SUBHADEEP ROY
03/12/2024, 3:08 PMScout
03/12/2024, 3:08 PMMyAssetConfig
class, which inherits from Config
, specifies a schema for the asset's configuration. This schema includes a single field, person_name
, which is of type str
. The greeting
asset function takes a config
parameter of type MyAssetConfig
. Inside the function, you're using the person_name
from the config to return a greeting string. However, there's a small syntax error in your code snippet. The arrow (->
) should be replaced with the Python type hint arrow (->
). Here's the corrected code: python from dagster import asset, Config class MyAssetConfig(Config): person_name: str @asset def greeting(config: MyAssetConfig) -> str: return f"hello {config.person_name}"
With this asset definition, you can provide a configuration value for person_name
when you run the asset, and it will output a greeting message using the provided name. The configuration can be set at runtime, for example, through the Dagster UI's Launchpad or via a run configuration file.SUBHADEEP ROY
03/12/2024, 3:09 PMScout
03/12/2024, 3:09 PMschema_list_for_query
as a parameter to the dwh_metadata_creation
asset within the all_assets_job
, you can use the OpExecutionContext
to access run-time configuration. However, the code you've provided does not show how schema_list_for_query
is intended to be used within the dwh_metadata_creation
asset. If schema_list_for_query
is meant to be a dynamic configuration that changes per execution, you would typically pass it through the run config when executing the job.
Here's a general approach to pass parameters to an asset via run config:
1. Define a config schema for the asset that requires the parameter.
2. When executing the job, provide the run config with the necessary parameters.
However, in the code you've provided, there is no config schema defined for the assets, and the assets do not take any parameters directly. To pass schema_list_for_query
to dwh_metadata_creation
, you would need to modify the asset to accept a config parameter and then provide that config when you execute the job.
Here's a simplified example of how you might define a config schema for an asset and then execute the job with a config:
python
from dagster import asset, Field, String, job, repository, execute_job
# Define a config schema for the asset
@asset(config_schema={"schema_list_for_query": Field(String)})
def dwh_metadata_creation(context):
schema_list_for_query = context.op_config["schema_list_for_query"]
# Use schema_list_for_query in your asset logic
...
# Define the job that includes the asset
@job
def all_assets_job():
dwh_metadata_creation()
# Repository definition that includes the job
@repository
def my_repo():
return [all_assets_job]
# Execute the job with the config
if __name__ == "__main__":
result = execute_job(
job=my_repo.get_job("all_assets_job"),
run_config={
"ops": {
"dwh_metadata_creation": {
"config": {
"schema_list_for_query": "your_schema_list_here"
}
}
}
}
)
In this example, dwh_metadata_creation
is defined with a config schema that expects a schema_list_for_query
parameter. When executing the job, you provide the schema_list_for_query
value in the run config under the ops
key, which corresponds to the asset's name.
Please note that the actual implementation may vary based on how schema_list_for_query
is used within your asset and the structure of your project. You would need to adjust the example to fit your specific use case. If schema_list_for_query
is not meant to be part of the asset's config, you would need to find another way to pass it to the asset, such as through resources or by modifying the asset's logic to rScout
03/12/2024, 3:10 PMSUBHADEEP ROY
03/12/2024, 3:14 PMScout
03/12/2024, 3:14 PMschema_list_for_query
as a parameter to the dwh_metadata_creation
asset, you will need to modify the asset to accept a configuration parameter. Here's how you can do it:
1. Define a config schema for the dwh_metadata_creation
asset.
2. Modify the dwh_metadata_creation
asset to access the config parameter.
3. Provide the config parameter when executing the job.
Here's how you can implement these steps:
Step 1: Define a config schema for the dwh_metadata_creation
asset.
python
from dagster import Field, String
@asset(
config_schema={"schema_list_for_query": Field(String)},
resource_defs=patch_cloud_storage_selector(
{
"db_obj": metadata_resource,
"dw_obj": dw_obj,
}
)
)
def dwh_metadata_creation(context, ...): # other parameters
schema_list_for_query = context.op_config["schema_list_for_query"]
# Use schema_list_for_query in your asset logic
...
Step 2: Modify the dwh_metadata_creation
asset to access the config parameter.
You've already added the line to access the config parameter in the asset definition above. Now you can use schema_list_for_query
within your asset logic.
Step 3: Provide the config parameter when executing the job.
