[AIRFLOW-1433] Implement FAB-backed webserver (WIP, Illustration-Only)

airflow/www2/app/__init__.py

@@ -0,0 +1,76 @@
+import logging
+import six
+from flask import Flask, redirect
+from flask_appbuilder import SQLA, AppBuilder, IndexView, expose
+from flask_wtf.csrf import CSRFProtect
+
+csrf = CSRFProtect()
+
+"""
+ Logging configuration
+"""
+
+logging.basicConfig(format='%(asctime)s:%(levelname)s:%(name)s:%(message)s')
+logging.getLogger().setLevel(logging.DEBUG)
+
+app = Flask(__name__)
+app.config.from_object('config')
+
+csrf.init_app(app)
+db = SQLA(app)
+
+class AirflowIndexView(IndexView):
+    @expose("/")
+    def index(self):
+        return redirect('/admin')
+
+from airflow import api
+api.load_auth()
+from app.api.experimental import endpoints as e
+# required for testing purposes otherwise the module retains
+# a link to the default_auth
+if app.config['TESTING']:
+    if six.PY2:
+        reload(e)
+    else:
+        import importlib
+        importlib.reload(e)
+app.register_blueprint(e.api_experimental, url_prefix='/api/experimental')
+
+appbuilder = AppBuilder(
+    app, db.session,
+    base_template='appbuilder/baselayout.html',
+    indexview=AirflowIndexView)
+
+from app import views
+
+appbuilder.add_view_no_menu(views.Airflow())
+appbuilder.add_view_no_menu(views.QueryView())
+appbuilder.add_view_no_menu(views.VersionView())
+appbuilder.add_view_no_menu(views.ConfigurationView())
+appbuilder.add_view_no_menu(views.DagModelModelView())
+
+appbuilder.add_link("Ad Hoc Query", href='/admin/queryview', category="Data Profiling", category_icon="fa-check")
+appbuilder.add_view(views.KnownEventModelView, "Known Events", category="Data Profiling")
+appbuilder.add_view(views.ChartModelView, "Charts", category="Data Profiling")
+
+appbuilder.add_view(views.DagRunModelView, "DAG Runs", category="Browse", category_icon="fa-globe")
+appbuilder.add_view(views.TaskInstanceModelView, "Task Instances", category="Browse")
+appbuilder.add_view(views.SlaMissModelView, "SLA Misses", category="Browse")
+appbuilder.add_view(views.JobModelView, "Jobs", category="Browse")
+appbuilder.add_view(views.LogModelView, "Logs", category="Browse")
+
+appbuilder.add_link("Configurations", href='/admin/configurationview', category="Admin", category_icon="fa-user")
+appbuilder.add_view(views.XComModelView, "XComs", category="Admin")
+appbuilder.add_view(views.ConnectionModelView, "Connections", category="Admin")
+appbuilder.add_view(views.VariableModelView, "Variables", category="Admin")
+appbuilder.add_view(views.PoolModelView, "Pools", category="Admin")
+
+appbuilder.add_link("Documentation", href='http://pythonhosted.org/airflow/', category="Docs", category_icon="fa-cube")
+appbuilder.add_link("Github", href='https://github.com/apache/incubator-airflow', category="Docs")
+
+appbuilder.add_link("Version", href='/admin/versionview', category="About", category_icon="fa-th")
+
+appbuilder.security_cleanup()
+
+from app import security

airflow/www2/app/models.py

@@ -0,0 +1,274 @@
+from flask_appbuilder import Model
+from sqlalchemy import Column, Integer, String, ForeignKey, DateTime, Boolean, Text, Float, func, Index
+from sqlalchemy.orm import relationship
+
+from airflow.ti_deps.dep_context import DepContext
+from airflow.utils.state import State
+from airflow import configuration
+
+ID_LEN = 250
+
+
+class DagModel(Model):
+    __tablename__ = "dag"
+
+    dag_id = Column(String(ID_LEN), primary_key=True)
+    is_paused_at_creation = configuration.getboolean('core',
+                                                     'dags_are_paused_at_creation')
+    is_paused = Column(Boolean, default=is_paused_at_creation)
+    is_subdag = Column(Boolean, default=False)
+    is_active = Column(Boolean, default=False)
+    last_scheduler_run = Column(DateTime)
+    last_pickled = Column(DateTime)
+    last_expired = Column(DateTime)
