http healtcheck proposal/WIP

CHANGES

@@ -1,3 +1,6 @@
+1.5.0 (TBD)
+- Health & Readiness endpoints
+
 1.4.0 (May 14, 2024):
 - Updated go-split-commons to v6
   - Added support for targeting rules based on semantic versions (https://semver.org/).

cmd/splitd/main.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/splitio/go-toolkit/v5/logging"
 	"github.com/splitio/splitd/splitio"
+	"github.com/splitio/splitd/splitio/api"
 	"github.com/splitio/splitd/splitio/conf"
 	"github.com/splitio/splitd/splitio/link"
 	"github.com/splitio/splitd/splitio/sdk"
@@ -58,6 +59,9 @@ func main() {
 		}()
 	}
 
+	// launch api in BG (errors will be logged but won't abort execution of app)
+	go startAPI(logger, cfg.API, *linkCFG)
+
 	// Wait for connection to end (either gracefully of because of an error)
 	err = <-errc
 	exitOnErr("shutdown: ", err)
@@ -84,3 +88,14 @@ func exitOnErr(ctxStr string, err error) {
 	}
 
 }
+
+func startAPI(logger logging.LoggerInterface, apiCFG conf.API, linkCFG link.ListenerOptions) {
+	server, err := api.Setup(apiCFG.Host, apiCFG.Port, logger, linkCFG)
+	if err != nil {
+		logger.Error("error creating HTTP server:", err.Error())
+	}
+
+	if err = server.ListenAndServe(); err != nil {
+		logger.Error("error starting http server:", err.Error())
+	}
+}

go.mod

@@ -3,18 +3,44 @@ module github.com/splitio/splitd
 go 1.21
 
 require (
+	github.com/gin-gonic/gin v1.10.0
 	github.com/splitio/go-split-commons/v6 v6.0.0
 	github.com/splitio/go-toolkit/v5 v5.4.0
-	github.com/stretchr/testify v1.8.1
+	github.com/stretchr/testify v1.9.0
 	github.com/vmihailenco/msgpack/v5 v5.3.5
 	golang.org/x/sync v0.3.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
+	github.com/bytedance/sonic v1.11.6 // indirect
+	github.com/bytedance/sonic/loader v0.1.1 // indirect
+	github.com/cloudwego/base64x v0.1.4 // indirect
+	github.com/cloudwego/iasm v0.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.20.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/stretchr/objx v0.5.0 // indirect
+	github.com/stretchr/objx v0.5.2 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.12 // indirect
 	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
+	golang.org/x/arch v0.8.0 // indirect
+	golang.org/x/crypto v0.23.0 // indirect
 	golang.org/x/exp v0.0.0-20231006140011-7918f672742d // indirect
+	golang.org/x/net v0.25.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
+	golang.org/x/text v0.15.0 // indirect
+	google.golang.org/protobuf v1.34.1 // indirect
 )