When you execute the job, you need to provide the schema_list_for_query
parameter in the run config. Since you're using execute_in_process
, you can pass the run config directly as an argument:
python
def crawler_asset_job(p_in_db_obj, l_db_schema, schema_list_for_query):
try:
db_obj = p_in_db_obj
dir_path = os.path.dirname(os.path.realpath(__file__))
drop_DWH_META_query = f"drop table if exists {l_db_schema}.DWH_METADATA;"
db_obj.execute_query(drop_DWH_META_query)
# Asset job triggers with run config
result = my_repo.get_job("all_assets_job").execute_in_process(
run_config={
"ops": {
"dwh_metadata_creation": {
"config": {
"schema_list_for_query": schema_list_for_query
}
}
}
}
)
if not result.success:
raise Exception("Asset job execution failed")
return result
except Exception as e:
print(f"Asset job execution failed: {e}")
Make sure to replace ...
with the actual parameters that dwh_metadata_creation
takes, if any.
Please note that the execute_in_process
method is typically used for testing and development. For production scenarios, you would use the Dagster instance to run the job, and the run config would be provided through the Dagster UI or a YAML configuration file.
Also, ensure that the schema_list_for_query
is a string thScout
03/12/2024, 3:14 PMField
type accordingly.SUBHADEEP ROY
03/12/2024, 3:39 PMScout
03/12/2024, 3:39 PMschema_list_for_query
is a tuple of strings, you can represent it as a list of strings in the config schema. In Dagster, you would use Field(List[str])
to represent a list of strings. However, since you mentioned the format ('abc', 'asd')
, which is a Python tuple, you'll need to handle it as a list in the config and then convert it to a tuple within your asset if necessary. Here's how you can define the config schema for a list of strings: python from dagster import Field, List, String @asset( config_schema={"schema_list_for_query": Field(List[String])}, resource_defs=patch_cloud_storage_selector( { "db_obj": metadata_resource, "dw_obj": dw_obj, } ) ) def dwh_metadata_creation(context, ...): # other parameters schema_list_for_query = tuple(context.op_config["schema_list_for_query"]) # Now schema_list_for_query is a tuple, and you can use it in your asset logic ...
When you execute the job, you will provide the list of strings in the run config: python result = my_repo.get_job("all_assets_job").execute_in_process( run_config={ "ops": { "dwh_metadata_creation": { "config": { "schema_list_for_query": ["abc", "asd"] # List of strings } } } } )
In the asset function, context.op_config["schema_list_for_query"]
will retrieve the list, and tuple(...)
will convert it to a tuple, which matches the format you specified. Make sure to replace ...
with the actual parameters that dwh_metadata_creation
takes, if any.SUBHADEEP ROY
03/12/2024, 3:43 PMScout
03/12/2024, 3:43 PMList
from the typing
module in the context of Dagster config. Instead, you should use a Python list (e.g., [str]
) or dagster.Array
(e.g., Array(str)
) for defining a list of items in the config schema. Here's how you can define the config schema using a Python list for a list of strings: python from dagster import Field, Array, String @asset( config_schema={"schema_list_for_query": Field(Array(String))}, resource_defs=patch_cloud_storage_selector( { "db_obj": metadata_resource, "dw_obj": dw_obj, } ) ) def dwh_metadata_creation(context, ...): # other parameters schema_list_for_query = tuple(context.op_config["schema_list_for_query"]) # Now schema_list_for_query is a tuple, and you can use it in your asset logic ...
When you execute the job, you will provide the list of strings in the run config as before: python result = my_repo.get_job("all_assets_job").execute_in_process( run_config={ "ops": { "dwh_metadata_creation": { "config": { "schema_list_for_query": ["abc", "asd"] # List of strings } } } } )
This should resolve the error you're encountering. The Array
type is used to define a list of items in Dagster's config system, and String
specifies that each item in the array is a string. The Field
wrapper is used to define a field in the config schema. When you retrieve the config value in your asset, it will be a list, which you can then convert to a tuple if needed.SUBHADEEP ROY
03/12/2024, 3:52 PMScout
03/12/2024, 3:52 PMScout
03/12/2024, 3:53 PMschema_list_for_query
is expected to be a string that represents a tuple, such as "(abc, asd)"
, you can define it as a single string in the config schema and then parse it as needed within your asset. Here's how you can define the config schema using a single string: python from dagster import Field, String @asset( config_schema={"schema_list_for_query": Field(String)}, resource_defs=patch_cloud_storage_selector( { "db_obj": metadata_resource, "dw_obj": dw_obj, } ) ) def dwh_metadata_creation(context, ...): # other parameters # Retrieve the string from the config schema_list_for_query_str = context.op_config["schema_list_for_query"] # Parse the string to get the tuple, assuming the string is formatted like "(abc, asd)" schema_list_for_query = eval(schema_list_for_query_str) # Now schema_list_for_query is a tuple, and you can use it in your asset logic ...
