storing contents into catalogue db

alembic/versions/59fa8a6b0a81_contents_added_to_structure.py

@@ -0,0 +1,68 @@
+"""contents added to structure.
+
+Revision ID: 59fa8a6b0a81
+Revises: 18ba95eb351a
+Create Date: 2024-09-02 11:34:57.475654
+
+"""
+
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql as dialect_postgresql
+
+import alembic
+
+# revision identifiers, used by Alembic.
+revision = "59fa8a6b0a81"
+down_revision = "18ba95eb351a"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    alembic.op.create_table(
+        "contents",
+        sa.Column("content_id", sa.Integer, primary_key=True),
+        sa.Column("content_uid", sa.String, index=True, unique=True, nullable=False),
+        sa.Column("content_update", sa.TIMESTAMP, nullable=False),
+        sa.Column("data", dialect_postgresql.JSONB),
+        sa.Column("description", sa.String, nullable=False),
+        sa.Column("image", sa.String),
+        sa.Column("layout", sa.String),
+        sa.Column("link", sa.String),
+        sa.Column("publication_date", sa.TIMESTAMP, nullable=False),
+        sa.Column("site", sa.String, index=True, nullable=False),
+        sa.Column("title", sa.String, nullable=False),
+        sa.Column("type", sa.String, nullable=False),
+    )
+    alembic.op.create_table(
+        "content_keywords",
+        sa.Column("keyword_id", sa.Integer, primary_key=True),
+        sa.Column("category_name", sa.String),
+        sa.Column("category_value", sa.String),
+        sa.Column("keyword_name", sa.String),
+    )
+    alembic.op.create_table(
+        "contents_keywords_m2m",
+        sa.Column(
+            "content_id",
+            sa.Integer,
+            sa.ForeignKey("contents.content_id"),
+            primary_key=True,
+        ),
+        sa.Column(
+            "keyword_id",
+            sa.Integer,
+            sa.ForeignKey("content_keywords.keyword_id"),
+            primary_key=True,
+        ),
+    )
+    alembic.op.add_column(
+        "catalogue_updates", sa.Column("content_repo_commit", sa.String)
+    )
+
+
+def downgrade() -> None:
+    alembic.op.drop_table("contents_keywords_m2m")
+    alembic.op.drop_table("content_keywords")
+    alembic.op.drop_table("contents")
+    alembic.op.drop_column("catalogue_updates", "content_repo_commit")

