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main.go
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main.go
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package main
import (
"bytes"
"context"
"database/sql"
"embed"
"encoding/base64"
"encoding/json"
"io"
"log"
"net/http"
"os"
"path/filepath"
"strconv"
"strings"
"time"
"fmt"
"server/zjson"
"github.com/gin-gonic/gin"
"github.com/google/uuid"
"github.com/gorilla/websocket"
"github.com/invopop/jsonschema"
_ "github.com/mattn/go-sqlite3"
"github.com/pressly/goose/v3"
"github.com/xeipuuv/gojsonschema"
"k8s.io/client-go/tools/clientcmd"
clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
"github.com/getsentry/sentry-go"
sentrygin "github.com/getsentry/sentry-go/gin"
)
//go:embed db/migrations/*.sql
var migrations embed.FS
type Config struct {
IsLocal bool
IsDev bool
ServerPort int
KanikoImage string
WorkDir string
FileDir string
ComputationFile string
EntrypointFile string
ServiceAccount string
Bucket string
Database string
SetupVersion string
Local Local `json:"Local,omitempty"`
Cloud Cloud `json:"Cloud,omitempty"`
}
type Local struct {
BucketPort int
Driver string
}
type Cloud struct {
Registry string
RegistryAddr string
RegistryUser string
RegistryPass string
ClusterIP string
Token string
CaCert string
}
type WebSocketWriter struct {
PipelineId string
MessageFunc func(string, string)
// Add other fields as needed
}
func (w *WebSocketWriter) Write(p []byte) (n int, err error) {
message := string(p)
w.MessageFunc(message, w.PipelineId)
return len(p), nil
}
func createLogger(pipelineId string, file io.Writer, messageFunc func(string, string)) io.Writer {
wsWriter := &WebSocketWriter{
PipelineId: pipelineId,
MessageFunc: messageFunc,
}
return io.MultiWriter(os.Stdout, wsWriter, file)
}
func validateJson[D any](body io.ReadCloser) (D, HTTPError) {
var data D
schema, err := json.Marshal(jsonschema.Reflect(data))
if err != nil { // Should never happen outside of development
return data, InternalServerError{err.Error()}
}
buffer := new(bytes.Buffer)
buffer.ReadFrom(body)
schemaLoader := gojsonschema.NewStringLoader(string(schema))
jsonLoader := gojsonschema.NewStringLoader(buffer.String())
result, err := gojsonschema.Validate(schemaLoader, jsonLoader)
if err != nil {
return data, InternalServerError{err.Error()}
}
if !result.Valid() {
var listError []string
for _, error := range result.Errors() {
listError = append(listError, error.String())
}
stringError := strings.Join(listError, "\n")
return data, BadRequest{stringError}
}
if err := json.Unmarshal(buffer.Bytes(), &data); err != nil {
return data, InternalServerError{err.Error()}
}
return data, nil
}
func setupSentry() {
err := sentry.Init(sentry.ClientOptions{
Dsn: "https://7fb18e8e487455a950298625457264f3@o1096443.ingest.us.sentry.io/4507031960223744",
})
if err != nil {
log.Fatalf("Failed to start Sentry; err=%s", err)
}
defer sentry.Flush(2 * time.Second)
}
func main() {
ctx := context.Background()
file, err := os.ReadFile("config.json")
if err != nil {
log.Fatalf("Config file missing; err=%v", err)
return
}
var config Config
if err := json.Unmarshal(file, &config); err != nil {
log.Fatalf("Config file invalid; err=%v", err)
return
}
//Initialize mixpanelClient only once(it's singleton)
mixpanelClient = InitMixpanelClient(ctx, "4c09914a48f08de1dbe3dc4dd2dcf90d", config)
setupSentry()
db, err := sql.Open("sqlite3", config.Database)
if err != nil {
log.Fatalf("Failed to load database; err=%v", err)
}
goose.SetBaseFS(migrations)
if err := goose.SetDialect(string(goose.DialectSQLite3)); err != nil {
log.Fatalf("Failed to set database dialect; err=%v", err)
}
if err := goose.Up(db, "db/migrations"); err != nil {
log.Fatalf("Failed to migrate database; err=%v", err)
}
var client clientcmd.ClientConfig
if config.IsLocal {
client = clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
