Expand indxer to support messages sent via smart contracts

[robdefeo]

Is your feature request related to a problem? Please describe.
When sending a message via a smart contract the envelope is not at the beginning of the data field. Currently the check looks only at the prefix.

Describe the solution you'd like

• replace check for prefix to look anywhere in the message payload
• extend store transaction to include envelope data and transaction data as seperate fields
• create tests

Additional context
Example transaction - https://ropsten.etherscan.io/tx/0x5371f7ab5c829036b7704139000a5fc2ad2ff7f2255c328c8e6ebecd227c73bc

[rickynyairo]

Hi @robdefeo, I'd like to work on this

[robdefeo]

Thanks @rickynyairo I will assign this to you.

[tboeckmann]

Hi @rickynyairo - how are you getting on with this issue? Are you still working on it?

[rickynyairo]

Hi @tboeckmann
Sorry, please unassign me as I'm unable to complete it at the moment.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. The resources of the Mailchain team are limited, and so we are asking for your help. If this is a bug and you can still reproduce this error on the master branch, please reply in order to keep the issue open. If this is a feature request, and you feel that it is still relevant and valuable, please reply in order to keep the issue open. This issue will automatically be closed in the near future if no further activity occurs. Thank you for all your contributions.

[ygoryainov]

Hi @robdefeo and @tboeckmann,
can i try to work on it?

[marianososto]

Hi @robdefeo I've been looking inside package ´cmd/indexer´ to understand where theses changes need to be applied but I'm not following the issue correctly. Can you give me some orientation/help on how to tackle this issue?
thanks!