Submsg and replies

[ethanfrey]

Closes #421

• Add private method to call reply entry point
• Wrote logic to dispatch submessages
• Dispatch submessages from all (non-ibc) entrypoints (see note below)
• Test submessage handling via reflect contract
  • no gas limit, success
  • no gas limit, failure
  • no gas limit, out-of-gas panic
  • gas limit, success
  • gas limit, failure
  • gas limit, consume all gas
  • Instantiate Contract, get address from reply.Data

Note: we will need to update again after CosmWasm/cosmwasm#822 to add support for submessages in the ibc callbacks

[codecov]

Codecov Report

Merging #441 (00e99b8) into master (8d9ed87) will increase coverage by 0.65%.
The diff coverage is 82.60%.

@@            Coverage Diff             @@
##           master     #441      +/-   ##
==========================================
+ Coverage   54.90%   55.56%   +0.65%     
==========================================
  Files          39       39              
  Lines        4218     4305      +87     
==========================================
+ Hits         2316     2392      +76     
- Misses       1706     1712       +6     
- Partials      196      201       +5     

Impacted Files	Coverage Δ
x/wasm/internal/keeper/handler_plugin.go	76.19% <66.66%> (+1.08%)	⬆️
x/wasm/internal/keeper/keeper.go	86.24% <84.21%> (-0.33%)	⬇️
x/wasm/internal/keeper/relay.go	100.00% <100.00%> (ø)

[alpe]

Some quick feedback on the questions. No time for a proper review yet.

[alpe]

Good 🎸
Only the data payload may become an issue.

[ethanfrey]

Okay, I addressed all the comments and added a bug fix and test.

Rebased on master (to include pinned contract metering) and please feel free to merge if it looks better now.

[alpe]

Awesome feature, Thanks 💐