Added osu file scraper

config.json

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+{
+    "sql": {
+        "host": "127.0.0.1",
+        "user": "root",
+        "passwd": "toor",
+        "db": "osu-wayback"
+    },
+    "scrape": {
+        "delay": 1,
+        "max_attempts": 3,
+        "increase_delay_on_fail": true
+    }
+}

memory.json

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+{"scrape": {"last": 0, "failed": []}}

scrape.py

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+#Used for scraping osu files from osu.ppy.sh and storing them into self database
+
+import urllib.request, json
+import MySQLdb
+import MySQLdb.cursors
+import time
+import atexit
+
+finished = False
+
+with open("config.json", "r") as f:
+    config = json.load(f)
+
+with open("memory.json", "r") as f:
+    memory = json.load(f)
+
+sql = MySQLdb.connect(**config["sql"], cursorclass = MySQLdb.cursors.DictCursor)
+
+cur = sql.cursor()
+
+def on_close():
+    with open("memory.json", "w") as f:
+        json.dump(memory, f)
+    print("Closing...")
+
+atexit.register(on_close)
+
+failed_streak = 0
+
+while not finished:
+    target = memory["scrape"]["last"] + 1
+    attempts = 0
+    completed = False
+    extra_sleep = 0
+    while attempts < config["scrape"]["max_attempts"] and not completed:
+        try:
+            with urllib.request.urlopen("https://osu.ppy.sh/web/check-updates.php?action=path&stream=stable&target={}".format(target)) as url:
+                data = json.loads(url.read().decode())[0]
+                if "url_patch" not in data.keys():
+                    data["url_patch"] = None
+                cur.execute("INSERT INTO updates (file_version,filename,file_hash,filesize,timestamp,patch_id,url_full,url_patch) VALUES (%s,%s,%s,%s,%s,%s,%s,%s)",
+                    [
+                        data["file_version"],
+                        data["filename"],
+                        data["file_hash"],
+                        data["filesize"],
+                        data["timestamp"],
+                        data["patch_id"],
+                        data["url_full"],
+                        data["url_patch"]
+                    ]
+                )
+                completed = True
+                failed_streak = 0
+                print("target: {}, status: OK".format(target))
+        except:
+            if target not in memory["scrape"]["failed"]:
+                memory["scrape"]["failed"].append(target)
+            attempts += 1
+            failed_streak += 1
+            if config["scrape"]["increase_delay_on_fail"]:
+                extra_sleep = attempts
+            print("target: {}, status: FAILED, attempt: {}".format(target, attempts))
+        time.sleep(config["scrape"]["delay"] + extra_sleep)
+        if failed_streak > 10:
+            exit()
+    memory["scrape"]["last"] = target

updates.sql

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+CREATE TABLE `updates` (
+  `file_version` int(11) NOT NULL,
+  `filename` varchar(32) NOT NULL,
+  `file_hash` varchar(32) NOT NULL,
+  `filesize` int(11) NOT NULL,
+  `timestamp` datetime NOT NULL,
+  `patch_id` int(11) DEFAULT NULL,
+  `url_full` varchar(128) NOT NULL,
+  `url_patch` varchar(128) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+
+ALTER TABLE `updates`
+  ADD PRIMARY KEY (`file_version`);