+    scheduler_lock = Column(Boolean)
+    pickle_id = Column(Integer)
+    fileloc = Column(String(2000))
+    owners = Column(String(2000))
+
+
+class XCom(Model):
+    __tablename__ = "xcom"
+
+    id = Column(Integer, primary_key=True)
+    key = Column(String(512))
+    # todo: FAB can't handle binary
+    # value = Column(PickleType(pickler=dill))
+    value = None
+    timestamp = Column(DateTime, default=func.now(), nullable=False)
+    execution_date = Column(DateTime, nullable=False)
+    task_id = Column(String(ID_LEN), nullable=False)
+    dag_id = Column(String(ID_LEN), nullable=False)
+
+
+class DagRun(Model):
+    __tablename__ = "dag_run"
+
+    ID_PREFIX = 'scheduled__'
+    ID_FORMAT_PREFIX = ID_PREFIX + '{0}'
+    DEADLOCK_CHECK_DEP_CONTEXT = DepContext(ignore_in_retry_period=True)
+
+    id = Column(Integer, primary_key=True)
+    dag_id = Column(String(ID_LEN))
+    execution_date = Column(DateTime, default=func.now())
+    start_date = Column(DateTime, default=func.now())
+    end_date = Column(DateTime)
+    state = Column('state', String(50), default=State.RUNNING)
+    run_id = Column(String(ID_LEN))
+    external_trigger = Column(Boolean, default=True)
+    # todo: FAB can't handle binary
+    # conf = Column(PickleType)
+    conf = None
+
+
+class Connection(Model):
+    __tablename__ = "connection"
+
+    id = Column(Integer(), primary_key=True)
+    conn_id = Column(String(ID_LEN))
+    conn_type = Column(String(500))
+    host = Column(String(500))
+    schema = Column(String(500))
+    login = Column(String(500))
+    password = Column('password', String(5000))
+    port = Column(Integer())
+    is_encrypted = Column(Boolean, unique=False, default=False)
+    is_extra_encrypted = Column(Boolean, unique=False, default=False)
+    extra = Column('extra', String(5000))
+
+
+class Variable(Model):
+    __tablename__ = "variable"
+
+    id = Column(Integer, primary_key=True)
+    key = Column(String(ID_LEN), unique=True)
+    val = Column('val', Text)
+    is_encrypted = Column(Boolean, unique=False, default=False)
+
+
+class Pool(Model):
+    __tablename__ = "slot_pool"
+
+    id = Column(Integer, primary_key=True)
+    pool = Column(String(50), unique=True)
+    slots = Column(Integer, default=0)
+    description = Column(Text)
+
+class SlaMiss(Model):
+    __tablename__ = "sla_miss"
+
+    task_id = Column(String(ID_LEN), primary_key=True)
+    dag_id = Column(String(ID_LEN), primary_key=True)
+    execution_date = Column(DateTime, primary_key=True)
+    email_sent = Column(Boolean, default=False)
+    timestamp = Column(DateTime)
+    description = Column(Text)
+    notification_sent = Column(Boolean, default=False)
+
+
+class DagPickle(Model):
+    __tablename__ = "dag_pickle"
+
+    id = Column(Integer, primary_key=True)
+    # todo: FAB can't handle binary
+    # pickle = Column(PickleType(pickler=dill))
+    created_dttm = Column(DateTime, default=func.now())
+    pickle_hash = Column(Text)
+
+
+class TaskInstance(Model):
+    __tablename__ = "task_instance"
+
+    task_id = Column(String(ID_LEN), primary_key=True)
+    dag_id = Column(String(ID_LEN), primary_key=True)
+    execution_date = Column(DateTime, primary_key=True)
+    start_date = Column(DateTime)
+    end_date = Column(DateTime)
+    duration = Column(Float)
+    state = Column(String(20))
+    try_number = Column(Integer, default=0)
+    max_tries = Column(Integer)
+    hostname = Column(String(1000))
+    unixname = Column(String(1000))
+    job_id = Column(Integer)
+    pool = Column(String(50))
+    queue = Column(String(50))
+    priority_weight = Column(Integer)
+    operator = Column(String(1000))
+    queued_dttm = Column(DateTime)
+    pid = Column(Integer)
+
+
+class TaskFail(Model):
+    __tablename__ = "task_fail"
+
+    task_id = Column(String(ID_LEN), primary_key=True)
+    dag_id = Column(String(ID_LEN), primary_key=True)
