[V3] Optimize the backup command (#1666)

* [V3 Core] Enhance [p]backup to exclude some files

* Backup the repo list too

* Lol Sinbad's pre-commit hook

* Add option of sending the backup to the owner via DM

* Drop an unnecessary config object in RepoManager

* Move the backup functionality in redbot-setup to the new stuff

* More work on implementation, including backing up the instance data

redbot/cogs/downloader/downloader.py

@@ -50,7 +50,7 @@ class Downloader:
         if str(self.LIB_PATH) not in syspath:
             syspath.insert(1, str(self.LIB_PATH))
 
-        self._repo_manager = RepoManager(self.conf)
+        self._repo_manager = RepoManager()
 
     async def cog_install_path(self):
         """Get the current cog install path.

redbot/cogs/downloader/repo_manager.py

@@ -496,8 +496,7 @@ class Repo(RepoJSONMixin):
 
 class RepoManager:
 
-    def __init__(self, downloader_config: Config):
-        self.downloader_config = downloader_config
+    def __init__(self):
 
         self._repos = {}
 

redbot/core/core_commands.py

@@ -2,6 +2,7 @@ import asyncio
 import datetime
 import importlib
 import itertools
+import json
 import logging
 import os
 import sys
@@ -951,7 +952,7 @@ class Core:
 
     @commands.command()
     @checks.is_owner()
-    async def backup(self, ctx):
+    async def backup(self, ctx, backup_path: str = None):
         """Creates a backup of all data for the instance."""
         from redbot.core.data_manager import basic_config, instance_name
         from redbot.core.drivers.red_json import JSON
@@ -979,14 +980,59 @@ class Core:
             instance_name, ctx.message.created_at.strftime("%Y-%m-%d %H-%M-%S")
         )
         if data_dir.exists():
-            home = data_dir.home()
-            backup_file = home / backup_filename
-            os.chdir(str(data_dir.parent))
+            if not backup_path:
+                backup_pth = data_dir.home()
+            else:
+                backup_pth = Path(backup_path)
+            backup_file = backup_pth / backup_filename
+
+            to_backup = []
+            exclusions = [
+                "__pycache__",
+                "Lavalink.jar",
+                os.path.join("Downloader", "lib"),
+                os.path.join("CogManager", "cogs"),
+                os.path.join("RepoManager", "repos"),
+            ]
+            downloader_cog = ctx.bot.get_cog("Downloader")
+            if downloader_cog and hasattr(downloader_cog, "_repo_manager"):
+                repo_output = []
+                repo_mgr = downloader_cog._repo_manager
+                for n, repo in repo_mgr._repos:
+                    repo_output.append(
+                        {{"url": repo.url, "name": repo.name, "branch": repo.branch}}
+                    )
+                repo_filename = data_dir / "cogs" / "RepoManager" / "repos.json"
+                with open(str(repo_filename), "w") as f:
+                    f.write(json.dumps(repo_output, indent=4))
+            instance_data = {instance_name: basic_config}
+            instance_file = data_dir / "instance.json"
+            with open(str(instance_file), "w") as instance_out:
+                instance_out.write(json.dumps(instance_data, indent=4))
+            for f in data_dir.glob("**/*"):
+                if not any(ex in str(f) for ex in exclusions):
+                    to_backup.append(f)
             with tarfile.open(str(backup_file), "w:gz") as tar:
-                tar.add(data_dir.stem)
+                for f in to_backup:
+                    tar.add(str(f), recursive=False)
+            print(str(backup_file))
             await ctx.send(
-                _("A backup has been made of this instance. It is at {}.").format(backup_file)
+                _("A backup has been made of this instance. It is at {}.").format((backup_file))
             )
+            await ctx.send(_("Would you like to receive a copy via DM? (y/n)"))
+
+            def same_author_check(m):
+                return m.author == ctx.author and m.channel == ctx.channel
+
+            try:
+                msg = await ctx.bot.wait_for("message", check=same_author_check, timeout=60)
+            except asyncio.TimeoutError:
+                await ctx.send(_("Ok then."))
+            else:
+                if msg.content.lower().strip() == "y":
+                    await ctx.author.send(
+                        _("Here's a copy of the backup"), file=discord.File(str(backup_file))
+                    )
         else:
             await ctx.send(_("That directory doesn't seem to exist..."))
 