go.sum

@@ -2,9 +2,53 @@ github.com/bits-and-blooms/bitset v1.3.1 h1:y+qrlmq3XsWi+xZqSaueaE8ry8Y127iMxlMf
 github.com/bits-and-blooms/bitset v1.3.1/go.mod h1:gIdJ4wp64HaoK2YrL1Q5/N7Y16edYb8uY+O0FJTyyDA=
 github.com/bits-and-blooms/bloom/v3 v3.3.1 h1:K2+A19bXT8gJR5mU7y+1yW6hsKfNCjcP2uNfLFKncjQ=
 github.com/bits-and-blooms/bloom/v3 v3.3.1/go.mod h1:bhUUknWd5khVbTe4UgMCSiOOVJzr3tMoijSK3WwvW90=
+github.com/bytedance/sonic v1.11.6 h1:oUp34TzMlL+OY1OUWxHqsdkgC/Zfc85zGqw9siXjrc0=
+github.com/bytedance/sonic v1.11.6/go.mod h1:LysEHSvpvDySVdC2f87zGWf6CIKJcAvqab1ZaiQtds4=
+github.com/bytedance/sonic/loader v0.1.1 h1:c+e5Pt1k/cy5wMveRDyk2X4B9hF4g7an8N3zCYjJFNM=
+github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
+github.com/cloudwego/base64x v0.1.4 h1:jwCgWpFanWmN8xoIUHa2rtzmkd5J2plF/dnLS6Xd/0Y=
+github.com/cloudwego/base64x v0.1.4/go.mod h1:0zlkT4Wn5C6NdauXdJRhSKRlJvmclQ1hhJgA0rcu/8w=
+github.com/cloudwego/iasm v0.2.0 h1:1KNIy1I1H9hNNFEEH3DVnI4UujN+1zjpuk6gwHLTssg=
+github.com/cloudwego/iasm v0.2.0/go.mod h1:8rXZaNYT2n95jn+zTI1sDr+IgcD2GVs0nlbbQPiEFhY=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/gabriel-vasile/mimetype v1.4.3 h1:in2uUcidCuFcDKtdcBxlR0rJ1+fsokWf+uqxgUFjbI0=
+github.com/gabriel-vasile/mimetype v1.4.3/go.mod h1:d8uq/6HKRL6CGdk+aubisF/M5GcPfT7nKyLpA0lbSSk=
+github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
+github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
+github.com/gin-gonic/gin v1.10.0 h1:nTuyha1TYqgedzytsKYqna+DfLos46nTv2ygFy86HFU=
+github.com/gin-gonic/gin v1.10.0/go.mod h1:4PMNQiOhvDRa013RKVbsiNwoyezlm2rm0uX/T7kzp5Y=
+github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
+github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
+github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
+github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
+github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
+github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
+github.com/go-playground/validator/v10 v10.20.0 h1:K9ISHbSaI0lyB2eWMPJo+kOS/FBExVwjEviJTixqxL8=
+github.com/go-playground/validator/v10 v10.20.0/go.mod h1:dbuPbCMFw/DrkbEynArYaCwl3amGuJotoKCe95atGMM=
+github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
+github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
+github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
+github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
+github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
+github.com/klauspost/cpuid/v2 v2.2.7 h1:ZWSB3igEs+d0qvnxR/ZBzXVmxkgt8DdzP6m9pfuVLDM=
+github.com/klauspost/cpuid/v2 v2.2.7/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
+github.com/knz/go-libedit v1.10.1/go.mod h1:MZTVkCWyz0oBc7JOWP3wNAzd002ZbM/5hgShxwh4x8M=
+github.com/leodido/go-urn v1.4.0 h1:WT9HwE9SGECu3lg4d/dIA+jxlljEa1/ffXKmRjqdmIQ=
+github.com/leodido/go-urn v1.4.0/go.mod h1:bvxc+MVxLKB4z00jd1z+Dvzr47oO32F/QSNjSBOlFxI=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
+github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+github.com/pelletier/go-toml/v2 v2.2.2 h1:aYUidT7k73Pcl9nb2gScu7NSrKCSHIDE89b3+6Wq+LM=
+github.com/pelletier/go-toml/v2 v2.2.2/go.mod h1:1t835xjRzz80PqgE6HHgN2JOsmgYu/h4qDAS4n929Rs=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/splitio/go-split-commons/v6 v6.0.0 h1:qenr5qbXafjvM832C64CVpjtlShuQiWCwtR5I2h4ogM=
@@ -13,23 +57,49 @@ github.com/splitio/go-toolkit/v5 v5.4.0 h1:g5WFpRhQomnXCmvfsNOWV4s5AuUrWIZ+amM68
 github.com/splitio/go-toolkit/v5 v5.4.0/go.mod h1:xYhUvV1gga9/1029Wbp5pjnR6Cy8nvBpjw99wAbsMko=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/objx v0.5.0 h1:1zr/of2m5FGMsad5YfcqgdqdWrIhu+EBEJRhR1U7z/c=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
-github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
+github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
+github.com/ugorji/go/codec v1.2.12 h1:9LC83zGrHhuUA9l16C9AHXAqEV/2wBQ4nkvumAE65EE=
+github.com/ugorji/go/codec v1.2.12/go.mod h1:UNopzCgEMSXjBc6AOMqYvWC1ktqTAfzJZUZgYf6w6lg=
 github.com/vmihailenco/msgpack/v5 v5.3.5 h1:5gO0H1iULLWGhs2H5tbAHIZTV8/cYafcFOr9znI5mJU=
 github.com/vmihailenco/msgpack/v5 v5.3.5/go.mod h1:7xyJ9e+0+9SaZT0Wt1RGleJXzli6Q/V5KbhBonMG9jc=
 github.com/vmihailenco/tagparser/v2 v2.0.0 h1:y09buUbR+b5aycVFQs/g70pqKVZNBmxwAhO7/IwNM9g=
 github.com/vmihailenco/tagparser/v2 v2.0.0/go.mod h1:Wri+At7QHww0WTrCBeu4J6bNtoV6mEfg5OIWRZA9qds=
+golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
+golang.org/x/arch v0.8.0 h1:3wRIsP3pM4yUptoR96otTUOXI367OS0+c9eeRi9doIc=
+golang.org/x/arch v0.8.0/go.mod h1:FEVrYAQjsQXMVJ1nsMoVVXPZg6p2JE2mx8psSWTDQys=
+golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI=
+golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
 golang.org/x/exp v0.0.0-20231006140011-7918f672742d h1:jtJma62tbqLibJ5sFQz8bKtEM8rJBtfilJ2qTU199MI=
 golang.org/x/exp v0.0.0-20231006140011-7918f672742d/go.mod h1:ldy0pHrwJyGW56pPQzzkH36rKxoZW1tw7ZJpeKx+hdo=
+golang.org/x/net v0.25.0 h1:d/OCCoBEUq33pjydKrGQhw7IlUPI2Oylr+8qLx49kac=
+golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
 golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
 golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
+golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.15.0 h1:h1V/4gjBv8v9cjcR6+AR5+/cIYK5N/WAgiv4xlsEtAk=
+golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+google.golang.org/protobuf v1.34.1 h1:9ddQBjfCyZPOHPUiPxpYESBLc+T8P3E+Vo4IbKZgFWg=
+google.golang.org/protobuf v1.34.1/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=
+rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

