Upload changes limits

.github/workflows/autotests.yml

@@ -19,7 +19,7 @@ jobs:
 
       - uses: actions/setup-python@v2
         with:
-          python-version: '3.x'
+          python-version: '3.8'
 
       - name: Install python package dependencies
         run: |

mergin/client.py

@@ -1554,6 +1554,8 @@ def sync_project_generator(self, project_directory):
 
     def sync_project(self, project_directory):
         """
+        Syncs project by pulling server changes and pushing local changes. There is intorduced retry mechanism
+        for handling server conflicts (when server has changes that we do not have yet or somebody else is syncing).
         See description of _sync_project_generator().
 
         :param project_directory: Project's directory

mergin/client_push.py

@@ -22,9 +22,16 @@
 import time
 from typing import List, Tuple, Optional, ByteString
 
-from .local_changes import FileChange, LocalProjectChanges
-
-from .common import UPLOAD_CHUNK_ATTEMPT_WAIT, UPLOAD_CHUNK_ATTEMPTS, UPLOAD_CHUNK_SIZE, ClientError, ErrorCode
+from .local_changes import ChangesValidationError, FileChange, LocalProjectChanges
+
+from .common import (
+    MAX_UPLOAD_VERSIONED_SIZE,
+    UPLOAD_CHUNK_ATTEMPT_WAIT,
+    UPLOAD_CHUNK_ATTEMPTS,
+    UPLOAD_CHUNK_SIZE,
+    MAX_UPLOAD_MEDIA_SIZE,
+    ClientError,
+)
 from .merginproject import MerginProject
 from .editor import filter_changes
 from .utils import get_data_checksum
@@ -176,7 +183,7 @@ def start(self, items: List[UploadQueueItem]):
 
     def update_chunks_from_items(self):
         """
-        Update chunks in LocalChanges from the upload queue items.
+        Update chunks in LocalProjectChanges from the upload queue items.
         Used just before finalizing the transaction to set the server_chunk_id in v2 API.
         """
         self.changes.update_chunk_ids([(item.chunk_id, item.server_chunk_id) for item in self.upload_queue_items])
@@ -301,28 +308,23 @@ def push_project_async(mc, directory) -> Optional[UploadJob]:
         mp.log.info(f"--- push {project_path} - nothing to do")
         return
 
-    mp.log.debug("push changes:\n" + pprint.pformat(changes))
+    mp.log.debug("push changes:\n" + pprint.pformat(asdict(changes)))
     tmp_dir = tempfile.TemporaryDirectory(prefix="python-api-client-")
 
     # If there are any versioned files (aka .gpkg) that are not updated through a diff,
     # we need to make a temporary copy somewhere to be sure that we are uploading full content.
     # That's because if there are pending transactions, checkpointing or switching from WAL mode
     # won't work, and we would end up with some changes left in -wal file which do not get
     # uploaded. The temporary copy using geodiff uses sqlite backup API and should copy everything.
-    for f in changes["updated"]:
-        if mp.is_versioned_file(f["path"]) and "diff" not in f:
+    for f in changes.updated:
+        if mp.is_versioned_file(f.path) and not f.diff:
             mp.copy_versioned_file_for_upload(f, tmp_dir.name)
 
-    for f in changes["added"]:
-        if mp.is_versioned_file(f["path"]):
+    for f in changes.added:
+        if mp.is_versioned_file(f.path):
             mp.copy_versioned_file_for_upload(f, tmp_dir.name)
 
-    local_changes = LocalProjectChanges(
-        added=[FileChange(**change) for change in changes["added"]],
-        updated=[FileChange(**change) for change in changes["updated"]],
-        removed=[FileChange(**change) for change in changes["removed"]],
-    )
-    job = create_upload_job(mc, mp, local_changes, tmp_dir)
+    job = create_upload_job(mc, mp, changes, tmp_dir)
     return job
 
 
@@ -477,12 +479,22 @@ def remove_diff_files(job: UploadJob) -> None:
                 os.remove(diff_file)
 
 
-def get_push_changes_batch(mc, mp: MerginProject) -> Tuple[dict, int]:
+def get_push_changes_batch(mc, mp: MerginProject) -> Tuple[LocalProjectChanges, int]:
     """
     Get changes that need to be pushed to the server.
     """
     changes = mp.get_push_changes()
     project_role = mp.project_role()
     changes = filter_changes(mc, project_role, changes)
 