redbot/setup.py

@@ -12,7 +12,12 @@ from pathlib import Path
 
 import appdirs
 from redbot.core.cli import confirm
-from redbot.core.data_manager import basic_config_default
+from redbot.core.data_manager import (
+    basic_config_default,
+    load_basic_configuration,
+    instance_name,
+    basic_config,
+)
 from redbot.core.json_io import JsonIO
 from redbot.core.utils import safe_delete
 from redbot.core.drivers.red_json import JSON
@@ -287,34 +292,46 @@ async def edit_instance():
 
 async def create_backup(selected, instance_data):
     if confirm("Would you like to make a backup of the data for this instance? (y/n)"):
+        load_basic_configuration(selected)
         if instance_data["STORAGE_TYPE"] == "MongoDB":
-            print("Backing up the instance's data...")
             await mongo_to_json(instance_data["DATA_PATH"], instance_data["STORAGE_DETAILS"])
-            backup_filename = "redv3-{}-{}.tar.gz".format(
-                selected, dt.utcnow().strftime("%Y-%m-%d %H-%M-%S")
-            )
-            pth = Path(instance_data["DATA_PATH"])
-            if pth.exists():
-                home = pth.home()
-                backup_file = home / backup_filename
-                os.chdir(str(pth.parent))
-                with tarfile.open(str(backup_file), "w:gz") as tar:
-                    tar.add(pth.stem)
-                print("A backup of {} has been made. It is at {}".format(selected, backup_file))
+        print("Backing up the instance's data...")
+        backup_filename = "redv3-{}-{}.tar.gz".format(
+            selected, dt.utcnow().strftime("%Y-%m-%d %H-%M-%S")
+        )
+        pth = Path(instance_data["DATA_PATH"])
+        if pth.exists():
+            backup_pth = pth.home()
+            backup_file = backup_pth / backup_filename
 
-        else:
-            print("Backing up the instance's data...")
-            backup_filename = "redv3-{}-{}.tar.gz".format(
-                selected, dt.utcnow().strftime("%Y-%m-%d %H-%M-%S")
-            )
-            pth = Path(instance_data["DATA_PATH"])
-            if pth.exists():
-                home = pth.home()
-                backup_file = home / backup_filename
-                os.chdir(str(pth.parent))  # str is used here because 3.5 support
-                with tarfile.open(str(backup_file), "w:gz") as tar:
-                    tar.add(pth.stem)  # add all files in that directory
-                print("A backup of {} has been made. It is at {}".format(selected, backup_file))
+            to_backup = []
+            exclusions = [
+                "__pycache__",
+                "Lavalink.jar",
+                os.path.join("Downloader", "lib"),
+                os.path.join("CogManager", "cogs"),
+                os.path.join("RepoManager", "repos"),
+            ]
+            from redbot.cogs.downloader.repo_manager import RepoManager
+
+            repo_mgr = RepoManager()
+            repo_output = []
+            for _, repo in repo_mgr._repos:
+                repo_output.append({"url": repo.url, "name": repo.name, "branch": repo.branch})
+            repo_filename = pth / "cogs" / "RepoManager" / "repos.json"
+            with open(str(repo_filename), "w") as f:
+                f.write(json.dumps(repo_output, indent=4))
+            instance_data = {instance_name: basic_config}
+            instance_file = pth / "instance.json"
+            with open(str(instance_file), "w") as instance_out:
+                instance_out.write(json.dumps(instance_data, indent=4))
+            for f in pth.glob("**/*"):
+                if not any(ex in str(f) for ex in exclusions):
+                    to_backup.append(f)
+            with tarfile.open(str(backup_file), "w:gz") as tar:
+                for f in to_backup:
+                    tar.add(str(f), recursive=False)
+            print("A backup of {} has been made. It is at {}".format(selected, backup_file))
 
 
 async def remove_instance(selected, instance_data):

tests/cogs/downloader/test_downloader.py

@@ -33,9 +33,8 @@ def patch_relative_to(monkeysession):
 
 
 @pytest.fixture
-def repo_manager(tmpdir_factory, config):
-    config.register_global(repos={})
-    rm = RepoManager(config)
+def repo_manager(tmpdir_factory):
+    rm = RepoManager()
     # rm.repos_folder = Path(str(tmpdir_factory.getbasetemp())) / 'repos'
     return rm