mirror of
https://github.com/apache/superset.git
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Merge pull request #186 from mistercrunch/docstrings
Adding docstrings !
This commit is contained in:
Maxime Beauchemin
commit
f0b2f985b4
@ -8,8 +8,11 @@ autodetect: yes
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pylint:
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disable:
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- cyclic-import
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- invalid-name
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options:
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docstring-min-length: 10
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pep8:
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full: true
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ignore-paths:
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- docs
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- panoramix/migrations/env.py
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@ -1,3 +1,5 @@
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"""Package's main module!"""
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import logging
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import os
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from flask import Flask, redirect
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@ -1,3 +1,5 @@
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"""Loads datasets, dashboards and slices in a new panoramix instance"""
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import gzip
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import json
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import os
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@ -46,6 +48,7 @@ def get_slice_json(defaults, **kwargs):
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def load_world_bank_health_n_pop():
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"""Loads the world bank health dataset, slices and a dashboard"""
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tbl_name = 'wb_health_population'
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with gzip.open(os.path.join(DATA_FOLDER, 'countries.json.gz')) as f:
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pdf = pd.read_json(f)
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@ -282,6 +285,7 @@ def load_world_bank_health_n_pop():
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def load_css_templates():
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"""Loads 2 css templates to demonstrate the feature"""
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print('Creating default CSS templates')
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CSS = models.CssTemplate
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@ -493,6 +493,7 @@ class FormFactory(object):
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return [("{}".format(obj), "{}".format(obj)) for obj in l]
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def get_form(self):
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"""Returns a form object based on the viz/datasource/context"""
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viz = self.viz
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field_css_classes = {}
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for name, obj in self.field_dict.items():
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@ -1,3 +1,7 @@
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"""
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A collection of ORM sqlalchemy models for Panoramix
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"""
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from copy import deepcopy, copy
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from collections import namedtuple
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from datetime import timedelta, datetime
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@ -36,6 +40,12 @@ QueryResult = namedtuple('namedtuple', ['df', 'query', 'duration'])
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class AuditMixinNullable(AuditMixin):
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"""Altering the AuditMixin to use nullable fields
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Allows creating objects programmatically outside of CRUD
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"""
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created_on = Column(DateTime, default=datetime.now, nullable=True)
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changed_on = Column(
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DateTime, default=datetime.now,
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@ -142,6 +152,7 @@ class Slice(Model, AuditMixinNullable):
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@property
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def slice_url(self):
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"""Defines the url to access the slice"""
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try:
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slice_params = json.loads(self.params)
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except Exception as e:
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@ -175,7 +186,7 @@ dashboard_slices = Table('dashboard_slices', Model.metadata,
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class Dashboard(Model, AuditMixinNullable):
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"""A dash to slash"""
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"""The dashboard object!"""
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__tablename__ = 'dashboards'
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id = Column(Integer, primary_key=True)
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@ -218,6 +229,7 @@ class Dashboard(Model, AuditMixinNullable):
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class Queryable(object):
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"""A common interface to objects that are queryable (tables and datasources)"""
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@property
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def column_names(self):
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return sorted([c.column_name for c in self.columns])
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@ -240,6 +252,9 @@ class Queryable(object):
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class Database(Model, AuditMixinNullable):
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"""An ORM object that stores Database related information"""
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__tablename__ = 'dbs'
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id = Column(Integer, primary_key=True)
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database_name = Column(String(250), unique=True)
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@ -256,15 +271,14 @@ class Database(Model, AuditMixinNullable):
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return self.sqlalchemy_uri
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def grains(self):
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"""Defines time granularity database-specific expressions.
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"""Defines time granularity database-specific expressions. The idea
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here is to make it easy for users to change the time grain form a
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datetime (maybe the source grain is arbitrary timestamps, daily
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The idea here is to make it easy for users to change the time grain
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form a datetime (maybe the source grain is arbitrary timestamps, daily
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or 5 minutes increments) to another, "truncated" datetime. Since
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each database has slightly different but similar datetime functions,
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this allows a mapping between database engines and actual functions.
