Ethereum Blockchain [DEPRECATED]
Ethereum is a smart contract blockchain. With the Ethereum Blockchain connector, you can perform actions such as submitting transactions, reading contract state, and trigger flows on contract updates.
This connector is available in the following products and regions:
| Service | Class | Regions |
|---|---|---|
| Logic Apps | Standard | All Logic Apps regions except the following: - Azure China regions - US Department of Defense (DoD) |
| Power Automate | Premium | All Power Automate regions except the following: - US Government (GCC High) - China Cloud operated by 21Vianet - US Department of Defense (DoD) |
| Power Apps | Premium | All Power Apps regions except the following: - US Government (GCC High) - China Cloud operated by 21Vianet - US Department of Defense (DoD) |
| Contact | |
|---|---|
| Name | Azure Blockchain Service |
| URL | https://azure.microsoft.com/en-us/services/blockchain-service/ |
| [email protected] |
| Connector Metadata | |
|---|---|
| Publisher | Microsoft |
| Website | https://ethereum.org/ |
| Privacy policy | https://ethereum.org/privacy-policy/ |
| Categories | Content and Files;Data |
Ethereum Logic App Connector
Deprecation Information
This connector has been deprecated as of August 2020 due to diminishing support. More information will be published on timelines for disabling the connector.
Creating the connection object
Once you choose your Ethereum connector, you'll be prompted for setting up your connection. Your connection will point to an RPC endpoint and can optionally provide an Ethereum account that can be used for signing. This signing is only necessary for performing write actions on the blockchain: Deploy smart contract or Execute smart contract function (incurring gas cost). The connectors support two variations of transaction signing:
- Private Key
- You must provide your private key to the connection. During execution, your transaction is signed within the connector and the signed payload is sent to the RPC endpoint using SendRawTransaction.
- On-node signing
- You must provide your Ethereum address and password. In this case, signing will occur within the node sitting behind the RPC endpoint. As a prerequisite, you must create the account on the node. In this case, SendTransaction is used which does not leave the account unlocked on the node.
Important
You may only specify one authentication type per connection.
PrivateFor
For connectors that update contract state, you may specify the privateFor property if connecting to a Quorum transaction node (Tessera or Constellation). When specifying the connection object, you must use the on-node signing approach. To specify the privateFor property, select Add new parameter at the bottom of the connector. Once selecting privateFor, you may add a comma separated list of public keys that should have access to this private state.
Note
Due to a limitation in Quorum, when using privateFor the account is unlocked for a short period of time. For this reason, it is recommended that this node is only accessible by using a secure API key.
Known limitations
- Indexed events are not currently supported.
- Bytes32 return type not supported for privateFor transactions.
- When using privateFor to call a smart contract function, the estimated gas limit is automatically doubled due to account for a gas estimation bug.
Creating a connection
The connector supports the following authentication types:
| Default | Parameters for creating connection. | All regions | Not shareable |
Default
Applicable: All regions
Parameters for creating connection.
This is not shareable connection. If the power app is shared with another user, another user will be prompted to create new connection explicitly.
| Name | Type | Description | Required |
|---|---|---|---|
| Ethereum RPC Endpoint | securestring | Ethereum RPC Endpoint | True |
| Private Key | securestring | Your private key (eg. 0x612a07ccb...) | |
| Account Address | string | Your existing Account Address | |
| Account Password | securestring | Your account Password |
Throttling Limits
| Name | Calls | Renewal Period |
|---|---|---|
| API calls per connection | 60 | 60 seconds |
Actions
| Deploy smart contract [DEPRECATED] |
Deploy smart contract. |
| Execute smart contract function (incurring gas cost) [DEPRECATED] |
Execute smart contract function (incurring gas cost). |
| Get smart contract state (all properties) [DEPRECATED] |
Get smart contract state (all properties). |
| Query smart contract function (incurring no gas cost) [DEPRECATED] |
Query smart contract function (incurring no gas cost). |
Deploy smart contract [DEPRECATED]
Deploy smart contract.
Parameters
| Name | Key | Required | Type | Description |
|---|---|---|---|---|
|
Contract ABI
|
abi | True | string |
The smart contract ABI. |
|
Smart Contract Function Parameters
|
parameters | True | dynamic |
The smart contract constructor parameters. |
|
Gas Price in Wei
|
gasPrice | string |
Optional: gas price in wei in non-hex format. |
|
|
Gas Limit
|
gasLimit | string |
Optional: gas limit in non-hex format. |
|
|
Private For List
|
privateForKeyList | string |
[Quorum] Optional: list of public keys that are allowed to see this transaction (eg. Q2/x..., 2mN... ). |
Returns
The deploy smart contract action result
Execute smart contract function (incurring gas cost) [DEPRECATED]
Execute smart contract function (incurring gas cost).
Parameters
| Name | Key | Required | Type | Description |
|---|---|---|---|---|
|
Contract ABI
|
abi | True | string |
The smart contract ABI. |
|
Smart Contract Address
|
contractAddress | True | string |
The smart contract address. |
|
Smart Contract Function Name
|
functionName | True | string |
The name of the function to invoke. |
|
Smart Contract Function Parameters
|
parameters | True | dynamic |
The parameters of the function. |
|
Gas Price in Wei
|
gasPrice | string |
Optional: gas price in wei in non-hex format. |
|
|
Gas Limit
|
gasLimit | string |
Optional: gas limit in non-hex format. |
|
|
Private For List
|
privateForKeyList | string |
[Quorum] Optional: list of public keys that are allowed to see this transaction (eg. Q2/x..., 2mN... ). |
Returns
The execute smart contract function action result
Get smart contract state (all properties) [DEPRECATED]
Get smart contract state (all properties).
Parameters
| Name | Key | Required | Type | Description |
|---|---|---|---|---|
|
Contract ABI
|
abi | True | string |
The smart contract ABI. |
|
Smart Contract Address
|
contractAddress | True | string |
The smart contract address. |
Returns
Query smart contract function (incurring no gas cost) [DEPRECATED]
Query smart contract function (incurring no gas cost).
Parameters
| Name | Key | Required | Type | Description |
|---|---|---|---|---|
|
Contract ABI
|
abi | True | string |
The smart contract ABI. |
|
Smart Contract Address
|
contractAddress | True | string |
The smart contract address. |
|
Smart Contract Function Name
|
functionName | True | string |
The Function Name. |
|
Smart Contract Function Parameters
|
parameters | True | dynamic |
The input parameters to the function. |
Returns
Triggers
| When a smart contract event occurs [DEPRECATED] |
When a smart contract event occurs. |
When a smart contract event occurs [DEPRECATED]
When a smart contract event occurs.
Parameters
| Name | Key | Required | Type | Description |
|---|---|---|---|---|
|
Contract ABI
|
abi | string |
The smart contract ABI. |
|
|
Smart Contract Address
|
contractAddress | string |
The smart contract address. |
|
|
Event Name
|
eventName | string |
Event name. |
Returns
Definitions
DeploySmartContractResult
The deploy smart contract action result
| Name | Path | Type | Description |
|---|---|---|---|
|
Smart Contract Address
|
ContractAddress | string |
The smart contract address |
|
Transaction Hash
|
TransactionHash | string |
The transaction hash |
ExecuteSmartContractFunctionResult
The execute smart contract function action result
| Name | Path | Type | Description |
|---|---|---|---|
|
Transaction Hash
|
TransactionHash | string |
The transaction hash |