cads_catalogue/contents.py

@@ -0,0 +1,237 @@
+"""utility module to load and store contents in the catalogue database."""
+# Copyright 2022, European Union.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import json
+import os
+import pathlib
+from typing import Any, List
+
+import sqlalchemy as sa
+import structlog
+
+from cads_catalogue import config, database, object_storage
+
+THIS_PATH = os.path.abspath(os.path.dirname(__file__))
+logger = structlog.get_logger(__name__)
+
+OBJECT_STORAGE_UPLOAD_FIELDS = ["layout", "image"]
+
+
+def content_sync(
+    session: sa.orm.session.Session,
+    content: dict[str, Any],
+    storage_settings: config.ObjectStorageSettings,
+) -> database.Content:
+    """
+    Update db record with a content's metadata dictionary.
+
+    Parameters
+    ----------
+    session: opened SQLAlchemy session
+    content: metadata of loaded content
+    storage_settings: object with settings to access the object storage
+
+    Returns
+    -------
+    The created/updated db message
+    """
+    content = content.copy()
+    content_uid = content["content_uid"]
+    keywords = content.pop("keywords", [])
+
+    subpath = os.path.join("contents", content["content_uid"])
+    for field in OBJECT_STORAGE_UPLOAD_FIELDS:
+        file_path = content.get(field)
+        if not file_path:
+            continue
+        content[field] = object_storage.store_file(
+            file_path,
+            storage_settings.object_storage_url,
+            bucket_name=storage_settings.catalogue_bucket,
+            subpath=subpath,
+            **storage_settings.storage_kws,
+        )
+
+    # upsert of the message
+    db_content = session.scalars(
+        sa.select(database.Content).filter_by(content_uid=content_uid).limit(1)
+    ).first()
+    if not db_content:
+        db_content = database.Content(**content)
+        session.add(db_content)
+        logger.debug("added db content %r" % content_uid)
+    else:
+        session.execute(
+            sa.update(database.Content)
+            .filter_by(content_id=db_content.content_id)
+            .values(**content)
+        )
+        logger.debug("updated db content %r" % content_uid)
+
+    # build related keywords
+    db_content.keywords = []  # type: ignore
+    for keyword in set(keywords):
+        category_name, category_value = [r.strip() for r in keyword.split(":")]
+        kw_md = {
+            "category_name": category_name,
+            "category_value": category_value,
+            "keyword_name": keyword,
+        }
+        keyword_obj = session.scalars(
+            sa.select(database.ContentKeyword).filter_by(**kw_md).limit(1)
+        ).first()
+        if not keyword_obj:
+            keyword_obj = database.ContentKeyword(**kw_md)
+        db_content.keywords.append(keyword_obj)
+    return db_content
+
+
+def load_content_folder(content_folder: str | pathlib.Path) -> dict[str, Any]:
+    """
+    Parse a content folder and returns its metadata dictionary.
+
+    Parameters
+    ----------
+    content_folder: folder path containing content files
+
+    Returns
+    -------
+    dictionary of information parsed.
+    """
+    metadata_file_path = os.path.join(content_folder, "metadata.json")
+    with open(metadata_file_path) as fp:
+        data = json.load(fp)
+    metadata = {
+        "site": ",".join(data["site"]),
+        "type": data["resource_type"],
+        "content_uid": data["id"],
+        "title": data["title"],
+        "description": data["abstract"],
+        "publication_date": data["publication_date"],
+        "content_update": data["update_date"],
+        "link": data.get("link"),
+        "keywords": data.get("keywords", []),
+        "data": data.get("data"),
+        # managed below:
+        # "image": None,
+        # "layout": None,
+    }
+    for ancillar_file_field in OBJECT_STORAGE_UPLOAD_FIELDS:  # image, layout
+        metadata[ancillar_file_field] = None
+        rel_path = data.get(ancillar_file_field)
+        if rel_path:
+            ancillar_file_path = os.path.abspath(os.path.join(content_folder, rel_path))
+            if os.path.isfile(ancillar_file_path):
+                metadata[ancillar_file_field] = os.path.abspath(
+                    os.path.join(content_folder, rel_path)
+                )
+            else:
+                raise ValueError(
+                    f"{metadata_file_path} contains reference to {ancillar_file_field} file not found!"
+                )
+    return metadata
+
+
+def load_contents(contents_root_folder: str | pathlib.Path) -> List[dict[str, Any]]:
+    """
+    Load all contents from a folder and return a dictionary of metadata extracted.
+
+    Parameters
+    ----------
+    contents_root_folder: root path where to look for contents (i.e. cads-contents-json root folder)
+
+    Returns
+    -------
+    List of found contents parsed.
+    """
+    loaded_contents = []
+    if not os.path.isdir(contents_root_folder):
+        logger.warning("not found folder {contents_root_folder}!")
+        return []
+    exclude_folder_names = [".git"]
+    for content_folder_name in sorted(os.listdir(contents_root_folder)):
+        if content_folder_name in exclude_folder_names:
+            continue
+        content_folder = os.path.join(contents_root_folder, content_folder_name)
+        if not os.path.isdir(content_folder):
+            logger.warning("unknown file %r found" % content_folder)
+            continue
+        try:
+            content_md = load_content_folder(content_folder)
+        except:  # noqa
+            logger.exception(
+                "failed parsing content in %s, error follows" % content_folder
+            )
+            continue
+        loaded_contents.append(content_md)
+    return loaded_contents
+
+
+def update_catalogue_contents(
+    session: sa.orm.session.Session,
+    contents_package_path: str | pathlib.Path,
+    storage_settings: config.ObjectStorageSettings,
+    remove_orphans: bool = True,
+):
+    """
+    Load metadata of contents from files and sync each content in the db.
+
+    Parameters
+    ----------
+    session: opened SQLAlchemy session
+    contents_package_path: root folder path of the contents package (i.e. cads-contents-json root folder)
+    storage_settings: object with settings to access the object storage
+    remove_orphans: if True, remove from the database other contents not involved (default True)
+
+    Returns
+    -------
+    list: list of content uids involved
+    """
+    contents = load_contents(contents_package_path)
+    logger.info(
+        "loaded %s contents from folder %s" % (len(contents), contents_package_path)
+    )
+    involved_content_ids = []
+    for content in contents:
+        content_uid = content["content_uid"]
+        involved_content_ids.append(content_uid)
+        try:
+            with session.begin_nested():
+                content_sync(session, content, storage_settings)
+            logger.info("content '%s' db sync successful" % content_uid)
+        except Exception:  # noqa
+            logger.exception(
+                "db sync for content '%s' failed, error follows" % content_uid
+            )
+
+    if not remove_orphans:
+        return involved_content_ids
+
+    # remove not loaded contents from the db
+    contents_to_delete = (
+        session.scalars(
+            sa.select(database.Content).filter(
+                database.Content.content_uid.notin_(involved_content_ids)
+            )
+        )
+        .unique()
+        .all()
+    )
+    for content_to_delete in contents_to_delete:
+        content_to_delete.keywords = []
+        session.delete(content_to_delete)
+        logger.info("removed old content '%s'" % content_to_delete.content_uid)
+
+    return involved_content_ids

