feat(migrate): containr migrate railway — GraphQL import of services/vars/domains

--token (or RAILWAY_TOKEN) reads the Railway project via backboard GraphQL: services resolve to git-repo or image services with command + replicas, variables and service/custom domains follow. --dry-run prints the plan; --into targets an existing project. Both account (Bearer) and project tokens (Project-Access-Token header) work. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
2026-10-28 15:51:26 +00:00 · 2026-10-09 12:29:45 +02:00
1 parent 7547375cc2
commit bcb4d30d1a
@@ -0,0 +1,372 @@
+package commands
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/spf13/cobra"
+)
+
+const railwayAPI = "https://backboard.railway.com/graphql/v2"
+
+// railwaySource mirrors the Railway serviceInstance.source union.
+type railwaySource struct {
+	Repo  string `json:"repo"`
+	Image string `json:"image"`
+}
+
+type railwayServicePlan struct {
+	ID        string
+	Name      string
+	Source    railwaySource
+	Command   string
+	Replicas  int
+	Domains   []string
+	Variables map[string]string
+}
+
+// MigrateCmd imports workloads from other platforms.
+var MigrateCmd = &cobra.Command{
+	Use:   "migrate",
+	Short: "Import workloads from other platforms",
+}
+
+var migrateRailwayCmd = &cobra.Command{
+	Use:   "railway",
+	Short: "Migrate a Railway project into Containr",
+	Long: `Pulls a Railway project's services, variables, and domains via the
+public GraphQL API and recreates them in Containr.
+
+  containr migrate railway --token <railway-token> --project <id> --dry-run
+  containr migrate railway --token <railway-token> --project <id> --into <project-id>
+
+Token: account/workspace token (Authorization: Bearer) or a project token.
+--into defaults to creating a project named after the Railway project.`,
+	Args: cobra.NoArgs,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		token, _ := cmd.Flags().GetString("token")
+		if token == "" {
+			token = os.Getenv("RAILWAY_TOKEN")
+		}
+		if token == "" {
+			return &APIError{Message: "pass --token or set RAILWAY_TOKEN", ExitCode: ExitError}
+		}
+		projectID, _ := cmd.Flags().GetString("project")
+		envName, _ := cmd.Flags().GetString("environment")
+		into, _ := cmd.Flags().GetString("into")
+		dryRun, _ := cmd.Flags().GetBool("dry-run")
+
+		projectName, envID, services, err := railwayProject(projectID, envName, token)
+		if err != nil {
+			return err
+		}
+		if len(services) == 0 {
+			return &APIError{Message: "no services found in that Railway project/environment", ExitCode: ExitError}
+		}
+
+		plans := make([]railwayServicePlan, 0, len(services))
+		for _, svc := range services {
+			plan, err := railwayServiceDetail(svc, envID, token)
+			if err != nil {
+				fmt.Fprintf(os.Stderr, "warning: %s: %v — skipping\n", svc["name"], err)
+				continue
+			}
+			plans = append(plans, plan)
+		}
+		if len(plans) == 0 {
+			return &APIError{Message: "no migratable services", ExitCode: ExitError}
+		}
+
+		fmt.Printf("Railway project %q → %d service(s)\n", projectName, len(plans))
+		for _, p := range plans {
+			src := p.Source.Image
+			if src == "" {
+				src = railwayRepoURL(p.Source.Repo)
+			}
+			fmt.Printf("  %s  src=%s replicas=%d vars=%d domains=%d\n",
+				p.Name, src, max(p.Replicas, 1), len(p.Variables), len(p.Domains))
+		}
+
+		if dryRun {
+			fmt.Println("\nDry run — pass without --dry-run to create these resources.")
