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Add Select logic to Delta Append in PCDM Destination #461

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Merged
merged 4 commits into from
Aug 25, 2023
Merged

Add Select logic to Delta Append in PCDM Destination #461

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edc9869
Updates for packages
GBBBAS Aug 24, 2023
b49c70c
Add filter on Fields for Append
GBBBAS Aug 24, 2023
71329db
Merge branch 'develop' into feature/query_builder_import
GBBBAS Aug 24, 2023
f4a300c
Update to mkdocstrings
GBBBAS Aug 24, 2023
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40 changes: 23 additions & 17 deletions src/sdk/python/rtdip_sdk/pipelines/destinations/spark/pcdm_to_delta.py
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,7 @@ class SparkPCDMToDeltaDestination(DestinationInterface):
data (DataFrame): Dataframe to be merged into a Delta Table
options (dict): Options that can be specified for a Delta Table read operation (See Attributes table below). Further information on the options is available for [batch](https://docs.delta.io/latest/delta-batch.html#write-to-a-table){ target="_blank" } and [streaming](https://docs.delta.io/latest/delta-streaming.html#delta-table-as-a-sink){ target="_blank" }.
destination_float (str): Either the name of the Hive Metastore or Unity Catalog Delta Table **or** the path to the Delta table to store float values.
destination_string (str): Either the name of the Hive Metastore or Unity Catalog Delta Table **or** the path to the Delta table to store string values.
destination_string (Optional str): Either the name of the Hive Metastore or Unity Catalog Delta Table **or** the path to the Delta table to store string values.
destination_integer (Optional str): Either the name of the Hive Metastore or Unity Catalog Delta Table **or** the path to the Delta table to store integer values
mode (str): Method of writing to Delta Table - append/overwrite (batch), append/complete (stream)
trigger (str): Frequency of the write operation. Specify "availableNow" to execute a trigger once, otherwise specify a time period such as "30 seconds", "5 minutes"
Expand Down Expand Up @@ -77,7 +77,7 @@ def __init__(
data: DataFrame,
options: dict,
destination_float: str,
destination_string: str,
destination_string: str = None,
destination_integer: str = None,
mode: str = None,
trigger="10 seconds",
Expand Down Expand Up @@ -241,8 +241,9 @@ def _write_data_by_type(self, df: DataFrame):
)
self._write_delta_batch(float_df, self.destination_float)

string_df = df.filter(ValueTypeConstants.STRING_VALUE)
self._write_delta_batch(string_df, self.destination_string)
if self.destination_string != None:
string_df = df.filter(ValueTypeConstants.STRING_VALUE)
self._write_delta_batch(string_df, self.destination_string)

if self.destination_integer != None:
integer_df = df.filter(ValueTypeConstants.INTEGER_VALUE).withColumn(
Expand Down Expand Up @@ -297,9 +298,9 @@ def write_stream(self):
)
else:
delta_float = SparkDeltaDestination(
data=self.data.filter(ValueTypeConstants.FLOAT_VALUE).withColumn(
"Value", col("Value").cast("float")
),
data=self.data.select("TagName", "EventTime", "Status", "Value")
.filter(ValueTypeConstants.FLOAT_VALUE)
.withColumn("Value", col("Value").cast("float")),
destination=self.destination_float,
options=self.options,
mode=self.mode,
Expand All @@ -309,20 +310,25 @@ def write_stream(self):

delta_float.write_stream()

delta_string = SparkDeltaDestination(
data=self.data.filter(ValueTypeConstants.STRING_VALUE),
destination=self.destination_string,
options=self.options,
mode=self.mode,
trigger=self.trigger,
query_name=self.query_name + "_string",
)
if self.destination_string != None:
delta_string = SparkDeltaDestination(
data=self.data.select(
"TagName", "EventTime", "Status", "Value"
).filter(ValueTypeConstants.STRING_VALUE),
destination=self.destination_string,
options=self.options,
mode=self.mode,
trigger=self.trigger,
query_name=self.query_name + "_string",
)

delta_string.write_stream()
delta_string.write_stream()

if self.destination_integer != None:
delta_integer = SparkDeltaDestination(
data=self.data.filter(ValueTypeConstants.INTEGER_VALUE),
data=self.data.select(
"TagName", "EventTime", "Status", "Value"
).filter(ValueTypeConstants.INTEGER_VALUE),
destination=self.destination_integer,
options=self.options,
mode=self.mode,
Expand Down