clientcmd.NewDefaultClientConfigLoadingRules(),
&clientcmd.ConfigOverrides{},
)
// Switching to Cobra if we need more arguments
if len(os.Args) > 1 {
if os.Args[1] == "--uninstall" {
uninstall(ctx, client, db)
return
}
os.Exit(1)
}
setup(ctx, config, client, db)
} else {
cacert, err := base64.StdEncoding.DecodeString(config.Cloud.CaCert)
if err != nil {
log.Fatalf("Invalid CA certificate; err=%v", err)
}
cfg := clientcmdapi.NewConfig()
cfg.Clusters["zetacluster"] = &clientcmdapi.Cluster{
Server: "https://" + config.Cloud.ClusterIP,
CertificateAuthorityData: cacert,
}
cfg.AuthInfos["zetaauth"] = &clientcmdapi.AuthInfo{
Token: config.Cloud.Token,
}
cfg.Contexts["zetacontext"] = &clientcmdapi.Context{
Cluster: "zetacluster",
AuthInfo: "zetaauth",
}
cfg.CurrentContext = "zetacontext"
client = clientcmd.NewDefaultClientConfig(*cfg, &clientcmd.ConfigOverrides{})
}
hub := newHub()
go hub.Run()
router := gin.Default()
// CORS middleware
router.Use(func(c *gin.Context) {
c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
c.Writer.Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, PATCH, DELETE")
c.Writer.Header().Set("Access-Control-Allow-Headers", "Accept, Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization")
// Handle OPTIONS requests for CORS preflight
if c.Request.Method == "OPTIONS" {
c.AbortWithStatus(http.StatusOK)
return
}
c.Next()
})
router.Use(sentrygin.New(sentrygin.Options{}))
router.GET("/ping", func(ctx *gin.Context) {
ctx.String(http.StatusOK, "pong")
})
router.POST("/execute", func(ctx *gin.Context) {
execution, err := validateJson[zjson.Execution](ctx.Request.Body)
if err != nil {
log.Printf("Invalid json request; err=%v", err)
ctx.String(err.Status(), err.Error())
return
}
res, err := createPipeline(ctx.Request.Context(), db, "org", execution.Pipeline)
if err != nil {
log.Printf("Failed to create pipeline; err=%v", err)
ctx.String(err.Status(), err.Error())
return
}
// TODO: client needs to handle file uploading to S3
// along with handling results files
sink := filepath.Join(execution.Pipeline.Sink, "history", execution.Id)
execution.Pipeline.Sink = sink
if config.IsLocal {
go localExecute(&execution.Pipeline, res.ID, execution.Id, execution.Build, config, client, db, hub)
} else {
go cloudExecute(&execution.Pipeline, res.ID, execution.Id, execution.Build, config, client, db, hub)
}
newRes := make(map[string]any)
newRes["executionId"] = execution.Id
newRes["history"] = sink
newRes["pipeline"] = res
ctx.JSON(http.StatusCreated, newRes)
})
router.GET("/ws/:room", func(ctx *gin.Context) {
room := ctx.Param("room")
upgrader := websocket.Upgrader{
CheckOrigin: func(r *http.Request) bool {
// Allow specific origin
origin := r.Header.Get("Origin")
return strings.HasPrefix(origin, "http://localhost") || strings.HasPrefix(origin, "http://127.0.0.1") || strings.HasPrefix(origin, "file://")
},
ReadBufferSize: 1024,
WriteBufferSize: 1024,
}
conn, err := upgrader.Upgrade(ctx.Writer, ctx.Request, nil)
if err != nil {
ctx.String(http.StatusInternalServerError, err.Error())
return
}
if err := serveSocket(conn, room, hub); err != nil {
log.Printf("Websocket error; err=%v", err)
ctx.String(err.Status(), err.Error())
}
})
pipeline := router.Group("/pipeline")
pipeline.POST("", func(ctx *gin.Context) {
pipeline, err := validateJson[zjson.Pipeline](ctx.Request.Body)
if err != nil {
log.Printf("Invalid json request; err=%v", err)
ctx.String(err.Status(), err.Error())
return
}
res, err := createPipeline(ctx.Request.Context(), db, "org", pipeline)
if err != nil {
log.Printf("Failed to create pipeline; err=%v", err)
ctx.String(err.Status(), err.Error())
return
}
ctx.JSON(http.StatusCreated, newResponsePipeline(res))
})
pipeline.GET("/list", func(ctx *gin.Context) {
res, err := listAllPipelines(ctx.Request.Context(), db, "org")
if err != nil {
log.Printf("Failed to list pipelines; err=%v", err)