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"""
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Grain = namedtuple('Grain', 'name function')
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DB_TIME_GRAINS = {
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'presto': (
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@ -314,6 +328,9 @@ class Database(Model, AuditMixinNullable):
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class SqlaTable(Model, Queryable, AuditMixinNullable):
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"""An ORM object for SqlAlchemy table references"""
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type = "table"
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__tablename__ = 'tables'
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@ -554,6 +571,7 @@ class SqlaTable(Model, Queryable, AuditMixinNullable):
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df=df, duration=datetime.now() - qry_start_dttm, query=sql)
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def fetch_metadata(self):
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"""Fetches the metadata for the table and merges it in"""
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table = self.database.get_table(self.table_name)
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try:
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table = self.database.get_table(self.table_name)
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@ -653,6 +671,9 @@ class SqlaTable(Model, Queryable, AuditMixinNullable):
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class SqlMetric(Model, AuditMixinNullable):
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"""ORM object for metrics, each table can have multiple metrics"""
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__tablename__ = 'sql_metrics'
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id = Column(Integer, primary_key=True)
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metric_name = Column(String(512))
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@ -666,6 +687,9 @@ class SqlMetric(Model, AuditMixinNullable):
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class TableColumn(Model, AuditMixinNullable):
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"""ORM object for table columns, each table can have multiple columns"""
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__tablename__ = 'table_columns'
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id = Column(Integer, primary_key=True)
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table_id = Column(Integer, ForeignKey('tables.id'))
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@ -693,6 +717,9 @@ class TableColumn(Model, AuditMixinNullable):
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class DruidCluster(Model, AuditMixinNullable):
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"""ORM object referencing the Druid clusters"""
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__tablename__ = 'clusters'
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id = Column(Integer, primary_key=True)
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cluster_name = Column(String(250), unique=True)
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@ -726,6 +753,9 @@ class DruidCluster(Model, AuditMixinNullable):
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class DruidDatasource(Model, AuditMixinNullable, Queryable):
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"""ORM object referencing Druid datasources (tables)"""
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type = "druid"
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baselink = "datasourcemodelview"
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@ -793,6 +823,7 @@ class DruidDatasource(Model, AuditMixinNullable, Queryable):
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][0]
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def latest_metadata(self):
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"""Returns segment metadata from the latest segment"""
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client = self.cluster.get_pydruid_client()
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results = client.time_boundary(datasource=self.datasource_name)
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if not results:
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@ -813,6 +844,7 @@ class DruidDatasource(Model, AuditMixinNullable, Queryable):
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@classmethod
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def sync_to_db(cls, name, cluster):
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"""Fetches metadata for that datasource and merges the Panoramix db"""
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print("Syncing Druid datasource [{}]".format(name))
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session = get_session()
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datasource = session.query(cls).filter_by(datasource_name=name).first()
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@ -855,8 +887,13 @@ class DruidDatasource(Model, AuditMixinNullable, Queryable):
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timeseries_limit=None,
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row_limit=None,
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inner_from_dttm=None, inner_to_dttm=None,
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extras=None,
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extras=None, # noqa
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select=None):
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"""Runs a query against Druid and returns a dataframe.
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This query interface is common to SqlAlchemy and Druid
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"""
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# TODO refactor into using a TBD Query object
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qry_start_dttm = datetime.now()
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inner_from_dttm = inner_from_dttm or from_dttm
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@ -996,6 +1033,9 @@ class DruidDatasource(Model, AuditMixinNullable, Queryable):
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class Log(Model):
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"""ORM object used to log Panoramix actions to the database"""
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__tablename__ = 'logs'
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id = Column(Integer, primary_key=True)
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@ -1033,6 +1073,9 @@ class Log(Model):
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class DruidMetric(Model):
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"""ORM object referencing Druid metrics for a datasource"""
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__tablename__ = 'metrics'
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id = Column(Integer, primary_key=True)
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metric_name = Column(String(512))
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@ -1055,6 +1098,9 @@ class DruidMetric(Model):
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class DruidColumn(Model):
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"""ORM model for storing Druid datasource column metadata"""
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__tablename__ = 'columns'
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id = Column(Integer, primary_key=True)
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datasource_name = Column(
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@ -1080,6 +1126,7 @@ class DruidColumn(Model):
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return self.type in ('LONG', 'DOUBLE', 'FLOAT')
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def generate_metrics(self):
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"""Generate metrics based on the column metadata"""
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M = DruidMetric
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metrics = []
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metrics.append(DruidMetric(
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@ -1,3 +1,5 @@
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"""Utility functions used across Panoramix"""
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from datetime import datetime
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import hashlib
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import functools
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@ -12,10 +14,12 @@ from flask_appbuilder.security.sqla import models as ab_models
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class memoized(object):
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"""Decorator that caches a function's return value each time it is called.
