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lmtr0
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new: graphql server with eco
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‎golang-echo-graphql/go.mod

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module server
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go 1.19
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require (
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github.com/graphql-go/graphql v0.8.0 // indirect
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github.com/graphql-go/handler v0.2.3 // indirect
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github.com/labstack/echo/v4 v4.8.0 // indirect
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github.com/labstack/gommon v0.3.1 // indirect
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github.com/mattn/go-colorable v0.1.11 // indirect
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github.com/mattn/go-isatty v0.0.14 // indirect
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github.com/valyala/bytebufferpool v1.0.0 // indirect
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github.com/valyala/fasttemplate v1.2.1 // indirect
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golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 // indirect
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golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f // indirect
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golang.org/x/sys v0.0.0-20211103235746-7861aae1554b // indirect
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golang.org/x/text v0.3.7 // indirect
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)

‎golang-echo-graphql/go.sum

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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/graphql-go/graphql v0.8.0 h1:JHRQMeQjofwqVvGwYnr8JnPTY0AxgVy1HpHSGPLdH0I=
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github.com/graphql-go/graphql v0.8.0/go.mod h1:nKiHzRM0qopJEwCITUuIsxk9PlVlwIiiI8pnJEhordQ=
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github.com/graphql-go/handler v0.2.3 h1:CANh8WPnl5M9uA25c2GBhPqJhE53Fg0Iue/fRNla71E=
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github.com/graphql-go/handler v0.2.3/go.mod h1:leLF6RpV5uZMN1CdImAxuiayrYYhOk33bZciaUGaXeU=
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github.com/labstack/echo/v4 v4.8.0 h1:wdc6yKVaHxkNOEdz4cRZs1pQkwSXPiRjq69yWP4QQS8=
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github.com/labstack/echo/v4 v4.8.0/go.mod h1:xkCDAdFCIf8jsFQ5NnbK7oqaF/yU1A1X20Ltm0OvSks=
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github.com/labstack/gommon v0.3.1 h1:OomWaJXm7xR6L1HmEtGyQf26TEn7V6X88mktX9kee9o=
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github.com/labstack/gommon v0.3.1/go.mod h1:uW6kP17uPlLJsD3ijUYn3/M5bAxtlZhMI6m3MFxTMTM=
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github.com/mattn/go-colorable v0.1.11 h1:nQ+aFkoE2TMGc0b68U2OKSexC+eq46+XwZzWXHRmPYs=
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github.com/mattn/go-colorable v0.1.11/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4=
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github.com/mattn/go-isatty v0.0.14 h1:yVuAays6BHfxijgZPzw+3Zlu5yQgKGP2/hcQbHb7S9Y=
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github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
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github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
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github.com/valyala/fasttemplate v1.2.1 h1:TVEnxayobAdVkhQfrfes2IzOB6o+z4roRkPF52WA1u4=
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github.com/valyala/fasttemplate v1.2.1/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
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golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 h1:HWj/xjIHfjYU5nVXpTM0s39J9CbLn7Cc5a7IC5rwsMQ=
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golang.org/x/crypto v0.0.0-20210817164053-32db794688a5/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
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golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f h1:OfiFi4JbukWwe3lzw+xunroH1mnC1e2Gy5cxNJApiSY=
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golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
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golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.0.0-20211103235746-7861aae1554b h1:1VkfZQv42XQlA/jchYumAnv1UPo6RgF9rJFkTgZIxO4=
29+
golang.org/x/sys v0.0.0-20211103235746-7861aae1554b/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
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golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

‎golang-echo-graphql/graphql/fields/users.go

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package fields
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import (
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model "server/models"
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"github.com/graphql-go/graphql"
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)
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var user = graphql.NewObject(
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graphql.ObjectConfig{
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Name: "User",
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Fields: graphql.Fields{
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"id": &graphql.Field{Type: graphql.ID},
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"name": &graphql.Field{Type: graphql.String},
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"age": &graphql.Field{Type: graphql.String},
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},
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Description: "Users data",
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},
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)
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func NewUsers() *graphql.Field {
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return &graphql.Field{
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Type: graphql.NewList(user),
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Resolve: func(p graphql.ResolveParams) (i interface{}, e error) {
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var u []*model.User = []*model.User{
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{
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Id: "id1",
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Name: "User 1",
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Age: 15,
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},
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{
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Id: "id2",
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Name: "User 2",
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Age: 32,
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},
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{
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Id: "id2",
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Name: "User 3",
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Age: 24,
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},
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}
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return u, nil
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},
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Description: "user",
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}
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}

‎golang-echo-graphql/graphql/graphql.go

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package graphql
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import (
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"log"
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"github.com/labstack/echo/v4"
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)
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func Route(e *echo.Echo) {
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h, err := NewHandler()
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if err != nil {
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log.Fatal(err)
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}
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e.POST("/gql", echo.WrapHandler(h))
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e.GET("/gql", echo.WrapHandler(h))
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}

‎golang-echo-graphql/graphql/handler.go

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package graphql
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import (
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"fmt"
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"github.com/graphql-go/graphql"
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"github.com/graphql-go/handler"
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)
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func NewHandler() (*handler.Handler, error) {
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schema, err := graphql.NewSchema(
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graphql.SchemaConfig{
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Query: newQuery(),
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},
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)
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if err != nil {
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fmt.Println("Failed to initialize graphql server")
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return nil, err
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}
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fmt.Println("initialized graphql server")
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return handler.New(&handler.Config{
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Schema: &schema,
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Pretty: true,
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// GraphiQL: true,
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Playground: true,
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}), nil
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}

‎golang-echo-graphql/graphql/query.go

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package graphql
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import (
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"server/graphql/fields"
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"github.com/graphql-go/graphql"
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)
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func newQuery() *graphql.Object {
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return graphql.NewObject(graphql.ObjectConfig{
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Name: "Query",
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Fields: graphql.Fields{
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"users": fields.NewUsers(),
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},
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})
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}

‎golang-echo-graphql/handler.go

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package main
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import (
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"net/http"
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"github.com/labstack/echo/v4"
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)
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func Welcome() echo.HandlerFunc {
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return func(c echo.Context) error {
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return c.String(http.StatusOK, "Welcome!")
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}
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}

‎golang-echo-graphql/main.go

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package main
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import (
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"fmt"
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"net/http"
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"server/graphql"
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"github.com/labstack/echo/v4"
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)
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func main() {
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// Echo instance
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e := echo.New()
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// Routes
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e.GET("/", Welcome())
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// graphql handler
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fmt.Println("Graphql Endpoint")
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graphql.Route(e)
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fmt.Println("Ended Graphql Endpoint")
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// Start server
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e.Logger.Fatal(e.Start(":3000"))
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}
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// Handler
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func hello(c echo.Context) error {
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return c.String(http.StatusOK, "Hello, World!")
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}

‎golang-echo-graphql/models/user.go

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package model
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type User struct {
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Id string `json:"id"`
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Name string `json:"name"`
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Age int64 `json:"age"`
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}

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