cads_catalogue/database.py

@@ -65,9 +65,64 @@ class CatalogueUpdate(BaseModel):
     licence_repo_commit = sa.Column(sa.String)
     message_repo_commit = sa.Column(sa.String)
     cim_repo_commit = sa.Column(sa.String)
+    content_repo_commit = sa.Column(sa.String)
     override_md = sa.Column(dialect_postgresql.JSONB, default={})
 
 
+class Content(BaseModel):
+    """Content ORM model."""
+
+    __tablename__ = "contents"
+
+    content_id = sa.Column(sa.Integer, primary_key=True)
+    content_uid = sa.Column(sa.String, index=True, unique=True, nullable=False)
+    content_update = sa.Column(sa.TIMESTAMP, nullable=False)
+    data = sa.Column(dialect_postgresql.JSONB)
+    description = sa.Column(sa.String, nullable=False)
+    image = sa.Column(sa.String)
+    layout = sa.Column(sa.String)
+    link = sa.Column(sa.String)
+    publication_date = sa.Column(sa.TIMESTAMP, nullable=False)
+    site = sa.Column(sa.String, index=True, nullable=False)
+    title = sa.Column(sa.String, nullable=False)
+    type = sa.Column(sa.String, nullable=False)
+
+    keywords: sa.orm.Mapped[List["ContentKeyword"]] = sa.orm.relationship(
+        "ContentKeyword", secondary="contents_keywords_m2m", back_populates="contents"
+    )
+
+
+class ContentKeyword(BaseModel):
+    """ContentKeyword ORM model."""
+
+    __tablename__ = "content_keywords"
+
+    keyword_id = sa.Column(sa.Integer, primary_key=True)
+    category_name = sa.Column(sa.String)
+    category_value = sa.Column(sa.String)
+    keyword_name = sa.Column(sa.String)
+
+    contents: sa.orm.Mapped[List["Content"]] = sa.orm.relationship(
+        "Content",
+        secondary="contents_keywords_m2m",
+        back_populates="keywords",
+        uselist=True,
+    )
+
+
+class ContentsKeywordM2M(BaseModel):
+    """many-to-may ORM model for contents-keywords."""
+
+    __tablename__ = "contents_keywords_m2m"
+
+    content_id = sa.Column(
+        sa.Integer, sa.ForeignKey("contents.content_id"), primary_key=True
+    )
+    keyword_id = sa.Column(
+        sa.Integer, sa.ForeignKey("content_keywords.keyword_id"), primary_key=True
+    )
+
+
 class ResourceLicence(BaseModel):
     """many-to-many ORM model for resources-licences."""