feat: add nacos for service registry and discovery

go.mod

@@ -48,6 +48,7 @@ require (
 	github.com/lib/pq v1.3.0 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-sqlite3 v2.0.1+incompatible // indirect
+	github.com/nacos-group/nacos-sdk-go v1.1.1 // indirect
 	github.com/nats-io/nats-server/v2 v2.1.2 // indirect
 	github.com/nats-io/nats.go v1.13.0
 	github.com/opentracing/opentracing-go v1.2.0

go.sum

@@ -85,6 +85,7 @@ github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a h1:HbKu58rmZp
 github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
 github.com/alicebob/miniredis/v2 v2.15.1 h1:Fw+ixAJPmKhCLBqDwHlTDqxUxp0xjEwXczEpt1B6r7k=
 github.com/alicebob/miniredis/v2 v2.15.1/go.mod h1:gquAfGbzn92jvtrSC69+6zZnwSODVXVpYDRaGhWaL6I=
+github.com/aliyun/alibaba-cloud-sdk-go v1.61.18/go.mod h1:v8ESoHo4SyHmuB4b1tJqDHxfTGEciD+yhvOU/5s1Rfk=
 github.com/andybalholm/cascadia v1.1.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
@@ -100,6 +101,7 @@ github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+Ce
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
+github.com/buger/jsonparser v1.1.1/go.mod h1:6RYKKt7H4d4+iWqouImQ9R2FZql3VbhNgx27UK13J/0=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/census-instrumentation/opencensus-proto v0.3.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
@@ -196,6 +198,7 @@ github.com/gin-gonic/gin v1.5.0/go.mod h1:Nd6IXA8m5kNZdNEHMBd93KT+mdY3+bewLgRvmC
 github.com/gin-gonic/gin v1.6.2/go.mod h1:75u5sXoLsGZoRN5Sgbi1eraJ4GU3++wFwWzhwvtwp4M=
 github.com/gin-gonic/gin v1.7.3 h1:aMBzLJ/GMEYmv1UWs2FFTcPISLrQH2mRgL9Glz8xows=
 github.com/gin-gonic/gin v1.7.3/go.mod h1:jD2toBW3GZUr5UMcdrwQA10I7RuaFOl/SGeDjXkfUtY=
+github.com/go-errors/errors v1.0.1/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
@@ -289,6 +292,7 @@ github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5x
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
+github.com/goji/httpauth v0.0.0-20160601135302-2da839ab0f4d/go.mod h1:nnjvkQ9ptGaCkuDUx6wNykzzlUixGxvkme+H/lnzb+A=
 github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe h1:lXe2qZdvpiX5WZkZR4hgp4KJVfY3nMkvmwbVkpv1rVY=
 github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe/go.mod h1:8vg3r2VgvsThLBIFL93Qb5yWzgyZWhEmBwUJWevAkK0=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
@@ -370,6 +374,7 @@ github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5m
 github.com/googleapis/gax-go/v2 v2.1.0/go.mod h1:Q3nei7sK6ybPYH7twZdmQpAd1MKb7pfu6SK+H1/DsU0=
 github.com/googleapis/gax-go/v2 v2.1.1/go.mod h1:hddJymUZASv3XPyGkUpKj8pPO47Rmb0eJc8R6ouapiM=
 github.com/googleapis/google-cloud-go-testing v0.0.0-20200911160855-bcd43fbb19e8/go.mod h1:dvDLG8qkwmyD9a/MJJN3XJcT3xFxOKAvTZGvuZmac9g=
+github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyCS8BvQ=
 github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
 github.com/gorilla/sessions v1.2.1 h1:DHd3rPN5lE3Ts3D8rKkQ8x/0kqfeNmBAaiSi+o7FsgI=
@@ -436,6 +441,7 @@ github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkr
 github.com/jinzhu/now v1.0.1/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
 github.com/jinzhu/now v1.1.1 h1:g39TucaRWyV3dwDO++eEc6qf8TVIQ/Da48WmqjZ3i7E=
 github.com/jinzhu/now v1.1.1/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
+github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
 github.com/jmespath/go-jmespath v0.4.0 h1:BEgLn5cpjn8UN1mAw4NjwDrS35OdebyEtFe+9YPoQUg=
 github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
 github.com/jmespath/go-jmespath/internal/testify v1.5.1 h1:shLQSRRSCCPj3f2gpwzGwWFoC7ycTf1rcQZHOlsJ6N8=
@@ -456,6 +462,7 @@ github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnr
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
+github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
