filter api reconstruct

[ucwong]

No description provided.

[codecov]

Codecov Report

Merging #1326 (2653f0d) into master (07b8895) will decrease coverage by 0.04%.
The diff coverage is 51.33%.

@@            Coverage Diff             @@
##           master    #1326      +/-   ##
==========================================
- Coverage   51.10%   51.06%   -0.05%     
==========================================
  Files         445      445              
  Lines       56089    56161      +72     
==========================================
+ Hits        28663    28677      +14     
- Misses      25239    25299      +60     
+ Partials     2187     2185       -2     

Impacted Files	Coverage Δ
ctxc/api_backend.go	0.00% <0.00%> (ø)
ctxc/backend.go	0.00% <0.00%> (ø)
miner/miner.go	0.00% <0.00%> (ø)
miner/worker.go	0.00% <0.00%> (ø)
ctxc/filters/filter.go	57.14% <49.38%> (-8.93%)	⬇️
ctxc/filters/api.go	50.66% <60.86%> (+4.51%)	⬆️
ctxc/filters/filter_system.go	61.19% <76.66%> (-3.13%)	⬇️
p2p/discover/v4_udp.go	74.74% <0.00%> (-4.34%)	⬇️
rpc/client.go	85.38% <0.00%> (-1.00%)	⬇️
... and 13 more