ctx.String(err.Status(), err.Error())
return
}
var response []ResponsePipeline
for _, pipeline := range res {
response = append(response, newResponsePipeline(pipeline))
}
ctx.JSON(http.StatusOK, response)
})
pipeline.DELETE("/:uuid/:hash", func(ctx *gin.Context) {
uuid := ctx.Param("uuid")
hash := ctx.Param("hash")
if err := softDeletePipeline(ctx.Request.Context(), db, "org", uuid, hash); err != nil {
log.Printf("Failed to delete pipeline; err=%v", err)
ctx.String(err.Status(), err.Error())
return
}
})
pipeline.PATCH("/:uuid/:hash/deploy", func(ctx *gin.Context) {
uuid := ctx.Param("uuid")
hash := ctx.Param("hash")
if err := deployPipeline(ctx.Request.Context(), db, "org", uuid, hash); err != nil {
log.Printf("Failed to deploy pipeline; err=%v", err)
ctx.String(err.Status(), err.Error())
return
}
})
pipeline.GET("/:uuid/list", func(ctx *gin.Context) {
uuid := ctx.Param("uuid")
res, err := listAllExecutions(ctx.Request.Context(), db, "org", uuid)
if err != nil {
log.Printf("Failed to list executions; err=%v", err)
ctx.String(err.Status(), err.Error())
return
}
var response []ResponseExecution
for _, execution := range res {
response = append(response, newResponseExecutionRow(execution))
}
ctx.JSON(http.StatusOK, response)
})
pipeline.GET("/:uuid/:hash/:index", func(ctx *gin.Context) {
uuid := ctx.Param("uuid")
hash := ctx.Param("hash")
index, err := strconv.Atoi(ctx.Param("index"))
if err != nil {
ctx.String(http.StatusBadRequest, "Invalid index")
return
}
res, httpErr := getExecution(ctx.Request.Context(), db, "org", uuid, hash, index)
if httpErr != nil {
log.Printf("Failed to delete execution; err=%v", err)
ctx.String(httpErr.Status(), httpErr.Error())
return
}
ctx.JSON(http.StatusOK, newResponseExecution(res, hash))
})
pipeline.GET("/:uuid/:hash/list", func(ctx *gin.Context) {
uuid := ctx.Param("uuid")
hash := ctx.Param("hash")
res, err := listExecutions(ctx.Request.Context(), db, "org", uuid, hash)
if err != nil {
log.Printf("Failed to list executions; err=%v", err)
ctx.String(err.Status(), err.Error())
return
}
var response []ResponseExecution
for _, execution := range res {
response = append(response, newResponseExecution(execution, hash))
}
ctx.JSON(http.StatusOK, response)
})
pipeline.POST("/:uuid/:hash/execute", func(ctx *gin.Context) {
paramUuid := ctx.Param("uuid")
hash := ctx.Param("hash")
res, err := getPipeline(ctx.Request.Context(), db, "org", paramUuid, hash)
if err != nil {
log.Printf("Failed to execute pipeline; err=%v", err)
ctx.String(err.Status(), err.Error())
return
}
var pipeline zjson.Pipeline
if err := json.Unmarshal([]byte(res.Json), &pipeline); err != nil {
ctx.String(http.StatusInternalServerError, err.Error())
return
}
executionId, uuidErr := uuid.NewV7()
if uuidErr != nil {
log.Printf("uuid generation failed; err=%v", uuidErr)
ctx.String(500, fmt.Sprintf("%v", uuidErr))
}
// TODO: client needs to handle file uploading to S3
// along with handling results files
sink := filepath.Join(pipeline.Sink, "history", executionId.String())
pipeline.Sink = sink
if config.IsLocal {
go localExecute(&pipeline, res.ID, executionId.String(), false, config, client, db, hub)
} else {
go cloudExecute(&pipeline, res.ID, executionId.String(), false, config, client, db, hub)
}
newRes := make(map[string]any)
newRes["pipeline"] = res
newRes["executionId"] = executionId.String()
ctx.JSON(http.StatusCreated, newRes)
})
pipeline.DELETE("/:uuid/:hash/:index", func(ctx *gin.Context) {
uuid := ctx.Param("uuid")
hash := ctx.Param("hash")
index, err := strconv.Atoi(ctx.Param("index"))
if err != nil {
ctx.String(http.StatusBadRequest, "Invalid index")
return
}
if err := softDeleteExecution(ctx.Request.Context(), db, "org", uuid, hash, index); err != nil {
log.Printf("Failed to delete execution; err=%v", err)
ctx.String(err.Status(), err.Error())
return
}
})
router.Run(fmt.Sprintf(":%d", config.ServerPort))
}