-    return changes, sum(len(v) for v in changes.values())
+    try:
+        local_changes = LocalProjectChanges(
+            added=[FileChange(**change) for change in changes["added"]],
+            updated=[FileChange(**change) for change in changes["updated"]],
+            removed=[FileChange(**change) for change in changes["removed"]],
+        )
+    except ChangesValidationError as e:
+        raise ClientError(
+            f"Some files exceeded maximum upload size. Files: {', '.join([c.path for c in e.invalid_changes])}. Maximum size for media files is {MAX_UPLOAD_MEDIA_SIZE / (1024**3)} GB and for geopackage files {MAX_UPLOAD_VERSIONED_SIZE / (1024**3)} GB."
+        )
+    return local_changes, sum(len(v) for v in changes.values())

mergin/common.py

@@ -24,6 +24,12 @@
 # seconds to wait between sync callback calls
 SYNC_CALLBACK_WAIT = 0.01
 
+# maximum size of media file able to upload in one push (in bytes)
+MAX_UPLOAD_MEDIA_SIZE = 10 * (1024**3)
+
+# maximum size of GPKG file able to upload in one push (in bytes)
+MAX_UPLOAD_VERSIONED_SIZE = 5 * (1024**3)
+
 # default URL for submitting logs
 MERGIN_DEFAULT_LOGS_URL = "https://g4pfq226j0.execute-api.eu-west-1.amazonaws.com/mergin_client_log_submit"
 

mergin/editor.py

@@ -1,7 +1,7 @@
 from itertools import filterfalse
 from typing import Callable, Dict, List
 
-from .utils import is_mergin_config, is_qgis_file, is_versioned_file
+from .utils import is_qgis_file
 
 EDITOR_ROLE_NAME = "editor"
 

mergin/local_changes.py

@@ -2,6 +2,18 @@
 from datetime import datetime
 from typing import Optional, List, Tuple
 
+from .utils import is_versioned_file
+from .common import MAX_UPLOAD_MEDIA_SIZE, MAX_UPLOAD_VERSIONED_SIZE
+
+MAX_UPLOAD_CHANGES = 100
+
+
+# The custom exception
+class ChangesValidationError(Exception):
+    def __init__(self, message, invalid_changes=[]):
+        super().__init__(message)
+        self.invalid_changes = invalid_changes if invalid_changes is not None else []
+
 
 @dataclass
 class FileDiffChange:
@@ -68,6 +80,29 @@ class LocalProjectChanges:
     updated: List[FileChange] = field(default_factory=list)
     removed: List[FileChange] = field(default_factory=list)
 
+    def __post_init__(self):
+        """
+        Enforce a limit of changes combined from `added` and `updated`.
+        """
+        upload_changes = self.get_upload_changes()
+        total_changes = len(upload_changes)
+        oversize_changes = []
+        for change in upload_changes:
+            if not is_versioned_file(change.path) and change.size > MAX_UPLOAD_MEDIA_SIZE:
+                oversize_changes.append(change)
+            elif not change.diff and change.size > MAX_UPLOAD_VERSIONED_SIZE:
+                oversize_changes.append(change)
+        if oversize_changes:
+            error = ChangesValidationError("Some files exceed the maximum upload size", oversize_changes)
+            raise error
+
+        if total_changes > MAX_UPLOAD_CHANGES:
+            # Calculate how many changes to keep from `added` and `updated`
+            added_limit = min(len(self.added), MAX_UPLOAD_CHANGES)
+            updated_limit = MAX_UPLOAD_CHANGES - added_limit
+            self.added = self.added[:added_limit]
+            self.updated = self.updated[:updated_limit]
+
     def to_server_payload(self) -> dict:
         return {
             "added": [change.to_server_data() for change in self.added],

mergin/merginproject.py

@@ -21,7 +21,7 @@
     conflicted_copy_file_name,
     edit_conflict_file_name,
 )
-
+from .local_changes import FileChange
 
 this_dir = os.path.dirname(os.path.realpath(__file__))
 
@@ -470,20 +470,20 @@ def get_push_changes(self):
         changes["updated"] = [f for f in changes["updated"] if f not in not_updated]
         return changes
 