 github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8IZAc4RVcycCCAKdM=
 github.com/karrick/godirwalk v1.8.0/go.mod h1:H5KPZjojv4lE+QYImBI8xVtrBRgYrIVsaRPx4tDPEn4=
@@ -545,6 +552,8 @@ github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjY
 github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
+github.com/nacos-group/nacos-sdk-go v1.1.1 h1:beczWcOoTaVBMgCgikqvZflrN5Xbw7pWAWpxl+VJGIA=
+github.com/nacos-group/nacos-sdk-go v1.1.1/go.mod h1:UHOtQNQY/qpk2dhg6gDq8u5+/CEIc3+lWmrmxEzX0/g=
 github.com/nats-io/jwt v0.3.0/go.mod h1:fRYCDE99xlTsqUzISS1Bi75UBJ6ljOJQOAAu5VglpSg=
 github.com/nats-io/jwt v0.3.2 h1:+RB5hMpXUUA2dfxuhBTEkMOrYmM+gKIZYS1KjSostMI=
 github.com/nats-io/jwt v0.3.2/go.mod h1:/euKqTS1ZD+zzjYrY7pseZrTtWQSjujC7xjPc8wL6eU=
@@ -636,6 +645,8 @@ github.com/sirupsen/logrus v1.4.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPx
 github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMBDgk/93Q=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
+github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
+github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
 github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
@@ -776,14 +787,18 @@ go.opentelemetry.io/otel/trace v1.3.0 h1:doy8Hzb1RJ+I3yFhtDmwNc7tIyw1tNMOIsyPzp1
 go.opentelemetry.io/otel/trace v1.3.0/go.mod h1:c/VDhno8888bvQYmbYLqe41/Ldmr/KKunbvWM4/fEjk=
 go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
+go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
 go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
 go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/automaxprocs v1.4.0 h1:CpDZl6aOlLhReez+8S3eEotD7Jx0Os++lemPlMULQP0=
 go.uber.org/automaxprocs v1.4.0/go.mod h1:/mTEdr7LvHhs0v7mjdxDreTz1OG5zdZGqgOnhWiR/+Q=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
+go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU=
 go.uber.org/multierr v1.6.0 h1:y6IPFStTAIT5Ytl7/XYmHvzXQ7S3g/IeZW9hyZ5thw4=
 go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
+go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
+go.uber.org/zap v1.15.0/go.mod h1:Mb2vm2krFEG5DV0W9qcHBYFtp/Wku1cvYaqPsS/WYfc=
 go.uber.org/zap v1.17.0 h1:MTjgFu6ZLKvY6Pvaqk97GlxNBuMpV4Hy/3P6tRGlI2U=
 go.uber.org/zap v1.17.0/go.mod h1:MXVU+bhUf/A7Xi2HNOnopQOrmycQ5Ih87HtOu4q5SSo=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
@@ -1041,6 +1056,7 @@ golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190329151228-23e29df326fe/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190416151739-9c9e1878f421/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
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@@ -1057,6 +1073,8 @@ golang.org/x/tools v0.0.0-20190816200558-6889da9d5479/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20190907020128-2ca718005c18/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20190911174233-4f2ddba30aff/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191113191852-77e3bb0ad9e7/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191115202509-3a792d9c32b2/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
@@ -1271,10 +1289,12 @@ gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMy
 gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE=
 gopkg.in/go-playground/validator.v8 v8.18.2/go.mod h1:RX2a/7Ha8BgOhfk7j780h4/u/RRjR0eouCJSH80/M2Y=
 gopkg.in/go-playground/validator.v9 v9.29.1/go.mod h1:+c9/zcJMFNgbLvly1L1V+PpxWdVbfP1avr/N00E2vyQ=
+gopkg.in/ini.v1 v1.42.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/ini.v1 v1.66.2 h1:XfR1dOYubytKy4Shzc2LHrrGhU0lDCfDGG1yLPmpgsI=
 gopkg.in/ini.v1 v1.66.2/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/mail.v2 v2.3.1 h1:WYFn/oANrAGP2C0dcV6/pbkPzv8yGzqTjPmTeO7qoXk=
 gopkg.in/mail.v2 v2.3.1/go.mod h1:htwXN1Qh09vZJ1NVKxQqHPBaCBbzKhp5GzuJEA4VJWw=
+gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