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If called later with the same arguments, the cached value is returned, and
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not re-evaluated.
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"""
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def __init__(self, func):
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self.func = func
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self.cache = {}
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@ -47,8 +51,7 @@ def list_minus(l, minus):
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def parse_human_datetime(s):
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"""
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Use the parsedatetime lib to return ``datetime.datetime`` from human
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generated strings
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Returns ``datetime.datetime`` from human readable strings
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>>> from datetime import date, timedelta
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>>> from dateutil.relativedelta import relativedelta
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@ -92,8 +95,7 @@ def merge_perm(sm, permission_name, view_menu_name):
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def parse_human_timedelta(s):
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"""
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Use the parsedatetime lib to return ``datetime.datetime`` from human
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generated strings
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Returns ``datetime.datetime`` from natural language time deltas
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>>> parse_human_datetime("now") <= datetime.now()
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True
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@ -107,7 +109,9 @@ def parse_human_timedelta(s):
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class JSONEncodedDict(TypeDecorator):
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"""Represents an immutable structure as a json-encoded string."""
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impl = TEXT
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def process_bind_param(self, value, dialect):
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if value is not None:
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@ -122,6 +126,9 @@ class JSONEncodedDict(TypeDecorator):
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class ColorFactory(object):
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"""Used to generated arrays of colors server side"""
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BNB_COLORS = [
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#rausch hackb kazan babu lima beach barol
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'#ff5a5f', '#7b0051', '#007A87', '#00d1c1', '#8ce071', '#ffb400', '#b4a76c',
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@ -134,7 +141,8 @@ class ColorFactory(object):
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self.hash_based = hash_based
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def get(self, s):
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"""
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"""Gets a color from a string and memoize the association
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>>> cf = ColorFactory()
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>>> cf.get('item_1')
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'#ff5a5f'
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@ -155,9 +163,7 @@ class ColorFactory(object):
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def init(panoramix):
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"""
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Inits the Panoramix application with security roles and such
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"""
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"""Inits the Panoramix application with security roles and such"""
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db = panoramix.db
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models = panoramix.models
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sm = panoramix.appbuilder.sm
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@ -204,9 +210,7 @@ def init(panoramix):
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def datetime_f(dttm):
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"""
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Formats datetime to take less room is recent
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"""
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"""Formats datetime to take less room when it is recent"""
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if dttm:
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dttm = dttm.isoformat()
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now_iso = datetime.now().isoformat()
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@ -1,3 +1,5 @@
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"""Flask web views for Panoramix"""
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from datetime import datetime
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import json
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import logging
