This commit is contained in:
Austin 2025-12-10 12:58:54 -05:00
parent 027f73276c
commit 70d5fc1c3e
3 changed files with 196 additions and 5 deletions

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@ -307,5 +307,91 @@
sql: |
{{ fsc_utils.create_udf_encode_contract_call() | indent(4) }}
- name: {{ schema }}.udf_create_eth_call
signature:
- [contract_address, STRING]
- [encoded_calldata, STRING]
return_type: OBJECT
options: |
NULL
LANGUAGE SQL
STRICT IMMUTABLE
COMMENT = 'Creates an eth_call JSON-RPC request object with default block parameter "latest".'
sql: |
{{ schema }}.udf_json_rpc_call(
'eth_call',
ARRAY_CONSTRUCT(
OBJECT_CONSTRUCT(
'to', contract_address,
'data', encoded_calldata
),
'latest'
)
)
- name: {{ schema }}.udf_create_eth_call
signature:
- [contract_address, STRING]
- [encoded_calldata, STRING]
- [block_parameter, VARIANT]
return_type: OBJECT
options: |
NULL
LANGUAGE SQL
STRICT IMMUTABLE
COMMENT = 'Creates an eth_call JSON-RPC request object. Accepts contract address, encoded calldata, and optional block parameter (string or number). If block_parameter is a number, it will be converted to hex format using ai.utils.udf_int_to_hex.'
sql: |
{{ schema }}.udf_json_rpc_call(
'eth_call',
ARRAY_CONSTRUCT(
OBJECT_CONSTRUCT(
'to', contract_address,
'data', encoded_calldata
),
CASE
WHEN block_parameter IS NULL THEN 'latest'
WHEN TYPEOF(block_parameter) IN ('INTEGER', 'NUMBER', 'FIXED', 'FLOAT') THEN
{{ schema }}.udf_int_to_hex(block_parameter::NUMBER)
ELSE block_parameter::STRING
END
)
)
- name: {{ schema }}.udf_create_eth_call_from_abi
signature:
- [contract_address, STRING]
- [function_abi, VARIANT]
- [input_values, ARRAY]
return_type: OBJECT
options: |
NULL
LANGUAGE SQL
STRICT IMMUTABLE
COMMENT = '{{ fsc_utils.udf_create_eth_call_from_abi_comment() }}'
sql: |
{{ schema }}.udf_create_eth_call(
contract_address,
{{ schema }}.udf_encode_contract_call(function_abi, input_values)
)
- name: {{ schema }}.udf_create_eth_call_from_abi
signature:
- [contract_address, STRING]
- [function_abi, VARIANT]
- [input_values, ARRAY]
- [block_parameter, VARIANT]
return_type: OBJECT
options: |
NULL
LANGUAGE SQL
STRICT IMMUTABLE
COMMENT = '{{ fsc_utils.udf_create_eth_call_from_abi_comment() }}'
sql: |
{{ schema }}.udf_create_eth_call(
contract_address,
{{ schema }}.udf_encode_contract_call(function_abi, input_values),
block_parameter
)
{% endmacro %}

