(security-rotate-Prometheus/metrics-endpoint-behind-authentication

[shamoo53]

Closes #131
Closes #132
Closes #133
Closes #134

🚀 PR: Implement Gas Price Volatility Fail-Safe for Batch Payouts

🧭 Overview

This PR introduces a gas volatility fail-safe mechanism for batch payouts by implementing a pre-funded gas buffer. This ensures that critical payout transactions always succeed, even during periods of high network fees.

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🎯 Problem

During peak network activity:

• Transaction fees can spike unpredictably
• Batch payout transactions may fail due to insufficient gas
• Failed payouts can disrupt user trust and protocol reliability

For a system like Susu, where payouts are time-sensitive and critical, this poses a major risk.

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💡 Solution

• Introduce a Gas Buffer Pool funded in advance by the group lead
• Automatically utilize this buffer during payout execution when fees are high
• Ensure payout transactions always have sufficient gas to succeed

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🛠 Scope of Work

⛽ Gas Buffer Mechanism

• Implemented a pre-funded XLM pool dedicated to covering transaction fees
• Linked buffer usage directly to payout execution logic

🔄 Payout Logic Enhancement

• Modified batch payout flow to:

  • Check available gas funds
  • Supplement fees from the buffer when required

🛡 Reliability Improvements

• Ensures monthly payout transactions always succeed
• Protects against network congestion and fee spikes

⚙️ Contract Updates

• Added functions for:

  • Funding the gas buffer
  • Tracking buffer usage

• Included safeguards to prevent misuse of buffer funds

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📊 Acceptance Criteria

• ✔️ Batch payouts succeed even during high network fee conditions
• ✔️ Gas buffer can be pre-funded by group lead
• ✔️ Buffer is used only when necessary
• ✔️ Payout logic remains accurate and unaffected
• ✔️ No regression in normal (low-fee) scenarios

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🧪 Testing

• Simulated high-fee scenarios to validate buffer usage
• Tested payout success with and without buffer funding
• Verified buffer depletion and edge cases
• Ensured no impact on standard payout flows

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📚 Notes

• Designed to maintain 100% payout reliability, a core protocol guarantee
• Can be extended to include dynamic buffer sizing or auto-refill mechanisms
• Improves user confidence in long-term participation

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🏁 Summary

This PR enhances the protocol’s resilience by introducing a gas buffer fail-safe, ensuring that critical batch payouts are executed successfully regardless of network fee volatility.

[drips-wave]

@shamoo53 Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

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