infra/entrypoint.sh

@@ -73,6 +73,10 @@ fi
 [ ! -z ${SPLITD_LOG_LEVEL+x} ]  && accum=$(echo "${accum}" | yq '.logging.level = env(SPLITD_LOG_LEVEL)')
 [ ! -z ${SPLITD_LOG_OUTPUT+x} ] && accum=$(echo "${accum}" | yq '.logging.output = env(SPLITD_LOG_OUTPUT)')
 
+# API configs
+[ ! -z ${SPLITD_API_HOST+x} ]  && accum=$(echo "${accum}" | yq '.api.host = env(SPLITD_API_HOST)')
+[ ! -z ${SPLITD_API_PORT+x} ]  && accum=$(echo "${accum}" | yq '.api.port = env(SPLITD_API_PORT)')
+
 # profiling configs
 [ ! -z ${SPLITD_PROFILING_ENABLE+x} ]  && accum=$(echo "${accum}" | yq '.debug.profiling.enable = env(SPLITD_PROFILING_ENABLE)')
 [ ! -z ${SPLITD_PROFILING_HOST+x} ]  && accum=$(echo "${accum}" | yq '.debug.profiling.host = env(SPLITD_PROFILING_HOST)')

splitd.yaml.tpl

@@ -30,6 +30,7 @@ sdk:
     events:
         refreshRateSeconds: 60
         queueSize: 8192
+    flagSetsFilter: []
 link:
     type: unix-seqpacket
     address: /var/run/splitd.sock
@@ -45,4 +46,7 @@ debug:
         enable: false
         host: localhost
         port: 8888
+api:
+    host: 0.0.0.0
+    port: 8887
 

splitio/api/api.go

@@ -0,0 +1,37 @@
+package api
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+	"github.com/splitio/go-toolkit/v5/logging"
+	"github.com/splitio/splitd/splitio/api/controllers"
+	"github.com/splitio/splitd/splitio/link"
+	"github.com/splitio/splitd/splitio/link/client"
+)
+
+func Setup(host string, port int, logger logging.LoggerInterface, listenerCfG link.ListenerOptions) (*http.Server, error) {
+
+	router := gin.Default()
+	mainAPI := router.Group("/api")
+
+	healthCtrl := controllers.NewHealthController(logger, link.ConsumerOptions{
+		Transfer: listenerCfG.Transfer,
+		Consumer: client.Options{
+			ID:                  strconv.Itoa(os.Getpid()),
+			Protocol:            listenerCfG.Protocol,
+			ImpressionsFeedback: false,
+		},
+		Serialization: listenerCfG.Serialization,
+	})
+
+	healthCtrl.Register(mainAPI)
+
+	return &http.Server{
+		Addr:    fmt.Sprintf("%s:%d", host, port),
+		Handler: router,
+	}, nil
+}