+			return nil
+		}
+
+		c, err := client()
+		if err != nil {
+			return err
+		}
+
+		target := into
+		if target == "" {
+			data, err := c.Do("POST", "/projects", map[string]interface{}{
+				"name":        projectName,
+				"description": "Imported from Railway",
+			})
+			if err != nil {
+				return err
+			}
+			p, _ := unwrapObject(data, "project")
+			target = str(p, "id")
+			if target == "" || target == "-" {
+				return &APIError{Message: "project created but id missing from response", ExitCode: ExitError}
+			}
+			fmt.Printf("Created project %s (%s)\n", projectName, target)
+		}
+
+		for _, p := range plans {
+			body := map[string]interface{}{"name": p.Name}
+			if p.Source.Image != "" {
+				body["type"] = "image"
+				body["image"] = p.Source.Image
+			} else if repo := railwayRepoURL(p.Source.Repo); repo != "" {
+				body["type"] = "git"
+				body["git_repo"] = repo
+			} else {
+				fmt.Fprintf(os.Stderr, "warning: %s has no source — skipping\n", p.Name)
+				continue
+			}
+			if p.Command != "" {
+				body["command"] = p.Command
+			}
+			if p.Replicas > 1 {
+				body["replicas"] = p.Replicas
+			}
+			data, err := c.Do("POST", "/projects/"+target+"/services", body)
+			if err != nil {
+				fmt.Fprintf(os.Stderr, "error: create %s: %v\n", p.Name, err)
+				continue
+			}
+			svc, _ := unwrapObject(data, "service")
+			svcID := str(svc, "id")
+			fmt.Printf("  created service %s (%s)\n", p.Name, svcID)
+
+			if len(p.Variables) > 0 && svcID != "" && svcID != "-" {
+				vars := make([]map[string]interface{}, 0, len(p.Variables))
+				for k, v := range p.Variables {
+					vars = append(vars, map[string]interface{}{"key": k, "value": v, "is_secret": false})
+				}
+				if _, err := c.Do("PUT", "/services/"+svcID+"/variables",
+					map[string]interface{}{"variables": vars}); err != nil {
+					fmt.Fprintf(os.Stderr, "  warning: variables for %s: %v\n", p.Name, err)
+				}
+			}
+			for _, domain := range p.Domains {
+				if svcID == "" || svcID == "-" {
+					break
+				}
+				if _, err := c.Do("POST", "/services/"+svcID+"/domains",
+					map[string]interface{}{"domain": domain}); err != nil {
+					fmt.Fprintf(os.Stderr, "  warning: domain %s: %v\n", domain, err)
+				}
+			}
+		}
+		fmt.Println("Done. Railway deploy triggers are not migrated — redeploy each service when ready.")
+		return nil
+	},
+}
+
+// railwayGraphQL posts a query; Railway returns 200 with an errors array on
+// partial failures — treat errors as fatal, the migration needs clean data.
+func railwayGraphQL(token, query string, variables map[string]interface{}) (map[string]interface{}, error) {
+	body, _ := json.Marshal(map[string]interface{}{"query": query, "variables": variables})
+	req, err := http.NewRequest(http.MethodPost, railwayAPI, bytes.NewReader(body))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	// Project tokens use a dedicated header; account/workspace tokens use Bearer.
+	if strings.HasPrefix(token, "rw_pat") || strings.HasPrefix(token, "rw_pt") {
+		req.Header.Set("Project-Access-Token", token)
+	} else {
+		req.Header.Set("Authorization", "Bearer "+token)
+	}
+	client := &http.Client{Timeout: 30 * time.Second}
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	raw, _ := io.ReadAll(io.LimitReader(resp.Body, 4<<20))
+	var out struct {
+		Data   map[string]interface{} `json:"data"`
+		Errors []struct {
+			Message string `json:"message"`
+		} `json:"errors"`
+	}
+	if err := json.Unmarshal(raw, &out); err != nil {
+		return nil, fmt.Errorf("railway response not JSON (status %d)", resp.StatusCode)
+	}
+	if len(out.Errors) > 0 {
+		return nil, fmt.Errorf("railway: %s", out.Errors[0].Message)
+	}
+	if resp.StatusCode >= 300 {
+		return nil, fmt.Errorf("railway status %d", resp.StatusCode)
+	}
+	return out.Data, nil
+}
+
+// railwayProject resolves the project (by id, or sole accessible project) and
+// returns its name, the target environment id, and its services.