+    execution_date = Column(DateTime, primary_key=True)
+    start_date = Column(DateTime)
+    end_date = Column(DateTime)
+    duration = Column(Float)
+
+
+class Log(Model):
+    __tablename__ = "log"
+
+    id = Column(Integer, primary_key=True)
+    dttm = Column(DateTime)
+    dag_id = Column(String(ID_LEN))
+    task_id = Column(String(ID_LEN))
+    event = Column(String(30))
+    execution_date = Column(DateTime)
+    owner = Column(String(500))
+    extra = Column(Text)
+
+
+class Chart(Model):
+    __tablename__ = "chart"
+
+    id = Column(Integer, primary_key=True)
+    label = Column(String(200))
+    conn_id = Column(String(ID_LEN), nullable=False)
+    user_id = Column(Integer(), ForeignKey('users.id'), nullable=True)
+    chart_type = Column(String(100), default="line")
+    sql_layout = Column(String(50), default="series")
+    sql = Column(Text, default="SELECT series, x, y FROM table")
+    y_log_scale = Column(Boolean)
+    show_datatable = Column(Boolean)
+    show_sql = Column(Boolean, default=True)
+    height = Column(Integer, default=600)
+    default_params = Column(String(5000), default="{}")
+    owner = relationship(
+        "User_", cascade=False, cascade_backrefs=False, backref='charts')
+    x_is_date = Column(Boolean, default=True)
+    iteration_no = Column(Integer, default=0)
+    last_modified = Column(DateTime, default=func.now())
+
+
+class KnownEventType_(Model): # modified so there's no collision with airflow.models
+    __tablename__ = "known_event_type"
+
+    id = Column(Integer, primary_key=True)
+    know_event_type = Column(String(200))
+
+
+class User_(Model): # modified so there's no collision with airflow.models
+    __tablename__ = "users"
+
+    id = Column(Integer, primary_key=True)
+    username = Column(String(ID_LEN), unique=True)
+    email = Column(String(500))
+
+
+class KnownEvent(Model):
+    __tablename__ = "known_event"
+
+    id = Column(Integer, primary_key=True)
+    label = Column(String(200))
+    start_date = Column(DateTime)
+    end_date = Column(DateTime)
+    user_id = Column(Integer(), ForeignKey('users.id'),)
+    known_event_type_id = Column(Integer(), ForeignKey('known_event_type.id'),)
+    description = Column(Text)
+    reported_by = relationship(
+        "User_", cascade=False, cascade_backrefs=False, backref='known_events')
+    event_type = relationship(
+        "KnownEventType_", cascade=False, cascade_backrefs=False, backref='known_events')
+
+class DagStat(Model):
+    __tablename__ = "dag_stats"
+
+    dag_id = Column(String(ID_LEN), primary_key=True)
+    state = Column(String(50), primary_key=True)
+    count = Column(Integer, default=0)
+    dirty = Column(Boolean, default=False)
+
+
+class ImportError(Model):
+    __tablename__ = "import_error"
+    id = Column(Integer, primary_key=True)
+    timestamp = Column(DateTime)
+    filename = Column(String(1024))
+    stacktrace = Column(Text)
+
+
+class BaseJob(Model):
+    __tablename__ = "job"
+
+    id = Column(Integer, primary_key=True)
+    dag_id = Column(String(ID_LEN),)
+    state = Column(String(20))
+    job_type = Column(String(30))
+    start_date = Column(DateTime())
+    end_date = Column(DateTime())
+    latest_heartbeat = Column(DateTime())
+    executor_class = Column(String(500))
+    hostname = Column(String(500))
+    unixname = Column(String(1000))
+
+    __mapper_args__ = {
+        'polymorphic_on': job_type,
+        'polymorphic_identity': 'BaseJob'
+    }
+
+    __table_args__ = (
+        Index('job_type_heart', job_type, latest_heartbeat),
+    )
+
+
+class SchedulerJob(BaseJob):
+    __mapper_args__ = {
+        'polymorphic_identity': 'SchedulerJob'
+    }
+
+
+class BackfillJob(BaseJob):
+    __mapper_args__ = {
+        'polymorphic_identity': 'BackfillJob'
+    }
+
+
+class LocalTaskJob(BaseJob):
+    __mapper_args__ = {
+        'polymorphic_identity': 'LocalTaskJob'
+    }