# Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you 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. # pylint: disable=invalid-name from __future__ import annotations import logging from datetime import datetime, timedelta from pprint import pformat from typing import Any, Dict, List, NamedTuple, Optional, TYPE_CHECKING from flask_babel import gettext as _ from pandas import DataFrame from superset.common.chart_data import ChartDataResultType from superset.exceptions import ( QueryClauseValidationException, QueryObjectValidationError, ) from superset.sql_parse import validate_filter_clause from superset.typing import Column, Metric, OrderBy from superset.utils import pandas_postprocessing from superset.utils.core import ( DTTM_ALIAS, find_duplicates, get_column_names, get_metric_names, is_adhoc_metric, json_int_dttm_ser, QueryObjectFilterClause, ) from superset.utils.date_parser import parse_human_timedelta from superset.utils.hashing import md5_sha_from_dict if TYPE_CHECKING: from superset.connectors.base.models import BaseDatasource logger = logging.getLogger(__name__) # TODO: Type Metrics dictionary with TypedDict when it becomes a vanilla python type # https://github.com/python/mypy/issues/5288 class DeprecatedField(NamedTuple): old_name: str new_name: str DEPRECATED_FIELDS = ( DeprecatedField(old_name="granularity_sqla", new_name="granularity"), DeprecatedField(old_name="groupby", new_name="columns"), DeprecatedField(old_name="timeseries_limit", new_name="series_limit"), DeprecatedField(old_name="timeseries_limit_metric", new_name="series_limit_metric"), ) DEPRECATED_EXTRAS_FIELDS = ( DeprecatedField(old_name="where", new_name="where"), DeprecatedField(old_name="having", new_name="having"), DeprecatedField(old_name="having_filters", new_name="having_druid"), DeprecatedField(old_name="druid_time_origin", new_name="druid_time_origin"), ) class QueryObject: # pylint: disable=too-many-instance-attributes """ The query object's schema matches the interfaces of DB connectors like sqla and druid. The query objects are constructed on the client. """ annotation_layers: List[Dict[str, Any]] applied_time_extras: Dict[str, str] apply_fetch_values_predicate: bool columns: List[Column] datasource: Optional[BaseDatasource] extras: Dict[str, Any] filter: List[QueryObjectFilterClause] from_dttm: Optional[datetime] granularity: Optional[str] inner_from_dttm: Optional[datetime] inner_to_dttm: Optional[datetime] is_rowcount: bool is_timeseries: bool metrics: Optional[List[Metric]] order_desc: bool orderby: List[OrderBy] post_processing: List[Dict[str, Any]] result_type: Optional[ChartDataResultType] row_limit: int row_offset: int series_columns: List[Column] series_limit: int series_limit_metric: Optional[Metric] time_offsets: List[str] time_shift: Optional[timedelta] time_range: Optional[str] to_dttm: Optional[datetime] def __init__( # pylint: disable=too-many-locals self, *, annotation_layers: Optional[List[Dict[str, Any]]] = None, applied_time_extras: Optional[Dict[str, str]] = None, apply_fetch_values_predicate: bool = False, columns: Optional[List[Column]] = None, datasource: Optional[BaseDatasource] = None, extras: Optional[Dict[str, Any]] = None, filters: Optional[List[QueryObjectFilterClause]] = None, granularity: Optional[str] = None, is_rowcount: bool = False, is_timeseries: Optional[bool] = None, metrics: Optional[List[Metric]] = None, order_desc: bool = True, orderby: Optional[List[OrderBy]] = None, post_processing: Optional[List[Optional[Dict[str, Any]]]] = None, row_limit: int, row_offset: Optional[int] = None, series_columns: Optional[List[Column]] = None, series_limit: int = 0, series_limit_metric: Optional[Metric] = None, time_range: Optional[str] = None, time_shift: Optional[str] = None, **kwargs: Any, ): self._set_annotation_layers(annotation_layers) self.applied_time_extras = applied_time_extras or {} self.apply_fetch_values_predicate = apply_fetch_values_predicate or False self.columns = columns or [] self.datasource = datasource self.extras = extras or {} self.filter = filters or [] self.granularity = granularity self.is_rowcount = is_rowcount