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@ -44,7 +46,7 @@ class PanoramixModelView(ModelView):
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page_size = 500
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class TableColumnInlineView(CompactCRUDMixin, PanoramixModelView):
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class TableColumnInlineView(CompactCRUDMixin, PanoramixModelView): # noqa
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datamodel = SQLAInterface(models.TableColumn)
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can_delete = False
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edit_columns = [
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@ -72,7 +74,8 @@ appbuilder.add_link(
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appbuilder.add_separator("Sources")
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class DruidColumnInlineView(CompactCRUDMixin, PanoramixModelView):
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class DruidColumnInlineView(CompactCRUDMixin, PanoramixModelView): # noqa
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datamodel = SQLAInterface(models.DruidColumn)
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edit_columns = [
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'column_name', 'description', 'datasource', 'groupby',
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@ -89,7 +92,7 @@ class DruidColumnInlineView(CompactCRUDMixin, PanoramixModelView):
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appbuilder.add_view_no_menu(DruidColumnInlineView)
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||||
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||||
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class SqlMetricInlineView(CompactCRUDMixin, PanoramixModelView):
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class SqlMetricInlineView(CompactCRUDMixin, PanoramixModelView): # noqa
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datamodel = SQLAInterface(models.SqlMetric)
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list_columns = ['metric_name', 'verbose_name', 'metric_type']
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edit_columns = [
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@ -100,7 +103,7 @@ class SqlMetricInlineView(CompactCRUDMixin, PanoramixModelView):
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appbuilder.add_view_no_menu(SqlMetricInlineView)
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||||
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class DruidMetricInlineView(CompactCRUDMixin, PanoramixModelView):
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class DruidMetricInlineView(CompactCRUDMixin, PanoramixModelView): # noqa
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datamodel = SQLAInterface(models.DruidMetric)
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list_columns = ['metric_name', 'verbose_name', 'metric_type']
|
||||
edit_columns = [
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@ -115,7 +118,7 @@ class DruidMetricInlineView(CompactCRUDMixin, PanoramixModelView):
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||||
appbuilder.add_view_no_menu(DruidMetricInlineView)
|
||||
|
||||
|
||||
class DatabaseView(PanoramixModelView, DeleteMixin):
|
||||
class DatabaseView(PanoramixModelView, DeleteMixin): # noqa
|
||||
datamodel = SQLAInterface(models.Database)
|
||||
list_columns = ['database_name', 'sql_link', 'created_by_', 'changed_on']
|
||||
order_columns = utils.list_minus(list_columns, ['created_by_'])
|
||||
@ -149,7 +152,7 @@ appbuilder.add_view(
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category_icon='fa-database',)
|
||||
|
||||
|
||||
class TableModelView(PanoramixModelView, DeleteMixin):
|
||||
class TableModelView(PanoramixModelView, DeleteMixin): # noqa
|
||||
datamodel = SQLAInterface(models.SqlaTable)
|
||||
list_columns = [
|
||||
'table_link', 'database', 'sql_link', 'is_featured',
|
||||
@ -191,7 +194,7 @@ appbuilder.add_view(
|
||||
appbuilder.add_separator("Sources")
|
||||
|
||||
|
||||
class DruidClusterModelView(PanoramixModelView, DeleteMixin):
|
||||
class DruidClusterModelView(PanoramixModelView, DeleteMixin): # noqa
|
||||
datamodel = SQLAInterface(models.DruidCluster)
|
||||
add_columns = [
|
||||
'cluster_name',
|
||||
@ -209,7 +212,7 @@ appbuilder.add_view(
|
||||
category_icon='fa-database',)
|
||||
|
||||
|
||||
class SliceModelView(PanoramixModelView, DeleteMixin):
|
||||
class SliceModelView(PanoramixModelView, DeleteMixin): # noqa
|
||||
datamodel = SQLAInterface(models.Slice)
|
||||
can_add = False
|
||||
list_columns = [
|
||||
@ -237,7 +240,7 @@ appbuilder.add_view(
|
||||
category_icon='',)
|
||||
|
||||
|
||||
class DashboardModelView(PanoramixModelView, DeleteMixin):
|
||||
class DashboardModelView(PanoramixModelView, DeleteMixin): # noqa
|
||||
datamodel = SQLAInterface(models.Dashboard)
|
||||
list_columns = ['dashboard_link', 'created_by_', 'changed_on']
|
||||
order_columns = utils.list_minus(list_columns, ['created_by_'])
|
||||
@ -289,7 +292,7 @@ appbuilder.add_view(
|
||||
icon="fa-list-ol")
|
||||
|
||||
|
||||
class DruidDatasourceModelView(PanoramixModelView, DeleteMixin):
|
||||
class DruidDatasourceModelView(PanoramixModelView, DeleteMixin): # noqa
|
||||
datamodel = SQLAInterface(models.DruidDatasource)
|
||||
list_columns = [
|
||||
'datasource_link', 'cluster', 'owner',
|
||||
@ -363,6 +366,8 @@ appbuilder.add_view_no_menu(R)
|
||||
|
||||
class Panoramix(BaseView):
|
||||
|
||||
"""The base views for Panoramix!"""