When you execute the job, you will provide the string that represents a tuple in the run config: python result = my_repo.get_job("all_assets_job").execute_in_process( run_config={ "ops": { "dwh_metadata_creation": { "config": { "schema_list_for_query": "('abc', 'asd')" # String that represents a tuple } } } } )
Please note that using eval
can be risky if the input is not controlled or sanitized, as it will execute arbitrary code. If you have control over the format of schema_list_for_query
, ensure it is always in a safe, expected format. If the input comes from an untrusted source, consider using a safer parsing method to convert the string to a tuple.SUBHADEEP ROY
03/12/2024, 3:58 PMScout
03/12/2024, 3:58 PMschema_list_for_query
config field, but it's receiving a tuple instead. This suggests that the value provided in the run config is being interpreted as a tuple rather than a string. To resolve this issue, ensure that the value you provide for schema_list_for_query
in the run config is a string. Specifically, you should ensure that the value is enclosed in quotes to be treated as a string literal in the YAML or JSON format of the run config. Here's how you should format the run config: python result = my_repo.get_job("all_assets_job").execute_in_process( run_config={ "ops": { "dwh_metadata_creation": { "config": { # Ensure the value is a string literal, not a tuple "schema_list_for_query": "('abc', 'bcd')" } } } } )
In this run config, the value for schema_list_for_query
is a string that looks like a tuple, but it's still a string because it's enclosed in quotes. This should match the expected type "String" in the config schema. If you continue to encounter issues, please double-check that the run config is being provided correctly in the format expected by Dagster, and that no additional parsing or transformation is occurring that might change the string into a tuple before it's passed to Dagster.SUBHADEEP ROY
03/12/2024, 4:32 PMScout
03/12/2024, 4:32 PMschema_list_for_query
that is a tuple and you want to pass it as a string in the run config, you need to convert the tuple to a string that represents the tuple. You can do this by using the str()
function in Python, which will give you a string representation of the tuple. Here's how you can convert the tuple to a string and use it in the run config: python # Your tuple schema_list_for_query = ('abc', 'bcd') # Convert the tuple to a string that represents the tuple schema_list_for_query_str = str(schema_list_for_query) # Now pass the string representation to the run config result = my_repo.get_job("all_assets_job").execute_in_process( run_config={ "ops": { "dwh_metadata_creation": { "config": { # Pass the string representation of the tuple "schema_list_for_query": schema_list_for_query_str } } } } )
In this code, schema_list_for_query_str
will be a string that looks like "('abc', 'bcd')"
. When you pass this string to the run config, it should not error out because it matches the expected type "String" in the config schema. Make sure that when you define the config schema for the dwh_metadata_creation
asset, you expect a string: python @asset( config_schema={"schema_list_for_query": Field(String)}, # ... other parameters ) def dwh_metadata_creation(context, ...): # ... asset implementation
And within the asset, if you need to use it as a tuple, you can safely convert it back: python def dwh_metadata_creation(context, ...): schema_list_for_query_str = context.op_config["schema_list_for_query"] schema_list_for_query = eval(schema_list_for_query_str) # Now schema_list_for_query is a tuple again # ... use the tuple in your asset logic
Please be cautious with the use of eval()
, as it can execute arbitrary code. It should only be used if you are certain of the safety of the input. If the input is coming from an untrusted source, consider using a safer parsing method.SUBHADEEP ROY
03/13/2024, 2:56 PMall_assets_job
and likely performs a task related to handling all assets.
"""
show_schema_asset()
show_table_asset()
show_schema_asset()
show_table_asset()
show_col_asset()
show_view_asset()
show_keys_asset()
show_pk_keys_asset()
copy_dmax_tables_to_rds()
dwh_metadata_creation(
show_schema_asset(),
show_table_asset(),
show_col_asset(),
show_view_asset(),
show_keys_asset(),
show_pk_keys_asset(),
copy_dmax_tables_to_rds(),
)
rds_metadata_creation()
insert_delta_asset(
dwh_metadata_creation(
show_schema_asset(),
show_table_asset(),
show_col_asset(),
show_view_asset(),
show_keys_asset(),
show_pk_keys_asset(),
copy_dmax_tables_to_rds(),
),
rds_metadata_creation(),
)
delete_delta_asset(
dwh_metadata_creation(
show_schema_asset(),
show_table_asset(),
show_col_asset(),
show_view_asset(),
show_keys_asset(),
show_pk_keys_asset(),
copy_dmax_tables_to_rds(),
),
rds_metadata_creation(),
)
update_delta_asset(
dwh_metadata_creation(
show_schema_asset(),
show_table_asset(),
show_col_asset(),
show_view_asset(),
show_keys_asset(),
show_pk_keys_asset(),
copy_dmax_tables_to_rds(),
),
rds_metadata_creation(),
)
# Repository definition that includes the assets and the job
@repository
def my_repo():
return [
show_schema_asset,
show_table_asset,
show_col_asset,
show_view_asset,
show_keys_asset,
show_pk_keys_asset,
copy_dmax_tables_to_rds,
dwh_metadata_creation,