splitio/api/controllers/health.go

@@ -0,0 +1,58 @@
+package controllers
+
+import (
+	"fmt"
+
+	"github.com/gin-gonic/gin"
+	"github.com/splitio/go-toolkit/v5/logging"
+	"github.com/splitio/splitd/splitio/link"
+	"github.com/splitio/splitd/splitio/link/client"
+	"github.com/splitio/splitd/splitio/link/serializer"
+	"github.com/splitio/splitd/splitio/link/transfer"
+)
+
+type HealthCheckController struct {
+	connParams link.ConsumerOptions
+	logger     logging.LoggerInterface
+}
+
+func (c *HealthCheckController) Register(router gin.IRouter) {
+	router.GET("/health", c.isHealthy)
+	router.GET("/ready", c.isReady)
+}
+
+func (c *HealthCheckController) isHealthy(ctx *gin.Context) {
+	ctx.Status(200)
+}
+
+func (c *HealthCheckController) isReady(ctx *gin.Context) {
+	conn, err := transfer.NewClientConn(c.logger, &c.connParams.Transfer)
+	if conn != nil {
+		defer conn.Shutdown()
+	}
+	if err != nil {
+		ctx.AbortWithError(500, fmt.Errorf("error creating raw connection: %w", err))
+		return
+	}
+
+	serial, err := serializer.Setup(c.connParams.Serialization)
+	if err != nil {
+		ctx.AbortWithError(500, fmt.Errorf("error setting up serializer: %w", err))
+		return
+	}
+
+	_, err = client.New(c.logger, conn, serial, c.connParams.Consumer)
+	if err != nil {
+		ctx.AbortWithError(500, fmt.Errorf("error setting up client: %w", err))
+		return
+	}
+
+	ctx.Status(200)
+}
+
+func NewHealthController(logger logging.LoggerInterface, connParams link.ConsumerOptions) *HealthCheckController {
+	return &HealthCheckController{
+		connParams: connParams,
+		logger:     logger,
+	}
+}

splitio/commitsha.go

@@ -1,3 +1,3 @@
 package splitio
 
-const CommitSHA = "3f5eb7e"
+const CommitSHA = "d46a130"

splitio/conf/splitd.go

@@ -3,7 +3,6 @@ package conf
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"log"
 	"os"
 	"strings"
@@ -29,6 +28,7 @@ type Config struct {
 	SDK    SDK    `yaml:"sdk"`
 	Link   Link   `yaml:"link"`
 	Debug  Debug  `yaml:"debug"`
+	API    API    `yaml:"api"`
 }
 
 func (c Config) String() string {
@@ -42,7 +42,7 @@ func (c Config) String() string {
 
 func (c *Config) parse(fn string) error {
 
-	raw, err := ioutil.ReadFile(fn)
+	raw, err := os.ReadFile(fn)
 	if err != nil {
 		return fmt.Errorf("error reading yaml file: %w", err)
 	}
@@ -60,6 +60,7 @@ func (c *Config) PopulateWithDefaults() {
 	c.Link.PopulateWithDefaults()
 	c.Logger.PopulateWithDefaults()
 	c.Debug.PopulateWithDefaults()
+	c.API.PopulateWithDefaults()
 }
 
 type Link struct {
@@ -278,6 +279,16 @@ func (l *Logger) ToLoggerOptions() (*logging.LoggerOptions, error) {
 	return opts, nil
 }
 
+type API struct {
+	Host string `yaml:"host"`
+	Port int    `yaml:"port"`
+}
+
+func (a *API) PopulateWithDefaults() {
+	a.Host = "0.0.0.0"
+	a.Port = 8887
+}
+
 type Debug struct {
 	Profiling Profiling `yaml:"profiling"`
 }
@@ -305,5 +316,6 @@ func ReadConfig() (*Config, error) {
 	}
 
 	var c Config
+	c.PopulateWithDefaults()
 	return &c, c.parse(cfgFN)
 }

splitio/version.go

@@ -1,3 +1,3 @@
 package splitio
 
-const Version = "1.4.0"
+const Version = "1.5.0"