self._set_is_timeseries(is_timeseries) self._set_metrics(metrics) self.order_desc = order_desc self.orderby = orderby or [] self._set_post_processing(post_processing) self.row_limit = row_limit self.row_offset = row_offset or 0 self._init_series_columns(series_columns, metrics, is_timeseries) self.series_limit = series_limit self.series_limit_metric = series_limit_metric self.time_range = time_range self.time_shift = parse_human_timedelta(time_shift) self.from_dttm = kwargs.get("from_dttm") self.to_dttm = kwargs.get("to_dttm") self.result_type = kwargs.get("result_type") self.time_offsets = kwargs.get("time_offsets", []) self.inner_from_dttm = kwargs.get("inner_from_dttm") self.inner_to_dttm = kwargs.get("inner_to_dttm") self._rename_deprecated_fields(kwargs) self._move_deprecated_extra_fields(kwargs) def _set_annotation_layers( self, annotation_layers: Optional[List[Dict[str, Any]]] ) -> None: self.annotation_layers = [ layer for layer in (annotation_layers or []) # formula annotations don't affect the payload, hence can be dropped if layer["annotationType"] != "FORMULA" ] def _set_is_timeseries(self, is_timeseries: Optional[bool]) -> None: # is_timeseries is True if time column is in either columns or groupby # (both are dimensions) self.is_timeseries = ( is_timeseries if is_timeseries is not None else DTTM_ALIAS in self.columns ) def _set_metrics(self, metrics: Optional[List[Metric]] = None) -> None: # Support metric reference/definition in the format of # 1. 'metric_name' - name of predefined metric # 2. { label: 'label_name' } - legacy format for a predefined metric # 3. { expressionType: 'SIMPLE' | 'SQL', ... } - adhoc metric def is_str_or_adhoc(metric: Metric) -> bool: return isinstance(metric, str) or is_adhoc_metric(metric) self.metrics = metrics and [ x if is_str_or_adhoc(x) else x["label"] for x in metrics # type: ignore ] def _set_post_processing( self, post_processing: Optional[List[Optional[Dict[str, Any]]]] ) -> None: post_processing = post_processing or [] self.post_processing = [post_proc for post_proc in post_processing if post_proc] def _init_series_columns( self, series_columns: Optional[List[Column]], metrics: Optional[List[Metric]], is_timeseries: Optional[bool], ) -> None: if series_columns: self.series_columns = series_columns elif is_timeseries and metrics: self.series_columns = self.columns else: self.series_columns = [] def _rename_deprecated_fields(self, kwargs: Dict[str, Any]) -> None: # rename deprecated fields for field in DEPRECATED_FIELDS: if field.old_name in kwargs: logger.warning( "The field `%s` is deprecated, please use `%s` instead.", field.old_name, field.new_name, ) value = kwargs[field.old_name] if value: if hasattr(self, field.new_name): logger.warning( "The field `%s` is already populated, " "replacing value with contents from `%s`.", field.new_name, field.old_name, ) setattr(self, field.new_name, value) def _move_deprecated_extra_fields(self, kwargs: Dict[str, Any]) -> None: # move deprecated extras fields to extras for field in DEPRECATED_EXTRAS_FIELDS: if field.old_name in kwargs: logger.warning( "The field `%s` is deprecated and should " "be passed to `extras` via the `%s` property.", field.old_name, field.new_name, ) value = kwargs[field.old_name] if value: if hasattr(self.extras, field.new_name): logger.warning( "The field `%s` is already populated in " "`extras`, replacing value with contents " "from `%s`.", field.new_name, field.old_name, ) self.extras[field.new_name] = value @property def metric_names(self) -> List[str]: """Return metrics names (labels), coerce adhoc metrics to strings.""" return get_metric_names(self.metrics or []) @property def column_names(self) -> List[str]: """Return column names (labels). Gives priority to groupbys if both groupbys and metrics are non-empty, otherwise returns column labels.""" return get_column_names(self.columns) def validate( self, raise_exceptions: Optional[bool] = True ) -> Optional[QueryObjectValidationError]: """Validate query object""" try: self._validate_there_are_no_missing_series() self._validate_no_have_duplicate_labels() self._validate_filters() return None except QueryObjectValidationError as ex: if