208 lines
7.0 KiB
Python
208 lines
7.0 KiB
Python
import re
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from datetime import datetime
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from moto.core import BaseBackend, BackendDict
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from moto.core.utils import iso_8601_datetime_without_milliseconds
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from moto.moto_api._internal import mock_random as random
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from moto.redshiftdata.exceptions import ValidationException, ResourceNotFoundException
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class Statement:
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def __init__(
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self,
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cluster_identifier,
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database,
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db_user,
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query_parameters,
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query_string,
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secret_arn,
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):
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now = iso_8601_datetime_without_milliseconds(datetime.now())
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self.id = str(random.uuid4())
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self.cluster_identifier = cluster_identifier
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self.created_at = now
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self.database = database
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self.db_user = db_user
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self.duration = 0
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self.has_result_set = False
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self.query_parameters = query_parameters
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self.query_string = query_string
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self.redshift_pid = random.randint(0, 99999)
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self.redshift_query_id = random.randint(0, 99999)
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self.result_rows = -1
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self.result_size = -1
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self.secret_arn = secret_arn
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self.status = "STARTED"
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self.sub_statements = []
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self.updated_at = now
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def __iter__(self):
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yield "Id", self.id
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yield "ClusterIdentifier", self.cluster_identifier
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yield "CreatedAt", self.created_at
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yield "Database", self.database
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yield "DbUser", self.db_user
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yield "Duration", self.duration
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yield "HasResultSet", self.has_result_set
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yield "QueryParameters", self.query_parameters
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yield "QueryString", self.query_string
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yield "RedshiftPid", self.redshift_pid
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yield "RedshiftQueryId", self.redshift_query_id
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yield "ResultRows", self.result_rows
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yield "ResultSize", self.result_size
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yield "SecretArn", self.secret_arn
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yield "Status", self.status
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yield "SubStatements", self.sub_statements
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yield "UpdatedAt", self.updated_at
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class StatementResult:
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def __init__(self, column_metadata, records, total_number_rows, next_token=None):
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self.column_metadata = column_metadata
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self.records = records
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self.total_number_rows = total_number_rows
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self.next_token = next_token
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def __iter__(self):
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yield "ColumnMetadata", self.column_metadata
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yield "Records", self.records
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yield "TotalNumberRows", self.total_number_rows
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yield "NextToken", self.next_token
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class ColumnMetadata:
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def __init__(self, column_default, is_case_sensitive, is_signed, name, nullable):
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self.column_default = column_default
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self.is_case_sensitive = is_case_sensitive
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self.is_signed = is_signed
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self.name = name
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self.nullable = nullable
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def __iter__(self):
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yield "columnDefault", self.column_default
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yield "isCaseSensitive", self.is_case_sensitive
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yield "isSigned", self.is_signed
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yield "name", self.name
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yield "nullable", self.nullable
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class Record:
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def __init__(self, **kwargs):
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self.kwargs = kwargs
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def __iter__(self):
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if "long_value" in self.kwargs:
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yield "longValue", self.kwargs["long_value"]
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elif "string_value" in self.kwargs:
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yield "stringValue", self.kwargs["string_value"]
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class RedshiftDataAPIServiceBackend(BaseBackend):
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def __init__(self, region_name, account_id):
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super().__init__(region_name, account_id)
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self.statements = {}
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def cancel_statement(self, statement_id):
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_validate_uuid(statement_id)
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try:
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# Statement exists
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statement = self.statements[statement_id]
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if statement.status != "STARTED":
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raise ValidationException(
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"Could not cancel a query that is already in %s state with ID: %s"
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% (statement.status, statement_id)
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)
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statement.status = "ABORTED"
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self.statements[statement_id] = statement
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except KeyError:
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# Statement does not exist.
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raise ResourceNotFoundException()
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return True
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def describe_statement(self, statement_id):
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_validate_uuid(statement_id)
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try:
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# Statement exists
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return self.statements[statement_id]
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except KeyError:
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# Statement does not exist.
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raise ResourceNotFoundException()
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def execute_statement(
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self, cluster_identifier, database, db_user, parameters, secret_arn, sql
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):
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"""
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Runs an SQL statement
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Validation of parameters is very limited because there is no redshift integration
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"""
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statement = Statement(
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cluster_identifier=cluster_identifier,
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database=database,
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db_user=db_user,
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query_parameters=parameters,
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query_string=sql,
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secret_arn=secret_arn,
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)
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self.statements[statement.id] = statement
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return statement
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def get_statement_result(self, statement_id):
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"""
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Return static statement result
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StatementResult is the result of the SQL query "sql" passed as parameter when calling "execute_statement"
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As such, it cannot be mocked
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"""
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_validate_uuid(statement_id)
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if statement_id not in self.statements:
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raise ResourceNotFoundException()
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return StatementResult(
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[
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dict(ColumnMetadata(None, False, True, "Number", False)),
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dict(ColumnMetadata(None, True, False, "Street", False)),
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dict(ColumnMetadata(None, True, False, "City", False)),
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],
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[
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[
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dict(Record(long_value=10)),
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dict(Record(string_value="Alpha st")),
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dict(Record(string_value="Vancouver")),
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],
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[
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dict(Record(long_value=50)),
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dict(Record(string_value="Beta st")),
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dict(Record(string_value="Toronto")),
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],
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[
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dict(Record(long_value=100)),
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dict(Record(string_value="Gamma av")),
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dict(Record(string_value="Seattle")),
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],
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],
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3,
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)
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def _validate_uuid(uuid):
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match = re.search(r"^[a-z0-9]{8}(-[a-z0-9]{4}){3}-[a-z0-9]{12}(:\d+)?$", uuid)
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if not match:
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raise ValidationException(
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"id must satisfy regex pattern: ^[a-z0-9]{8}(-[a-z0-9]{4}){3}-[a-z0-9]{12}(:\\d+)?$"
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)
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# For unknown reasons I cannot use the service name "redshift-data" as I should
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# It seems boto3 is unable to get the list of available regions for "redshift-data"
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# See code here https://github.com/getmoto/moto/blob/master/moto/core/utils.py#L407
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# sess.get_available_regions("redshift-data") returns an empty list
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# Then I use the service redshift since they share the same regions
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# See https://docs.aws.amazon.com/general/latest/gr/redshift-service.html
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redshiftdata_backends = BackendDict(RedshiftDataAPIServiceBackend, "redshift")
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