rds_metadata_creation,
insert_delta_asset,
delete_delta_asset,
update_delta_asset,
all_assets_job,
]
# Execute the job in process
def crawler_asset_job(p_in_db_obj, l_db_schema, schema_list_for_query):
try:
db_obj = p_in_db_obj
dir_path = os.path.dirname(os.path.realpath(file))
drop_DWH_META_query = """ drop table if exists {schema}.DWH_METADATA;""".format(
schema=l_db_schema
)
db_obj.execute_query(drop_DWH_META_query)
# Asset job triggers
schema_list_for_query = f"('int_call_act','dwh_call_act')"
schema_list_for_query_str = str(schema_list_for_query)
result = my_repo.get_job("all_assets_job").execute_in_process(
run_config={
"ops": {
"dwh_metadata_creation": {
"config": {"schema_list_for_query": schema_list_for_query_str}
},
"dwh_metadata_creation_2": {
"config": {"schema_list_for_query": schema_list_for_query_str}
},
"dwh_metadata_creation_3": {
"config": {"schema_list_for_query": schema_list_for_query_str}
},
"dwh_metadata_creation_4": {
"config": {"schema_list_for_query": schema_list_for_query_str}
},
"rds_metadata_creation": {
"config": {"schema_list_for_query": schema_list_for_query_str}
},
"rds_metadata_creation_2": {
"config": {"schema_list_for_query": schema_list_for_query_str}
},
"rds_metadata_creation_3": {
"config": {"schema_list_for_query": schema_list_for_query_str}
},
"rds_metadata_creation_4": {
"config": {"schema_list_for_query": schema_list_for_query_str}
},
}
}
)
if not result.success:
raise Exception("Asset job execution failed")
return result
except Exception as e:
print("Asset job execution failed")
if name == "__main__":
crawler_asset_job()Scout
03/13/2024, 2:56 PMKeyError('l_wh_schema_ignore_list')
suggests that the key wh_schema_ignore_list
is not found in the dictionary l_global_var_dict
when the code attempts to access it. This could happen if the key does not exist in the dictionary returned by db_query_obj.get_global_variable()
. To resolve this issue, you should ensure that the key wh_schema_ignore_list
is indeed present in the dictionary returned by get_global_variable()
. Here are a few steps you can take to debug and fix the problem: 1. Verify that the get_global_variable()
method of the db_query_obj
resource is returning a dictionary that contains the key wh_schema_ignore_list
. You can add a logging statement to print out the dictionary to confirm its contents. 2. If the key is supposed to be optional, you can provide a default value when accessing it using the get()
method of the dictionary. For example: python l_wh_schema_ignore_list = l_global_var_dict.get("wh_schema_ignore_list", default_value)
Replace default_value
with the value you want to use if wh_schema_ignore_list
is not found. 3. If the key is required and should always be present, you need to ensure that the logic that populates the l_global_var_dict
dictionary includes this key. This might involve checking the configuration or the logic of the metadata_query_resource
. 4. If the get_global_variable()
method is supposed to fetch data from an external source (like a database or a configuration file), make sure that the data source contains the required key and that the method is correctly retrieving it. 5. If the key is dynamically determined and may change, you may need to adjust your logic to handle cases where the key is not present. Once you've confirmed that the key is present in the dictionary or handled its absence appropriately, the KeyError
should be resolved. If you continue to face issues, you may need to provide more context or review the implementation of the metadata_query_resource
and its get_global_variable()
method.SUBHADEEP ROY
03/13/2024, 3:02 PMScout
03/13/2024, 3:02 PM"'dmax_change_version'"
(including the single quotes) in the variable l_wh_schema_ignore_list
, it suggests that the value is being interpreted as a string that contains single quotes, rather than just the string dmax_change_version
. This could potentially cause issues if you are using this value in SQL queries or other contexts where the single quotes are not expected or required. To address this, you can strip the single quotes from the string before using it. Here's how you can modify the value to remove the single quotes: python # Original value with single quotes included l_wh_schema_ignore_list = "'dmax_change_version'" # Remove single quotes from the string l_wh_schema_ignore_list = l_wh_schema_ignore_list.strip("'") # Now l_wh_schema_ignore_list should be 'dmax_change_version' without the single quotes
After stripping the single quotes, you can use l_wh_schema_ignore_list
in your asset logic where it is expected to be a string without single quotes. If l_wh_schema_ignore_list
is supposed to be a list of strings and you are receiving it as a single string, you might need to parse it into a list. For example, if l_wh_schema_ignore_list
should be ["dmax_change_version"]
, you would need to adjust the code that sets this value to ensure it's in the correct format. Make sure to review the context in which l_wh_schema_ignore_list
is used and adjust the handling of this variable accordingly. If the value is coming from an external source, such as a configuration file or environment variable, you may also need to check that source to ensure the value is being provided in the correct format.