MAJOR REFACTOR P3

app/__init__.py

@@ -9,7 +9,8 @@ __all__ = ["app"]
 db = SQLAlchemy(app=app)
 
 # Set up migration
-migration = Migrate(app=app, db=db)
+migrations_dir = Path(__file__).parent / "migrations"
+migration = Migrate(app=app, db=db, directory=str(migrations_dir))
 
 # Init and upgrade
 with app.app_context():

app/aio_client/worker.py

@@ -1,5 +1,5 @@
 from sqlalchemy.orm import sessionmaker
-from app.config import timeout as timeout_
+from config import timeout as timeout_
 import aiohttp
 import asyncio
 import time

app/config.py

@@ -1 +0,0 @@
-timeout: int = 4000

app/flask_app/routes.py

@@ -1,7 +1,7 @@
 from flask import Blueprint, render_template, abort, jsonify, send_file, json
 from typing import cast, Optional, Any
 from datetime import datetime, timedelta, timezone
-from app.config import timeout
+from config import timeout
 from ..models import service, log
 from app import app, db
 

app/migrations/README

@@ -0,0 +1 @@
+Single-database configuration for Flask.

app/migrations/alembic.ini

@@ -0,0 +1,50 @@
+# A generic, single database configuration.
+
+[alembic]
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic,flask_migrate
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[logger_flask_migrate]
+level = INFO
+handlers =
+qualname = flask_migrate
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

app/migrations/env.py

@@ -0,0 +1,113 @@
+import logging
+from logging.config import fileConfig
+
+from flask import current_app
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+logger = logging.getLogger('alembic.env')
+
+
+def get_engine():
+    try:
+        # this works with Flask-SQLAlchemy<3 and Alchemical
+        return current_app.extensions['migrate'].db.get_engine()
+    except (TypeError, AttributeError):
+        # this works with Flask-SQLAlchemy>=3
+        return current_app.extensions['migrate'].db.engine
+
+
+def get_engine_url():
+    try:
+        return get_engine().url.render_as_string(hide_password=False).replace(
+            '%', '%%')
+    except AttributeError:
+        return str(get_engine().url).replace('%', '%%')
+
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+config.set_main_option('sqlalchemy.url', get_engine_url())
+target_db = current_app.extensions['migrate'].db
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def get_metadata():
+    if hasattr(target_db, 'metadatas'):
+        return target_db.metadatas[None]
+    return target_db.metadata
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url, target_metadata=get_metadata(), literal_binds=True
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    # this callback is used to prevent an auto-migration from being generated
+    # when there are no changes to the schema
+    # reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
+    def process_revision_directives(context, revision, directives):
+        if getattr(config.cmd_opts, 'autogenerate', False):
+            script = directives[0]
+            if script.upgrade_ops.is_empty():
+                directives[:] = []
+                logger.info('No changes in schema detected.')
+
+    conf_args = current_app.extensions['migrate'].configure_args
+    if conf_args.get("process_revision_directives") is None:
+        conf_args["process_revision_directives"] = process_revision_directives
+
+    connectable = get_engine()
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=get_metadata(),
+            **conf_args
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

app/migrations/script.py.mako

@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}

app/migrations/versions/3c05315d5b9b_.py

@@ -0,0 +1,37 @@
+"""empty message
+
+Revision ID: 3c05315d5b9b
+Revises: f87909a4293b
+Create Date: 2025-09-05 09:48:08.561045
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "3c05315d5b9b"
+down_revision = "f87909a4293b"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("log", schema=None) as batch_op:
+        batch_op.add_column(
+            sa.Column(
+                "timeout", sa.Boolean(), nullable=False, server_default="false"
+            )
+        )
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("log", schema=None) as batch_op:
+        batch_op.drop_column("timeout")
+
+    # ### end Alembic commands ###

app/migrations/versions/d7d380435347_.py

@@ -0,0 +1,32 @@
+"""empty message
+
+Revision ID: d7d380435347
+Revises: 
+Create Date: 2025-09-02 08:43:16.682424
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'd7d380435347'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('log',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('dateCreated', sa.DateTime(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('log')
+    # ### end Alembic commands ###

