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Using neelance/graphql-go
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‎CHANGELOG.md

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# Changelog
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All notable changes to this project will be documented in this file.
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The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
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and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
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## [Unreleased]
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## [0.1.0] 2017-09-13
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- [SystemVersion type](resources/schema/system.graphql#L6) is the only query-ready field for now.
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### Changed
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- Using [neelance/graphql-go](https://github.com/neelance/graphql-go).
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- `API_ENDPOINT` is now `UI_ENDPOINT`.
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- `GQL_PORT` is available again.
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### Removed
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- No longer using [graphql-go/graphql](https://github.com/graphql-go/graphql)
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## [0.1.0-rc] 2017-09-11
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### Added
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- Start using a changelog file in order to keep a neat track of every change made to the project.
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- [Version type](resources/schema/system.graphql#L6) is the only query-ready field for now.
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### Changed
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- Moving from [graphql-go/graphql](https://github.com/graphql-go/graphql) to [neelance/graphql-go](https://github.com/neelance/graphql-go).
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- `API_ENDPOINT`, `GQL_PORT` & `GRAPHIQL` are temporarily unavailable to be set in the Docker image.
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### Removed
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- No longer using [graphql-go/graphql](https://github.com/graphql-go/graphql)

‎cmd/gdapi/main.go

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package main
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import (
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"log"
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"net/http"
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"os"
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"github.com/gorilla/handlers"
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graphql "github.com/neelance/graphql-go"
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"github.com/neelance/graphql-go/relay"
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"gitlab.com/klud/graphql-docker-api/resolver"
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"gitlab.com/klud/graphql-docker-api/schema"
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)
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var scheme *graphql.Schema
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// Gets GraphiQL route from UI_ENDPOINT env var, else assigns one by default
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func uiEndpoint() string {
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end := os.Getenv("UI_ENDPOINT")
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if end == "" {
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end = "/graphql"
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}
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return end
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}
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// Gets the port to serve on from GQL_PORT env var, else assigns one by default
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func getPort() string {
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port := os.Getenv("GQL_PORT")
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if port == "" {
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port = ":8080"
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}
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return port
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}
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// Enables GraphiQL by default, if 0 is set GraphiQL is disabled.
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func enableUI() bool {
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env := os.Getenv("GRAPHIQL")
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if env == "0" {
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return false
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}
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return true
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}
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func init() {
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scheme = graphql.MustParseSchema(schema.Schema, &resolver.Resolver{})
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}
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func main() {
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var uiStatus string
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http.Handle("/query", &relay.Handler{Schema: scheme})
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if enableUI() {
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uiStatus = "enabled"
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http.Handle(uiEndpoint(), http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Write(page)
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}))
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log.Printf("Endpoint: /query | GraphiQL: %v | UI route: %v | Serving on %v\n", uiStatus, uiEndpoint(), getPort())
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} else {
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uiStatus = "disabled"
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log.Printf("Endpoint: /query | GraphiQL: %v | Serving on %v\n", uiStatus, getPort())
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}
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// log.Printf("Endpoint: %v | Serving on %v\n", uiEndpoint(), getPort())
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log.Fatalln(http.ListenAndServe(getPort(), handlers.LoggingHandler(os.Stdout, http.DefaultServeMux)))
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}
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var page = []byte(`
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<!DOCTYPE html>
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<html>
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<head>
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.10.2/graphiql.css" />
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<script src="https://cdnjs.cloudflare.com/ajax/libs/fetch/1.1.0/fetch.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.5.4/react.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.5.4/react-dom.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.10.2/graphiql.js"></script>
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</head>
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<body style="width: 100%; height: 100%; margin: 0; overflow: hidden;">
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<div id="graphiql" style="height: 100vh;">Loading...</div>
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<script>
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function graphQLFetcher(graphQLParams) {
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return fetch("/query", {
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method: "post",
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body: JSON.stringify(graphQLParams),
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credentials: "include",
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}).then(function (response) {
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return response.text();
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}).then(function (responseBody) {
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try {
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return JSON.parse(responseBody);
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} catch (error) {
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return responseBody;
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}
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});
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}
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ReactDOM.render(
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React.createElement(GraphiQL, {fetcher: graphQLFetcher}),
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document.getElementById("graphiql")
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);
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</script>
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</body>
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</html>
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`)

‎resolver/resolver.go

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package resolver
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import (
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/client"
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"golang.org/x/net/context"
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)
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var (
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ctx = context.Background()
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)
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type (
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Resolver struct{}
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systemResolver struct {
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system client.Client
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}
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systemVersionResolver struct {
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version types.Version
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}
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)
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func (r *Resolver) System() *systemResolver {
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dkr, _ := client.NewEnvClient()
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return &systemResolver{system: *dkr}
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}
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func (r *systemResolver) Version() *systemVersionResolver {
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v, _ := r.system.ServerVersion(ctx)
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return &systemVersionResolver{version: v}
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}

‎resolver/system.go

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package resolver
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func (r *systemVersionResolver) ApiVersion() string {
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return r.version.APIVersion
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}
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func (r *systemVersionResolver) Arch() string {
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return r.version.Arch
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}
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func (r *systemVersionResolver) BuildTime() string {
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return r.version.BuildTime
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}
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func (r *systemVersionResolver) Experimental() bool {
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return r.version.Experimental
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}
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func (r *systemVersionResolver) GitCommit() string {
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return r.version.GitCommit
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}
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func (r *systemVersionResolver) GoVersion() string {
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return r.version.GoVersion
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}
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func (r *systemVersionResolver) KernelVersion() string {
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return r.version.KernelVersion
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}
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func (r *systemVersionResolver) MinApiVersion() string {
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return r.version.MinAPIVersion
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}
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func (r *systemVersionResolver) Os() string {
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return r.version.Os
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}
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func (r *systemVersionResolver) Version() string {
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return r.version.Version
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}

‎resources/docker-go-graphql_400.png

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