pkg/client/nacosclient/client.go

@@ -0,0 +1,73 @@
+package nacosclient
+
+import (
+	"fmt"
+
+	"github.com/nacos-group/nacos-sdk-go/clients"
+	"github.com/nacos-group/nacos-sdk-go/clients/naming_client"
+	"github.com/nacos-group/nacos-sdk-go/common/constant"
+	"github.com/nacos-group/nacos-sdk-go/vo"
+
+	"github.com/go-eagle/eagle/pkg/config"
+)
+
+// Config consul config
+type Config struct {
+	Addr        string
+	Port        uint64
+	NamespaceId string // default public
+	TimeoutMs   uint64 // unit: default 10000ms
+	LogDir      string
+	CacheDir    string
+	LogLevel    string // default value is info
+}
+
+func New() (naming_client.INamingClient, error) {
+	cfg, err := loadConf()
+	if err != nil {
+		panic(fmt.Sprintf("[etcd] load consul conf err: %v", err))
+	}
+	return newClient(cfg)
+}
+
+func newClient(cfg *Config) (naming_client.INamingClient, error) {
+	sc := []constant.ServerConfig{
+		*constant.NewServerConfig(cfg.Addr, cfg.Port),
+	}
+
+	cc := &constant.ClientConfig{
+		NamespaceId:         cfg.NamespaceId,
+		TimeoutMs:           cfg.TimeoutMs,
+		NotLoadCacheAtStart: true,
+		LogDir:              cfg.LogDir,
+		CacheDir:            cfg.CacheDir,
+		LogLevel:            cfg.LogLevel,
+	}
+
+	cli, err := clients.NewNamingClient(
+		vo.NacosClientParam{
+			ClientConfig:  cc,
+			ServerConfigs: sc,
+		},
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	return cli, nil
+}
+
+// loadConf load register config
+func loadConf() (ret *Config, err error) {
+	var cfg Config
+	v, err := config.LoadWithType("registry", config.FileTypeYaml)
+	if err != nil {
+		return nil, err
+	}
+
+	err = v.UnmarshalKey("nacos", &cfg)
+	if err != nil {
+		return nil, err
+	}
+	return &cfg, nil
+}