+func railwayProject(projectID, envName, token string) (string, string, []map[string]interface{}, error) {
+	if projectID == "" {
+		data, err := railwayGraphQL(token,
+			`query { projects(first: 100) { edges { node { id name } } } }`, nil)
+		if err != nil {
+			return "", "", nil, err
+		}
+		projects := edgesOf(data, "projects")
+		if len(projects) == 1 {
+			projectID = str(projects[0], "id")
+		} else {
+			for _, p := range projects {
+				fmt.Fprintf(os.Stderr, "  %s  %s\n", str(p, "id"), str(p, "name"))
+			}
+			return "", "", nil, &APIError{
+				Message:  "multiple projects — pass --project <id> (listed above)",
+				ExitCode: ExitError,
+			}
+		}
+	}
+
+	data, err := railwayGraphQL(token, `query ($id: String!) {
+		project(id: $id) {
+			name
+			environments { edges { node { id name } } }
+			services { edges { node { id name } } }
+		}
+	}`, map[string]interface{}{"id": projectID})
+	if err != nil {
+		return "", "", nil, err
+	}
+	project, _ := data["project"].(map[string]interface{})
+	if project == nil {
+		return "", "", nil, &APIError{Message: "railway project not found", ExitCode: ExitNotFound}
+	}
+	envs := edgesOf(project, "environments")
+	envID := ""
+	for _, e := range envs {
+		if str(e, "name") == envName {
+			envID = str(e, "id")
+			break
+		}
+	}
+	if envID == "" && len(envs) == 1 {
+		envID = str(envs[0], "id")
+	}
+	if envID == "" {
+		names := make([]string, 0, len(envs))
+		for _, e := range envs {
+			names = append(names, str(e, "name"))
+		}
+		return "", "", nil, &APIError{
+			Message:  fmt.Sprintf("environment %q not found (have: %s)", envName, strings.Join(names, ", ")),
+			ExitCode: ExitError,
+		}
+	}
+	return str(project, "name"), envID, edgesOf(project, "services"), nil
+}
+
+// railwayServiceDetail pulls source, command, replicas, domains, and
+// variables for one service in the target environment.
+func railwayServiceDetail(svc map[string]interface{}, envID, token string) (railwayServicePlan, error) {
+	plan := railwayServicePlan{
+		ID:   str(svc, "id"),
+		Name: str(svc, "name"),
+	}
+	data, err := railwayGraphQL(token, `query ($sid: String!, $eid: String!) {
+		serviceInstance(serviceId: $sid, environmentId: $eid) {
+			startCommand
+			numReplicas
+			source { repo image }
+			domains { serviceDomains { domain } customDomains { domain } }
+		}
+	}`, map[string]interface{}{"sid": plan.ID, "eid": envID})
+	if err != nil {
+		return plan, err
+	}
+	inst, _ := data["serviceInstance"].(map[string]interface{})
+	if inst == nil {
+		return plan, fmt.Errorf("no service instance in this environment")
+	}
+	if src, ok := inst["source"].(map[string]interface{}); ok {
+		plan.Source = railwaySource{Repo: str(src, "repo"), Image: str(src, "image")}
+	}
+	if cmd, ok := inst["startCommand"].(string); ok {
+		plan.Command = cmd
+	}
+	if n, ok := inst["numReplicas"].(float64); ok {
+		plan.Replicas = int(n)
+	}
+	if domains, ok := inst["domains"].(map[string]interface{}); ok {
+		for _, group := range []string{"serviceDomains", "customDomains"} {
+			if list, ok := domains[group].([]interface{}); ok {
+				for _, d := range list {
+					if m, ok := d.(map[string]interface{}); ok {
+						if dom := str(m, "domain"); dom != "" && dom != "-" {
+							plan.Domains = append(plan.Domains, dom)
+						}
+					}
+				}
+			}
+		}
+	}
+
+	vdata, err := railwayGraphQL(token, `query ($sid: String!, $eid: String!) {
+		variables(serviceId: $sid, environmentId: $eid)
+	}`, map[string]interface{}{"sid": plan.ID, "eid": envID})
+	if err == nil {
+		if vars, ok := vdata["variables"].(map[string]interface{}); ok {
+			plan.Variables = map[string]string{}
+			for k, v := range vars {
+				if s, ok := v.(string); ok {
+					// Railway reference variables (${{…}}) resolve at deploy
+					// time — carry them literally so they stay visible.
