Command::new("./script/monero_gen_wide_data.py").output().unwrap();
         let reader = Cursor::new(output.stdout);
 
         let mut previous = genesis_block.header;