pkg/registry/nacos/registry.go

@@ -0,0 +1,192 @@
+package nacos
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/url"
+	"strconv"
+
+	"github.com/nacos-group/nacos-sdk-go/clients/naming_client"
+	"github.com/nacos-group/nacos-sdk-go/common/constant"
+	"github.com/nacos-group/nacos-sdk-go/vo"
+
+	"github.com/go-eagle/eagle/pkg/registry"
+)
+
+var (
+	_ registry.Registry  = (*Registry)(nil)
+	_ registry.Discovery = (*Registry)(nil)
+)
+
+type options struct {
+	prefix  string
+	weight  float64
+	cluster string
+	group   string
+	kind    string
+}
+
+// Option is nacos option.
+type Option func(o *options)
+
+// WithPrefix with prefix path.
+func WithPrefix(prefix string) Option {
+	return func(o *options) { o.prefix = prefix }
+}
+
+// WithWeight with weight option.
+func WithWeight(weight float64) Option {
+	return func(o *options) { o.weight = weight }
+}
+
+// WithCluster with cluster option.
+func WithCluster(cluster string) Option {
+	return func(o *options) { o.cluster = cluster }
+}
+
+// WithGroup with group option.
+func WithGroup(group string) Option {
+	return func(o *options) { o.group = group }
+}
+
+// WithDefaultKind with default kind option.
+func WithDefaultKind(kind string) Option {
+	return func(o *options) { o.kind = kind }
+}
+
+// Registry is nacos registry.
+type Registry struct {
+	opts options
+	cli  naming_client.INamingClient
+}
+
+// New new a nacos registry.
+func New(cli naming_client.INamingClient, opts ...Option) (r *Registry) {
+	op := options{
+		prefix:  "/microservices",
+		cluster: "DEFAULT",
+		group:   constant.DEFAULT_GROUP,
+		weight:  100,
+		kind:    "grpc",
+	}
+	for _, option := range opts {
+		option(&op)
+	}
+	return &Registry{
+		opts: op,
+		cli:  cli,
+	}
+}
+
+// Register the registration.
+func (r *Registry) Register(_ context.Context, si *registry.ServiceInstance) error {
+	if si.Name == "" {
+		return fmt.Errorf("eagle/nacos: serviceInstance.name can not be empty")
+	}
+	for _, endpoint := range si.Endpoints {
+		u, err := url.Parse(endpoint)
+		if err != nil {
+			return err
+		}
+		host, port, err := net.SplitHostPort(u.Host)
+		if err != nil {
+			return err
+		}
+		p, err := strconv.Atoi(port)
+		if err != nil {
+			return err
+		}
+		var rmd map[string]string
+		if si.Metadata == nil {
+			rmd = map[string]string{
+				"kind":    u.Scheme,
+				"version": si.Version,
+			}
+		} else {
+			rmd = make(map[string]string, len(si.Metadata)+2)
+			for k, v := range si.Metadata {
+				rmd[k] = v
+			}
+			rmd["kind"] = u.Scheme
+			rmd["version"] = si.Version
+		}
+		_, e := r.cli.RegisterInstance(vo.RegisterInstanceParam{
+			Ip:          host,
+			Port:        uint64(p),
+			ServiceName: si.Name + "." + u.Scheme,
+			Weight:      r.opts.weight,
+			Enable:      true,
+			Healthy:     true,
+			Ephemeral:   true,
+			Metadata:    rmd,
+			ClusterName: r.opts.cluster,
+			GroupName:   r.opts.group,
+		})
+		if e != nil {
+			return fmt.Errorf("RegisterInstance err %v,%v", e, endpoint)
+		}
+	}
+	return nil
+}
+
+// Deregister the registration.
+func (r *Registry) Deregister(_ context.Context, service *registry.ServiceInstance) error {
+	for _, endpoint := range service.Endpoints {
+		u, err := url.Parse(endpoint)
+		if err != nil {
+			return err
+		}
+		host, port, err := net.SplitHostPort(u.Host)
+		if err != nil {
+			return err
+		}
+		p, err := strconv.Atoi(port)
+		if err != nil {
+			return err
+		}
+		if _, err = r.cli.DeregisterInstance(vo.DeregisterInstanceParam{
+			Ip:          host,
+			Port:        uint64(p),
+			ServiceName: service.Name + "." + u.Scheme,
+			GroupName:   r.opts.group,
+			Cluster:     r.opts.cluster,
+			Ephemeral:   true,
+		}); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Watch creates a watcher according to the service name.
+func (r *Registry) Watch(ctx context.Context, serviceName string) (registry.Watcher, error) {
+	return newWatcher(ctx, r.cli, serviceName, r.opts.group, r.opts.kind, []string{r.opts.cluster})
+}
+
+// GetService return the service instances in memory according to the service name.
+func (r *Registry) GetService(_ context.Context, serviceName string) ([]*registry.ServiceInstance, error) {
+	res, err := r.cli.SelectInstances(vo.SelectInstancesParam{
+		ServiceName: serviceName,
+		GroupName:   r.opts.group,
+		HealthyOnly: true,
+	})
+	if err != nil {
+		return nil, err
+	}
+	items := make([]*registry.ServiceInstance, 0, len(res))
+	for _, in := range res {
+		kind := r.opts.kind
+		if k, ok := in.Metadata["kind"]; ok {
+			kind = k
+		}
+		items = append(items, &registry.ServiceInstance{
+			ID:        in.InstanceId,
+			Name:      in.ServiceName,
+			Version:   in.Metadata["version"],
+			Metadata:  in.Metadata,
+			Endpoints: []string{fmt.Sprintf("%s://%s:%d", kind, in.Ip, in.Port)},
+		})
+	}
+	return items, nil
+}

