feat(backend): add distribution queue #33
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Sequence Diagram(s)sequenceDiagram
participant Owner
participant AttestationHandler
participant Distributor
participant DistributionQueueContract
Owner->>+DistributionQueueContract: updateOwner(newOwner)
DistributionQueueContract-->>-Owner: emit OwnerUpdated
Owner->>+DistributionQueueContract: updateAttestationHandler(newAttestationHandler)
DistributionQueueContract-->>-Owner: emit AttestationHandlerUpdated
Distributor->>+DistributionQueueContract: addDistribution()
DistributionQueueContract-->>-Distributor: emit DistributionAdded
AttestationHandler->>+DistributionQueueContract: updateDistributionStatus(queueIndex, newStatus)
DistributionQueueContract-->>-AttestationHandler: emit DistributionStatusUpdated
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| modifier onlyOwner() { | ||
| if (msg.sender != owner) { | ||
| revert OnlyOwner(); | ||
| } | ||
| _; | ||
| } | ||
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| modifier onlyAttestationHandler() { | ||
| if (msg.sender != owner) { | ||
| revert OnlyAttestationHandler(); | ||
| } | ||
| _; | ||
| } |
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Fix the address check in onlyAttestationHandler modifier.
The onlyAttestationHandler modifier should check attestationHandler instead of owner.
- if (msg.sender != owner) {
+ if (msg.sender != attestationHandler) {Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| modifier onlyOwner() { | |
| if (msg.sender != owner) { | |
| revert OnlyOwner(); | |
| } | |
| _; | |
| } | |
| modifier onlyAttestationHandler() { | |
| if (msg.sender != owner) { | |
| revert OnlyAttestationHandler(); | |
| } | |
| _; | |
| } | |
| modifier onlyOwner() { | |
| if (msg.sender != owner) { | |
| revert OnlyOwner(); | |
| } | |
| _; | |
| } | |
| modifier onlyAttestationHandler() { | |
| if (msg.sender != attestationHandler) { | |
| revert OnlyAttestationHandler(); | |
| } | |
| _; | |
| } |
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Actionable comments posted: 2
Outside diff range and nitpick comments (1)
backend/contracts/DistributionQueue.sol (1)
1-3: Specify the license identifier.It's a good practice to specify the SPDX license identifier for clarity.
// SPDX-License-Identifier: MIT pragma solidity ^0.8.24;
| function updateDistributionStatus(uint256 queueIndex, DistributionStatus _distributionStatus) public onlyAttestationHandler() { | ||
| Distribution memory distribution = queue[queueIndex]; | ||
| distribution.status = _distributionStatus; | ||
| emit DistributionStatusUpdated(distribution); | ||
| } |
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Fix the distribution update logic.
The updateDistributionStatus function updates a local copy of the distribution instead of the original one in the queue.
- Distribution memory distribution = queue[queueIndex];
- distribution.status = _distributionStatus;
- emit DistributionStatusUpdated(distribution);
+ queue[queueIndex].status = _distributionStatus;
+ emit DistributionStatusUpdated(queue[queueIndex]);Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| function updateDistributionStatus(uint256 queueIndex, DistributionStatus _distributionStatus) public onlyAttestationHandler() { | |
| Distribution memory distribution = queue[queueIndex]; | |
| distribution.status = _distributionStatus; | |
| emit DistributionStatusUpdated(distribution); | |
| } | |
| function updateDistributionStatus(uint256 queueIndex, DistributionStatus _distributionStatus) public onlyAttestationHandler() { | |
| queue[queueIndex].status = _distributionStatus; | |
| emit DistributionStatusUpdated(queue[queueIndex]); | |
| } |
| event OwnerUpdated(address owner); | ||
| event AttestationHandlerUpdated(address attestationHandler); | ||
| event DistributionAdded(Distribution distribution); | ||
| event DistributionStatusUpdated(Distribution distribution); |
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Consider including old and new values in events.
For better traceability, the OwnerUpdated and AttestationHandlerUpdated events can include both old and new values.
- event OwnerUpdated(address owner);
- event AttestationHandlerUpdated(address attestationHandler);
+ event OwnerUpdated(address indexed previousOwner, address indexed newOwner);
+ event AttestationHandlerUpdated(address indexed previousHandler, address indexed newHandler);Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| event OwnerUpdated(address owner); | |
| event AttestationHandlerUpdated(address attestationHandler); | |
| event DistributionAdded(Distribution distribution); | |
| event DistributionStatusUpdated(Distribution distribution); | |
| event OwnerUpdated(address indexed previousOwner, address indexed newOwner); | |
| event AttestationHandlerUpdated(address indexed previousHandler, address indexed newHandler); | |
| event DistributionAdded(Distribution distribution); | |
| event DistributionStatusUpdated(Distribution distribution); |
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@jo-elimu The indexed keyword in Solidity is used in event definitions to make the event parameters searchable. When an event is emitted, the parameters that are marked as indexed can be used to filter and search for specific events in the transaction logs. Each event can have up to three indexed parameters. This is particularly useful for querying historical events and analyzing blockchain data.
In the context of your events, using indexed would allow you to search for events by the previous and new owner or attestation handler, making it easier to trace changes over time.
Here is the updated event definition with indexed parameters:
event OwnerUpdated(address indexed previousOwner, address indexed newOwner);
event AttestationHandlerUpdated(address indexed previousHandler, address indexed newHandler);This means you can now filter and search for these events based on the previousOwner, newOwner, previousHandler, and newHandler values.
Let me know if you have any more questions!
Learnings added
Learnt from: jo-elimu
PR: elimu-ai/web3-sponsors#33
File: backend/contracts/DistributionQueue.sol:22-25
Timestamp: 2024-06-30T19:35:54.619Z
Learning: The `indexed` keyword in Solidity event definitions is used to make event parameters searchable, allowing for efficient querying and filtering of events in transaction logs.
Note: Learnings are effective only in the context of similar code segments. To apply general coding guidelines, please configure review instructions. You can manage existing learnings in the app.
refs #13