raise_exceptions: raise ex return ex def _validate_no_have_duplicate_labels(self) -> None: all_labels = self.metric_names + self.column_names if len(set(all_labels)) < len(all_labels): dup_labels = find_duplicates(all_labels) raise QueryObjectValidationError( _( "Duplicate column/metric labels: %(labels)s. Please make " "sure all columns and metrics have a unique label.", labels=", ".join(f'"{x}"' for x in dup_labels), ) ) def _validate_filters(self) -> None: for param in ("where", "having"): clause = self.extras.get(param) if clause: try: validate_filter_clause(clause) except QueryClauseValidationException as ex: raise QueryObjectValidationError(ex.message) from ex def _validate_there_are_no_missing_series(self) -> None: missing_series = [col for col in self.series_columns if col not in self.columns] if missing_series: raise QueryObjectValidationError( _( "The following entries in `series_columns` are missing " "in `columns`: %(columns)s. ", columns=", ".join(f'"{x}"' for x in missing_series), ) ) def to_dict(self) -> Dict[str, Any]: query_object_dict = { "apply_fetch_values_predicate": self.apply_fetch_values_predicate, "columns": self.columns, "extras": self.extras, "filter": self.filter, "from_dttm": self.from_dttm, "granularity": self.granularity, "inner_from_dttm": self.inner_from_dttm, "inner_to_dttm": self.inner_to_dttm, "is_rowcount": self.is_rowcount, "is_timeseries": self.is_timeseries, "metrics": self.metrics, "order_desc": self.order_desc, "orderby": self.orderby, "row_limit": self.row_limit, "row_offset": self.row_offset, "series_columns": self.series_columns, "series_limit": self.series_limit, "series_limit_metric": self.series_limit_metric, "to_dttm": self.to_dttm, } return query_object_dict def cache_key(self, **extra: Any) -> str: """ The cache key is made out of the key/values from to_dict(), plus any other key/values in `extra` We remove datetime bounds that are hard values, and replace them with the use-provided inputs to bounds, which may be time-relative (as in "5 days ago" or "now"). """ cache_dict = self.to_dict() cache_dict.update(extra) # TODO: the below KVs can all be cleaned up and moved to `to_dict()` at some # predetermined point in time when orgs are aware that the previously # chached results will be invalidated. if not self.apply_fetch_values_predicate: del cache_dict["apply_fetch_values_predicate"] if self.datasource: cache_dict["datasource"] = self.datasource.uid if self.result_type: cache_dict["result_type"] = self.result_type if self.time_range: cache_dict["time_range"] = self.time_range if self.post_processing: cache_dict["post_processing"] = self.post_processing if self.time_offsets: cache_dict["time_offsets"] = self.time_offsets for k in ["from_dttm", "to_dttm"]: del cache_dict[k] annotation_fields = [ "annotationType", "descriptionColumns", "intervalEndColumn", "name", "overrides", "sourceType", "timeColumn", "titleColumn", "value", ] annotation_layers = [ {field: layer[field] for field in annotation_fields if field in layer} for layer in self.annotation_layers ] # only add to key if there are annotations present that affect the payload if annotation_layers: cache_dict["annotation_layers"] = annotation_layers return md5_sha_from_dict(cache_dict, default=json_int_dttm_ser, ignore_nan=True) def exec_post_processing(self, df: DataFrame) -> DataFrame: """ Perform post processing operations on DataFrame. :param df: DataFrame returned from database model. :return: new DataFrame to which all post processing operations have been applied :raises QueryObjectValidationError: If the post processing operation is incorrect """ logger.debug("post_processing: %s", pformat(self.post_processing)) for post_process in self.post_processing: operation = post_process.get("operation") if not operation: raise QueryObjectValidationError( _("`operation` property of post processing object undefined") ) if not hasattr(pandas_postprocessing, operation): raise QueryObjectValidationError( _( "Unsupported post processing operation: %(operation)s", type=operation, ) ) options = post_process.get("options", {}) df = getattr(pandas_postprocessing, operation)(df, **options) return df