|
||||
|
||||
@has_access
|
||||
@expose("/explore/<datasource_type>/<datasource_id>/")
|
||||
@expose("/datasource/<datasource_type>/<datasource_id>/") # Legacy url
|
||||
@ -502,6 +507,7 @@ class Panoramix(BaseView):
|
||||
@has_access
|
||||
@expose("/checkbox/<model_view>/<id_>/<attr>/<value>", methods=['GET'])
|
||||
def checkbox(self, model_view, id_, attr, value):
|
||||
"""endpoint for checking/unchecking any boolean in a sqla model"""
|
||||
model = None
|
||||
if model_view == 'TableColumnInlineView':
|
||||
model = models.TableColumn
|
||||
@ -518,6 +524,7 @@ class Panoramix(BaseView):
|
||||
@has_access
|
||||
@expose("/save_dash/<dashboard_id>/", methods=['GET', 'POST'])
|
||||
def save_dash(self, dashboard_id):
|
||||
"""Save a dashboard's metadata"""
|
||||
data = json.loads(request.form.get('data'))
|
||||
positions = data['positions']
|
||||
slice_ids = [int(d['slice_id']) for d in positions]
|
||||
@ -540,6 +547,7 @@ class Panoramix(BaseView):
|
||||
@has_access
|
||||
@expose("/testconn", methods=["POST", "GET"])
|
||||
def testconn(self):
|
||||
"""Tests a sqla connection"""
|
||||
try:
|
||||
uri = request.form.get('uri')
|
||||
engine = create_engine(uri)
|
||||
@ -554,6 +562,7 @@ class Panoramix(BaseView):
|
||||
@has_access
|
||||
@expose("/dashboard/<dashboard_id>/")
|
||||
def dashboard(self, dashboard_id):
|
||||
"""Server side rendering for a dashboard"""
|
||||
session = db.session()
|
||||
qry = session.query(models.Dashboard)
|
||||
if dashboard_id.isdigit():
|
||||
|
||||
@ -1,3 +1,8 @@
|
||||
"""
|
||||
This module contains the "Viz" objects that represent the backend of all
|
||||
the visualizations that Panoramix can render
|
||||
"""
|
||||
|
||||
from collections import OrderedDict, defaultdict
|
||||
from datetime import datetime, timedelta
|
||||
import json
|
||||
@ -19,6 +24,9 @@ config = app.config
|
||||
|
||||
|
||||
class BaseViz(object):
|
||||
|
||||
"""All visualizations derive this base class"""
|
||||
|
||||
viz_type = None
|
||||
verbose_name = "Base Viz"
|
||||
is_timeseries = False
|
||||
@ -110,12 +118,14 @@ class BaseViz(object):
|
||||
return href(d)
|
||||
|
||||
def get_df(self, query_obj=None):
|
||||
"""Returns a pandas dataframe based on the query object"""
|
||||
if not query_obj:
|
||||
query_obj = self.query_obj()
|
||||
|
||||
self.error_msg = ""
|
||||
self.results = None
|
||||
|
||||
# The datasource here can be different backend but the interface is common
|
||||
self.results = self.datasource.query(**query_obj)
|
||||
self.query = self.results.query
|
||||
df = self.results.df
|
||||
@ -138,6 +148,7 @@ class BaseViz(object):
|
||||
return FormFactory(self).get_form()
|
||||
|
||||
def query_filters(self):
|
||||
"""Processes the filters for the query"""
|
||||
form_data = self.form_data
|
||||
# Building filters
|
||||
filters = []
|
||||
@ -159,9 +170,7 @@ class BaseViz(object):
|
||||
return filters
|
||||
|
||||
def query_obj(self):
|
||||
"""
|
||||
Building a query object
|
||||
"""
|
||||
"""Building a query object"""
|
||||
form_data = self.form_data
|
||||
groupby = form_data.get("groupby") or []
|
||||
metrics = form_data.get("metrics") or ['count']
|
||||
@ -387,10 +396,12 @@ class MarkupViz(BaseViz):
|
||||
|
||||
|
||||
class WordCloudViz(BaseViz):
|
||||
"""
|
||||
Integration with the nice library at:
|
||||
|
||||
"""Integration with the nice library at:
|
||||
|
||||
https://github.com/jasondavies/d3-cloud
|
||||
"""
|
||||
|
||||
viz_type = "word_cloud"
|
||||
verbose_name = "Word Cloud"
|
||||
is_timeseries = False
|
||||
@ -421,12 +432,18 @@ class WordCloudViz(BaseViz):
|
||||
|
||||
|
||||
class NVD3Viz(BaseViz):
|
||||
|
||||
"""Base class for all nvd3 vizs"""
|
||||
|
||||
viz_type = None
|
||||
verbose_name = "Base NVD3 Viz"
|
||||
is_timeseries = False
|
||||
|
||||
|
||||
class BubbleViz(NVD3Viz):
|
||||
|
||||
"""Based on the NVD3 bubble chart"""
|
||||
|
||||
viz_type = "bubble"
|
||||
verbose_name = "Bubble Chart"
|
||||
is_timeseries = False
|
||||
|
||||
Loading…
Reference in New Issue
Block a user