Miscellaneous Packages from Shared Into Proper Folders (#9638)

* slashutil

* builds

* interop

* viz

Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>

cmd/config.go

@@ -0,0 +1,84 @@
+package cmd
+
+import (
+	"github.com/prysmaticlabs/prysm/shared/params"
+	"github.com/urfave/cli/v2"
+)
+
+// Flags is a struct to represent which features the client will perform on runtime.
+type Flags struct {
+	// Configuration related flags.
+	MinimalConfig  bool // MinimalConfig as defined in the spec.
+	E2EConfig      bool // E2EConfig made specifically for testing, do not use except in E2E.
+	MaxRPCPageSize int  // MaxRPCPageSize is used for a cap of page sizes in RPC requests.
+}
+
+var sharedConfig *Flags
+
+// Get retrieves feature config.
+func Get() *Flags {
+	if sharedConfig == nil {
+		return &Flags{
+			MaxRPCPageSize: params.BeaconConfig().DefaultPageSize,
+		}
+	}
+	return sharedConfig
+}
+
+// Init sets the global config equal to the config that is passed in.
+func Init(c *Flags) {
+	sharedConfig = c
+}
+
+// InitWithReset sets the global config and returns function that is used to reset configuration.
+func InitWithReset(c *Flags) func() {
+	resetFunc := func() {
+		Init(nil)
+	}
+	Init(c)
+	return resetFunc
+}
+
+// ConfigureBeaconChain sets the global config based
+// on what flags are enabled for the beacon-chain client.
+func ConfigureBeaconChain(ctx *cli.Context) {
+	cfg := newConfig(ctx)
+	if ctx.IsSet(RPCMaxPageSizeFlag.Name) {
+		cfg.MaxRPCPageSize = ctx.Int(RPCMaxPageSizeFlag.Name)
+		log.Warnf("Starting beacon chain with max RPC page size of %d", cfg.MaxRPCPageSize)
+	}
+	Init(cfg)
+}
+
+// ConfigureSlasher sets the global config based
+// on what flags are enabled for the slasher client.
+func ConfigureSlasher(ctx *cli.Context) {
+	cfg := newConfig(ctx)
+	if ctx.IsSet(RPCMaxPageSizeFlag.Name) {
+		cfg.MaxRPCPageSize = ctx.Int(RPCMaxPageSizeFlag.Name)
+		log.Warnf("Starting slasher with max RPC page size of %d", cfg.MaxRPCPageSize)
+	}
+	Init(cfg)
+}
+
+// ConfigureValidator sets the global config based
+// on what flags are enabled for the validator client.
+func ConfigureValidator(ctx *cli.Context) {
+	cfg := newConfig(ctx)
+	Init(cfg)
+}
+
+func newConfig(ctx *cli.Context) *Flags {
+	cfg := Get()
+	if ctx.Bool(MinimalConfigFlag.Name) {
+		log.Warn("Using minimal config")
+		cfg.MinimalConfig = true
+		params.UseMinimalConfig()
+	}
+	if ctx.Bool(E2EConfigFlag.Name) {
+		log.Warn("Using end-to-end testing config")
+		cfg.MinimalConfig = true
+		params.UseE2EConfig()
+	}
+	return cfg
+}