+					plan.Variables[k] = s
+				}
+			}
+		}
+	}
+	return plan, nil
+}
+
+// railwayRepoURL normalizes Railway's "owner/repo" to a cloneable https URL.
+func railwayRepoURL(repo string) string {
+	repo = strings.TrimSpace(repo)
+	if repo == "" || repo == "-" {
+		return ""
+	}
+	if strings.Contains(repo, "://") || strings.HasPrefix(repo, "git@") {
+		return repo
+	}
+	return "https://github.com/" + repo
+}
+
+func edgesOf(obj map[string]interface{}, key string) []map[string]interface{} {
+	conn, _ := obj[key].(map[string]interface{})
+	edges, _ := conn["edges"].([]interface{})
+	out := make([]map[string]interface{}, 0, len(edges))
+	for _, e := range edges {
+		if m, ok := e.(map[string]interface{}); ok {
+			if node, ok := m["node"].(map[string]interface{}); ok {
+				out = append(out, node)
+			}
+		}
+	}
+	return out
+}
+
+func init() {
+	migrateRailwayCmd.Flags().String("token", "", "Railway API token (or RAILWAY_TOKEN env)")
+	migrateRailwayCmd.Flags().String("project", "", "Railway project id (lists yours when omitted and >1 exists)")
+	migrateRailwayCmd.Flags().String("environment", "production", "Railway environment name")
+	migrateRailwayCmd.Flags().String("into", "", "existing Containr project id (default: create one)")
+	migrateRailwayCmd.Flags().Bool("dry-run", false, "print the plan without creating anything")
+	MigrateCmd.AddCommand(migrateRailwayCmd)
+}
@@ -0,0 +1,40 @@
+package commands
+
+import "testing"
+
+func TestRailwayRepoURL(t *testing.T) {
+	cases := map[string]string{
+		"owner/repo":             "https://github.com/owner/repo",
+		"https://gitlab.com/a/b": "https://gitlab.com/a/b",
+		"[email protected]:a/b.git": "[email protected]:a/b.git",
+		"":                       "",
+		"-":                      "",
+		"  spaced/x  ":           "https://github.com/spaced/x",
+	}
+	for in, want := range cases {
+		if got := railwayRepoURL(in); got != want {
+			t.Errorf("railwayRepoURL(%q) = %q, want %q", in, got, want)
+		}
+	}
+}
+
+func TestEdgesOf(t *testing.T) {
+	obj := map[string]interface{}{
+		"services": map[string]interface{}{
+			"edges": []interface{}{
+				map[string]interface{}{"node": map[string]interface{}{"id": "a", "name": "web"}},
+				map[string]interface{}{"node": map[string]interface{}{"id": "b", "name": "api"}},
+			},
+		},
+	}
+	nodes := edgesOf(obj, "services")
+	if len(nodes) != 2 || str(nodes[0], "name") != "web" {
+		t.Fatalf("edgesOf returned %+v", nodes)
+	}
+	if got := edgesOf(obj, "missing"); len(got) != 0 {
+		t.Fatalf("edgesOf(missing) = %+v, want empty", got)
+	}
+	if got := edgesOf(map[string]interface{}{"services": nil}, "services"); len(got) != 0 {
+		t.Fatalf("edgesOf(nil conn) = %+v, want empty", got)
+	}
+}
@@ -94,6 +94,7 @@ func init() {
 	rootCmd.AddCommand(commands.BannersCmd)
 	rootCmd.AddCommand(commands.InvitesCmd)
 	rootCmd.AddCommand(commands.UpCmd)
+	rootCmd.AddCommand(commands.MigrateCmd)
 }

 func initConfig() {