refactor(GraphQL): Rename logRequest name and its resolver. (#8388)

## Problem

In order to add GraphQL Query Log(#8305) we need to rename the current
DQL query log resolver and config.

## Solution

> Rename: logRequest => logDQLRequest 

Important change:

```diff
--- glog.Infof("Got a query: %+v", req.req)
+++ glog.Infof("Got a DQL query: %+v", req.req)
```

edgraph/server.go

@@ -1188,8 +1188,8 @@ func (s *Server) doQuery(ctx context.Context, req *Request) (resp *api.Response,
 		return nil, serverOverloadErr
 	}
 
-	if bool(glog.V(3)) || worker.LogRequestEnabled() {
-		glog.Infof("Got a query: %+v", req.req)
+	if bool(glog.V(3)) || worker.LogDQLRequestEnabled() {
+		glog.Infof("Got a DQL query: %+v", req.req)
 	}
 
 	isGraphQL, _ := ctx.Value(IsGraphql).(bool)

graphql/admin/admin.go

@@ -299,10 +299,10 @@ const (
 		cacheMb: Float
 
 		"""
-		True value of logRequest enables logging of all the requests coming to alphas.
-		False value of logRequest disables above.
+		True value of logDQLRequest enables logging of all the requests coming to alphas.
+		False value of logDQLRequest disables above.
 		"""
-		logRequest: Boolean
+		logDQLRequest: Boolean
 	}
 
 	type ConfigPayload {

graphql/admin/config.go

@@ -29,10 +29,10 @@ import (
 
 type configInput struct {
 	CacheMb *float64
-	// LogRequest is used to update WorkerOptions.LogRequest. true value of LogRequest enables
-	// logging of all requests coming to alphas. LogRequest type has been kept as *bool instead of
-	// bool to avoid updating WorkerOptions.LogRequest when it has default value of false.
-	LogRequest *bool
+	// LogDQLRequest is used to update WorkerOptions.LogDQLRequest. true value of LogDQLRequest enables
+	// logging of all requests coming to alphas. LogDQLRequest type has been kept as *bool instead of
+	// bool to avoid updating WorkerOptions.LogDQLRequest when it has default value of false.
+	LogDQLRequest *bool
 }
 
 func resolveUpdateConfig(ctx context.Context, m schema.Mutation) (*resolve.Resolved, bool) {
@@ -50,9 +50,9 @@ func resolveUpdateConfig(ctx context.Context, m schema.Mutation) (*resolve.Resol
 		}
 	}
 
-	// input.LogRequest will be nil, when it is not specified explicitly in config request.
-	if input.LogRequest != nil {
-		worker.UpdateLogRequest(*input.LogRequest)
+	// input.LogDQLRequest will be nil, when it is not specified explicitly in config request.
+	if input.LogDQLRequest != nil {
+		worker.UpdateLogDQLRequest(*input.LogDQLRequest)
 	}
 
 	return resolve.DataResult(

wiki/content/graphql/admin/index.md

@@ -251,10 +251,10 @@ Here are the important types, queries, and mutations from the `admin` schema.
 		cacheMb: Float
 
 		"""
-		True value of logRequest enables logging of all the requests coming to alphas.
-		False value of logRequest disables above.
+		True value of logDQLRequest enables logging of all the requests coming to alphas.
+		False value of logDQLRequest disables above.
 		"""
-		logRequest: Boolean
+		logDQLRequest: Boolean
 	}
 
 	type ConfigPayload {

worker/worker.go

@@ -172,17 +172,17 @@ func UpdateCacheMb(memoryMB int64) error {
 	return nil
 }
 
-// UpdateLogRequest updates value of x.WorkerConfig.LogRequest.
-func UpdateLogRequest(val bool) {
+// UpdateLogDQLRequest updates value of x.WorkerConfig.LogDQLRequest.
+func UpdateLogDQLRequest(val bool) {
 	if val {
-		atomic.StoreInt32(&x.WorkerConfig.LogRequest, 1)
+		atomic.StoreInt32(&x.WorkerConfig.LogDQLRequest, 1)
 		return
 	}
 
-	atomic.StoreInt32(&x.WorkerConfig.LogRequest, 0)
+	atomic.StoreInt32(&x.WorkerConfig.LogDQLRequest, 0)
 }
 
-// LogRequestEnabled returns true if logging of requests is enabled otherwise false.
-func LogRequestEnabled() bool {
-	return atomic.LoadInt32(&x.WorkerConfig.LogRequest) > 0
+// LogDQLRequestEnabled returns true if logging of requests is enabled otherwise false.
+func LogDQLRequestEnabled() bool {
+	return atomic.LoadInt32(&x.WorkerConfig.LogDQLRequest) > 0
 }

x/config.go

@@ -130,11 +130,11 @@ type WorkerOptions struct {
 	Security *z.SuperFlag
 	// EncryptionKey is the key used for encryption at rest, backups, exports. Enterprise only feature.
 	EncryptionKey SensitiveByteSlice
-	// LogRequest indicates whether alpha should log all query/mutation requests coming to it.
-	// Ideally LogRequest should be a bool value. But we are reading it using atomics across
-	// queries hence it has been kept as int32. LogRequest value 1 enables logging of requests
+	// LogDQLRequest indicates whether alpha should log all query/mutation requests coming to it.
+	// Ideally LogDQLRequest should be a bool value. But we are reading it using atomics across
+	// queries hence it has been kept as int32. LogDQLRequest value 1 enables logging of requests
 	// coming to alphas and 0 disables it.
-	LogRequest int32
+	LogDQLRequest int32
 	// If true, we should call msync or fsync after every write to survive hard reboots.
 	HardSync bool
 	// Audit contains the audit flags that enables the audit.