pkg/registry/nacos/watcher.go

@@ -0,0 +1,87 @@
+package nacos
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/nacos-group/nacos-sdk-go/clients/naming_client"
+	"github.com/nacos-group/nacos-sdk-go/model"
+	"github.com/nacos-group/nacos-sdk-go/vo"
+
+	"github.com/go-eagle/eagle/pkg/registry"
+)
+
+var _ registry.Watcher = (*watcher)(nil)
+
+type watcher struct {
+	serviceName string
+	clusters    []string
+	groupName   string
+	ctx         context.Context
+	cancel      context.CancelFunc
+	watchChan   chan struct{}
+	cli         naming_client.INamingClient
+	kind        string
+}
+
+func newWatcher(ctx context.Context, cli naming_client.INamingClient, serviceName, groupName, kind string, clusters []string) (*watcher, error) {
+	w := &watcher{
+		serviceName: serviceName,
+		clusters:    clusters,
+		groupName:   groupName,
+		cli:         cli,
+		kind:        kind,
+		watchChan:   make(chan struct{}, 1),
+	}
+	w.ctx, w.cancel = context.WithCancel(ctx)
+
+	e := w.cli.Subscribe(&vo.SubscribeParam{
+		ServiceName: serviceName,
+		Clusters:    clusters,
+		GroupName:   groupName,
+		SubscribeCallback: func(services []model.SubscribeService, err error) {
+			w.watchChan <- struct{}{}
+		},
+	})
+	return w, e
+}
+
+func (w *watcher) Next() ([]*registry.ServiceInstance, error) {
+	select {
+	case <-w.ctx.Done():
+		return nil, w.ctx.Err()
+	case <-w.watchChan:
+	}
+	res, err := w.cli.GetService(vo.GetServiceParam{
+		ServiceName: w.serviceName,
+		GroupName:   w.groupName,
+		Clusters:    w.clusters,
+	})
+	if err != nil {
+		return nil, err
+	}
+	items := make([]*registry.ServiceInstance, 0, len(res.Hosts))
+	for _, in := range res.Hosts {
+		kind := w.kind
+		if k, ok := in.Metadata["kind"]; ok {
+			kind = k
+		}
+		items = append(items, &registry.ServiceInstance{
+			ID:        in.InstanceId,
+			Name:      res.Name,
+			Version:   in.Metadata["version"],
+			Metadata:  in.Metadata,
+			Endpoints: []string{fmt.Sprintf("%s://%s:%d", kind, in.Ip, in.Port)},
+		})
+	}
+	return items, nil
+}
+
+func (w *watcher) Stop() error {
+	w.cancel()
+	return w.cli.Unsubscribe(&vo.SubscribeParam{
+		ServiceName: w.serviceName,
+		GroupName:   w.groupName,
+		Clusters:    w.clusters,
+	})
+}