-    def copy_versioned_file_for_upload(self, f, tmp_dir):
+    def copy_versioned_file_for_upload(self, f: FileChange, tmp_dir: str) -> str:
         """
         Make a temporary copy of the versioned file using geodiff, to make sure that we have full
         content in a single file (nothing left in WAL journal)
         """
-        path = f["path"]
+        path = f.path
         self.log.info("Making a temporary copy (full upload): " + path)
         tmp_file = os.path.join(tmp_dir, path)
         os.makedirs(os.path.dirname(tmp_file), exist_ok=True)
         self.geodiff.make_copy_sqlite(self.fpath(path), tmp_file)
-        f["size"] = os.path.getsize(tmp_file)
-        f["checksum"] = generate_checksum(tmp_file)
-        f["chunks"] = [str(uuid.uuid4()) for i in range(math.ceil(f["size"] / UPLOAD_CHUNK_SIZE))]
-        f["upload_file"] = tmp_file
+        f.size = os.path.getsize(tmp_file)
+        f.checksum = generate_checksum(tmp_file)
+        f.chunks = [str(uuid.uuid4()) for i in range(math.ceil(f.size / UPLOAD_CHUNK_SIZE))]
+        f.upload_file = tmp_file
         return tmp_file
 
     def get_list_of_push_changes(self, push_changes):

mergin/test/test_client.py

@@ -2328,8 +2328,10 @@ def test_clean_diff_files(mc):
     shutil.copy(mp.fpath("inserted_1_A.gpkg"), mp.fpath(f_updated))
     mc.push_project(project_dir)
 
-    diff_files = glob.glob("*-diff-*", root_dir=os.path.split(mp.fpath_meta("inserted_1_A.gpkg"))[0])
+    directory = os.path.split(mp.fpath_meta("inserted_1_A.gpkg"))[0]
+    diff_files = [f for f in os.listdir(directory) if "-diff-" in f]
 
+    # Assert that no matching files are found
     assert diff_files == []
 
 
@@ -3214,3 +3216,22 @@ def test_client_project_sync_retry(mc):
         with pytest.raises(ClientError):
             mc.sync_project(project_dir)
     assert mock_push_project_async.call_count == 2
+
+
+def test_push_file_limits(mc):
+    test_project = "test_push_file_limits"
+    project = API_USER + "/" + test_project
+    project_dir = os.path.join(TMP_DIR, test_project)
+    cleanup(mc, project, [project_dir])
+    mc.create_project(test_project)
+    mc.download_project(project, project_dir)
+    shutil.copy(os.path.join(TEST_DATA_DIR, "base.gpkg"), project_dir)
+    # setting to some minimal value to mock limit hit
+    with patch("mergin.local_changes.MAX_UPLOAD_VERSIONED_SIZE", 1):
+        with pytest.raises(ClientError, match=f"Some files exceeded maximum upload size. Files: base.gpkg."):
+            mc.push_project(project_dir)
+
+    shutil.copy(os.path.join(TEST_DATA_DIR, "test.txt"), project_dir)
+    with patch("mergin.local_changes.MAX_UPLOAD_MEDIA_SIZE", 1):
+        with pytest.raises(ClientError, match=f"Some files exceeded maximum upload size. Files: test.txt."):
+            mc.push_project(project_dir)

mergin/test/test_local_changes.py

@@ -1,6 +1,8 @@
 from datetime import datetime
+import pytest
+from unittest.mock import patch
 
-from ..local_changes import FileChange, LocalProjectChanges
+from ..local_changes import ChangesValidationError, FileChange, LocalProjectChanges, MAX_UPLOAD_CHANGES
 