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@ -1099,7 +1099,7 @@ TYPICAL WORKFLOW:
1. Get function ABI from crosschain.evm.dim_contract_abis
2. Prepare input values as Snowflake arrays
3. Encode using this function
4. Execute via eth_call RPC (ai.live.udf_api)
4. Execute via eth_call RPC (live.udf_api)
5. Decode response using utils.udf_evm_decode_trace
SUPPORTED TYPES:
@ -1131,3 +1131,112 @@ RELATED FUNCTIONS:
- utils.udf_evm_decode_trace: Decode call results
{% endmacro %}
{% macro udf_create_eth_call_from_abi_comment() %}
Convenience function that combines contract call encoding and JSON-RPC request creation for eth_call.
PURPOSE:
Simplifies the workflow of creating eth_call JSON-RPC requests by combining ABI encoding
and RPC call construction into a single function call. This is the recommended approach for
most use cases where you want to query contract state via eth_call.
PARAMETERS:
contract_address (STRING):
- Ethereum contract address (with or without 0x prefix)
- Example: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48'
function_abi (VARIANT):
- JSON object containing the function ABI definition
- Must include: "name" (string) and "inputs" (array of input definitions)
- Each input needs: "name", "type", and optionally "components" for tuples
- Can be retrieved from tables like crosschain.evm.dim_contract_abis or ethereum.silver.flat_function_abis
input_values (ARRAY):
- Array of values matching the function inputs in order
- Values should be provided as native Snowflake types:
* addresses: strings (with or without 0x prefix)
* uint/int: numbers
* bool: booleans
* bytes/bytes32: hex strings (with or without 0x prefix)
* arrays: Snowflake arrays
* tuples: Snowflake arrays in component order
block_parameter (VARIANT, optional):
- Block identifier for the eth_call request
- If NULL or omitted: defaults to 'latest'
- If NUMBER: automatically converted to hex format (e.g., 18500000 -> '0x11a7f80')
- If STRING: used directly (e.g., 'latest', '0x11a7f80', 'pending')
RETURNS:
OBJECT: Complete JSON-RPC request object ready for eth_call
- Format: {"jsonrpc": "2.0", "method": "eth_call", "params": [...], "id": "..."}
- Can be used directly with RPC execution functions like live.udf_api
EXAMPLES:
-- Simple balanceOf call with default 'latest' block
SELECT utils.udf_create_eth_call_from_abi(
'0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
PARSE_JSON('{
"name": "balanceOf",
"inputs": [{"name": "account", "type": "address"}]
}'),
ARRAY_CONSTRUCT('0xBcca60bB61934080951369a648Fb03DF4F96263C')
);
-- Same call but at a specific block number
SELECT utils.udf_create_eth_call_from_abi(
'0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
PARSE_JSON('{
"name": "balanceOf",
"inputs": [{"name": "account", "type": "address"}]
}'),
ARRAY_CONSTRUCT('0xBcca60bB61934080951369a648Fb03DF4F96263C'),
18500000
);
-- Using ABI from a table
WITH abi_data AS (
SELECT
abi,
'0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48' as contract_address,
'0xBcca60bB61934080951369a648Fb03DF4F96263C' as user_address
FROM ethereum.silver.flat_function_abis
WHERE contract_address = LOWER('0x43506849D7C04F9138D1A2050bbF3A0c054402dd')
AND function_name = 'balanceOf'
)
SELECT
utils.udf_create_eth_call_from_abi(
contract_address,
abi,
ARRAY_CONSTRUCT(user_address)
) as rpc_call
FROM abi_data;
TYPICAL WORKFLOW:
1. Get function ABI from contract ABI tables (crosschain.evm.dim_contract_abis, etc.)
2. Prepare input values as Snowflake arrays matching the function signature
3. Call this function with contract address, ABI, and inputs
4. Execute the returned RPC call object via live.udf_api or similar
5. Decode the response using utils.udf_evm_decode_trace or similar decoder
ADVANTAGES OVER MODULAR APPROACH:
- Single function call instead of two (encode + create)
- Cleaner, more readable SQL
- Better for AI systems (fewer steps to explain)
- Less error-prone (no intermediate variables)
- More intuitive function name
WHEN TO USE MODULAR FUNCTIONS INSTEAD:
- When you need to reuse encoded calldata for multiple RPC calls
- When you need encoded calldata for transaction construction
- When building complex workflows with intermediate steps
RELATED FUNCTIONS:
- utils.udf_encode_contract_call: Encode function calls to calldata (used internally)
- utils.udf_create_eth_call: Create RPC call from encoded calldata (used internally)
- utils.udf_evm_text_signature: Generate function signature from ABI
- utils.udf_keccak256: Calculate function selector hash
- utils.udf_evm_decode_trace: Decode eth_call response results
{% endmacro %}

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@ -1,7 +1,3 @@
packages:
- package: calogica/dbt_expectations
version: [">=0.8.0", "<0.9.0"]
- package: dbt-labs/dbt_utils
version: [">=1.0.0", "<1.1.0"]
- git: https://github.com/FlipsideCrypto/livequery-models.git
revision: "v1.10.2"