app/migrations/versions/f04407e8e466_.py

@@ -0,0 +1,35 @@
+"""empty message
+
+Revision ID: f04407e8e466
+Revises: d7d380435347
+Create Date: 2025-09-03 15:40:30.413166
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'f04407e8e466'
+down_revision = 'd7d380435347'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('service',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('url', sa.String(), nullable=False),
+    sa.Column('label', sa.String(length=15), nullable=False),
+    sa.Column('public_access', sa.Boolean(), nullable=False),
+    sa.Column('ping_method', sa.Integer(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('service')
+    # ### end Alembic commands ###

app/migrations/versions/f87909a4293b_.py

@@ -0,0 +1,50 @@
+"""empty message
+
+Revision ID: f87909a4293b
+Revises: f04407e8e466
+Create Date: 2025-09-03 16:36:14.608372
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "f87909a4293b"
+down_revision = "f04407e8e466"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.execute("DROP TABLE IF EXISTS _alembic_tmp_log")
+    op.execute("DELETE FROM log")
+
+    with op.batch_alter_table("log", schema=None) as batch_op:
+        batch_op.add_column(
+            sa.Column(
+                "service_id", sa.Integer(), nullable=False, server_default="0"
+            )
+        )
+        batch_op.add_column(sa.Column("ping", sa.Integer(), nullable=True))
+        batch_op.create_index(
+            batch_op.f("ix_log_dateCreated"), ["dateCreated"], unique=False
+        )
+        batch_op.create_foreign_key(
+            "fk_log2service", "service", ["service_id"], ["id"]
+        )
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("log", schema=None) as batch_op:
+        batch_op.drop_constraint("fk_log2service", type_="foreignkey")
+        batch_op.drop_index(batch_op.f("ix_log_dateCreated"))
+        batch_op.drop_column("ping")
+        batch_op.drop_column("service_id")
+
+    # ### end Alembic commands ###

app/routes.py

@@ -0,0 +1,95 @@
+from flask import Blueprint, render_template, abort, jsonify, send_file, json
+from typing import cast, Optional, Any
+from datetime import datetime, timedelta, timezone
+from config import timeout
+from ..models import service, log
+from app import app, db
+
+bp = Blueprint(
+    "api",
+    "__name__",
+    url_prefix="/api",
+    static_folder="static",
+)
+
+
+# Prepares log data for chart.js chart
+def prepare_chart_data(
+    logs: list[log],
+) -> tuple[list[str], list[Optional[int]]]:
+    if len(logs) <= 0:  # Return empty if there are no logs
+        return ([], [])
+
+    x = [logs[0].dateCreatedUTC().isoformat()]
+    y = [logs[0].ping]
+
+    for i in range(1, len(logs)):
+        log1 = logs[i]
+        log2 = logs[i - 1]
+
+        # Check if the gap in points exceeds a threshold
+        if (abs(log1.dateCreatedUTC() - log2.dateCreatedUTC())) > timedelta(
+            milliseconds=1.5 * (timeout + 1000)
+        ):
+            x.append(log2.dateCreatedUTC().isoformat())
+            y.append(None)
+
+        x.append(log1.dateCreatedUTC().isoformat())
+        y.append(log1.ping)
+    return (x, y)
+
+
+@bp.route("/")
+def homepage():
+    return render_template("home.html")
+
+
+@bp.route("/chart/<int:id>")
+def chart(id: int):
+    with app.app_context():
+        logs = []
+        s = db.session.query(service).filter_by(id=id).first()
+        if s:
+            logs = cast(
+                list[log],
+                s.logs.order_by(log.dateCreated.desc())  # type: ignore
+                .limit(300)
+                .all(),
+            )
+        else:
+            return abort(code=403)
+    x, y = prepare_chart_data(logs=logs)
+
+    now = datetime.now(timezone.utc)
+    max_ = now
+    min_ = now - timedelta(hours=1)
+    return render_template(
+        "chart.html",
+        dates=x,
+        values=json.dumps(y),
+        min=min_.isoformat(),
+        max=max_.isoformat(),
+    )
+
+
+@bp.route("/status")
+def status():
+    results: list[dict[str, Any]] = []
+    with app.app_context():
+        a = db.session.query(service).all()
+        for s in a:
+            b = cast(
+                Optional[log],
+                s.logs.order_by(
+                    log.dateCreated.desc()  # type: ignore
+                ).first(),
+            )
+            if b:
+                results.append(s.to_dict() | b.to_dict())
+
+    return jsonify(results)
+
+
+@bp.route("/favicon.svg")
+def favicon():
+    return send_file("/static/favicon.svg")