 
 def test_local_changes_from_dict():
@@ -118,3 +120,93 @@ def test_local_changes_get_upload_changes():
     assert len(upload_changes) == 2  # Only added and updated should be included
     assert upload_changes[0].path == "file1.txt"  # First change is from added
     assert upload_changes[1].path == "file2.txt"  # Second change is from updated
+
+
+def test_local_changes_post_init_validation_media():
+    """Test the get_media_upload_file method of LocalProjectChanges."""
+    # Define constants
+    SIZE_LIMIT_MB = 5
+    SIZE_LIMIT_BYTES = SIZE_LIMIT_MB * 1024 * 1024
+    SMALL_FILE_SIZE = 1024
+    LARGE_FILE_SIZE = 15 * 1024 * 1024
+
+    # Create sample LocalChange instances
+    added = [
+        FileChange(path="file1.txt", checksum="abc123", size=SMALL_FILE_SIZE, mtime=datetime.now()),
+        FileChange(path="file2.jpg", checksum="xyz789", size=LARGE_FILE_SIZE, mtime=datetime.now()),  # Over limit
+    ]
+    updated = [
+        FileChange(path="file3.mp4", checksum="lmn456", size=5 * 1024 * 1024, mtime=datetime.now()),
+        FileChange(path="file4.gpkg", checksum="opq123", size=SMALL_FILE_SIZE, mtime=datetime.now()),
+    ]
+
+    # Initialize LocalProjectChanges
+    with patch("mergin.local_changes.MAX_UPLOAD_MEDIA_SIZE", SIZE_LIMIT_BYTES):
+        with pytest.raises(ChangesValidationError, match="Some files exceed") as err:
+            LocalProjectChanges(added=added, updated=updated)
+            print(err.value.invalid_changes)
+    assert len(err.value.invalid_changes) == 1
+    assert "file2.jpg" == err.value.invalid_changes[0].path
+    assert err.value.invalid_changes[0].size == LARGE_FILE_SIZE
+
+
+def test_local_changes_post_init_validation_gpgkg():
+    """Test the get_gpgk_upload_file method of LocalProjectChanges."""
+    # Define constants
+    SIZE_LIMIT_MB = 10
+    SIZE_LIMIT_BYTES = SIZE_LIMIT_MB * 1024 * 1024
+    SMALL_FILE_SIZE = 1024
+    LARGE_FILE_SIZE = 15 * 1024 * 1024
+
+    # Create sample LocalChange instances
+    added = [
+        FileChange(path="file1.gpkg", checksum="abc123", size=SMALL_FILE_SIZE, mtime=datetime.now()),
+        FileChange(
+            path="file2.gpkg", checksum="xyz789", size=LARGE_FILE_SIZE, mtime=datetime.now(), diff=None
+        ),  # Over limit
+    ]
+    updated = [
+        FileChange(
+            path="file3.gpkg",
+            checksum="lmn456",
+            size=SIZE_LIMIT_BYTES + 1,
+            mtime=datetime.now(),
+            diff={"path": "file3-diff.gpkg", "checksum": "diff123", "size": 1024, "mtime": datetime.now()},
+        ),
+        FileChange(path="file4.txt", checksum="opq123", size=SMALL_FILE_SIZE, mtime=datetime.now()),
+    ]
+
+    # Initialize LocalProjectChanges
+    with patch("mergin.local_changes.MAX_UPLOAD_VERSIONED_SIZE", SIZE_LIMIT_BYTES):
+        with pytest.raises(ChangesValidationError) as err:
+            LocalProjectChanges(added=added, updated=updated)
+    assert len(err.value.invalid_changes) == 1
+    assert "file2.gpkg" == err.value.invalid_changes[0].path
+    assert err.value.invalid_changes[0].size == LARGE_FILE_SIZE
+
+
+def test_local_changes_post_init():
+    """Test the __post_init__ method of LocalProjectChanges."""
+    # Define constants
+    ADDED_COUNT = 80
+    UPDATED_COUNT = 21
+    SMALL_FILE_SIZE = 1024
+    LARGE_FILE_SIZE = 2048
+
+    # Create more than MAX_UPLOAD_CHANGES changes
+    added = [
+        FileChange(path=f"file{i}.txt", checksum="abc123", size=SMALL_FILE_SIZE, mtime=datetime.now())
+        for i in range(ADDED_COUNT)
+    ]
+    updated = [
+        FileChange(path=f"file{i}.txt", checksum="xyz789", size=LARGE_FILE_SIZE, mtime=datetime.now())
+        for i in range(UPDATED_COUNT)
+    ]
+
+    # Initialize LocalProjectChanges
+    local_changes = LocalProjectChanges(added=added, updated=updated)
+
+    # Assertions
+    assert len(local_changes.added) == ADDED_COUNT  # All added changes are included
+    assert len(local_changes.updated) == MAX_UPLOAD_CHANGES - ADDED_COUNT  # Only enough updated changes are included
+    assert len(local_changes.added) + len(local_changes.updated) == MAX_UPLOAD_CHANGES  # Total is limited