add metric and breaker to es

[UnderTreeTech]

No description provided.

[codecov-commenter]

Codecov Report

Merging #129 (09aed04) into master (27db024) will decrease coverage by 1.47%.
The diff coverage is 48.37%.

@@            Coverage Diff             @@
##           master     #129      +/-   ##
==========================================
- Coverage   77.40%   75.92%   -1.48%     
==========================================
  Files          55       58       +3     
  Lines        3863     4100     +237     
==========================================
+ Hits         2990     3113     +123     
- Misses        679      783     +104     
- Partials      194      204      +10     

Impacted Files	Coverage Δ
pkg/database/es/query.go	5.00% <5.00%> (ø)
pkg/database/es/stats.go	68.75% <70.83%> (ø)
pkg/database/es/client.go	77.60% <74.77%> (ø)

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