Reduce redundancy in the RequestGraph's Request, Env, and Option nodes

packages/core/core/src/RequestTracker.js

@@ -84,45 +84,60 @@ type SerializedRequestGraph = {|
 |};
 
 type FileNode = {|id: ContentKey, +type: 'file'|};
+
 type GlobNode = {|id: ContentKey, +type: 'glob', value: InternalGlob|};
+
 type FileNameNode = {|
   id: ContentKey,
   +type: 'file_name',
-  value: string,
 |};
+
 type EnvNode = {|
   id: ContentKey,
   +type: 'env',
-  value: {|key: string, value: string | void|},
+  value: string | void,
 |};
 
 type OptionNode = {|
   id: ContentKey,
   +type: 'option',
-  value: {|key: string, hash: string|},
+  hash: string,
 |};
 
 type Request<TInput, TResult> = {|
   id: string,
-  +type: string,
+  +type: RequestType,
   input: TInput,
   run: ({|input: TInput, ...StaticRunOpts<TResult>|}) => Async<TResult>,
 |};
 
-type StoredRequest = {|
-  id: string,
-  +type: string,
-  result?: mixed,
-  resultCacheKey?: ?string,
-|};
-
 type InvalidateReason = number;
 type RequestNode = {|
   id: ContentKey,
   +type: 'request',
-  value: StoredRequest,
+  +requestType: RequestType,
   invalidateReason: InvalidateReason,
+  result?: mixed,
+  resultCacheKey?: ?string,
+  hash?: string,
 |};
+
+type RequestType =
+  | 'parcel_build_request'
+  | 'bundle_graph_request'
+  | 'asset_graph_request'
+  | 'entry_request'
+  | 'target_request'
+  | 'parcel_config_request'
+  | 'path_request'
+  | 'dev_dep_request'
+  | 'asset_request'
+  | 'config_request'
+  | 'write_bundles_request'
+  | 'package_request'
+  | 'write_bundle_request'
+  | 'validation_request';
+
 type RequestGraphNode =
   | RequestNode
   | FileNode
@@ -143,8 +158,8 @@ export type RunAPI<TResult> = {|
   storeResult(result: TResult, cacheKey?: string): void,
   getRequestResult<T>(contentKey: ContentKey): Async<?T>,
   getPreviousResult<T>(ifMatch?: string): Async<?T>,
-  getSubRequests(): Array<StoredRequest>,
-  getInvalidSubRequests(): Array<StoredRequest>,
+  getSubRequests(): Array<RequestNode>,
+  getInvalidSubRequests(): Array<RequestNode>,
   canSkipSubrequest(ContentKey): boolean,
   runRequest: <TInput, TResult>(
     subRequest: Request<TInput, TResult>,
@@ -177,34 +192,33 @@ const nodeFromGlob = (glob: InternalGlob): RequestGraphNode => ({
 const nodeFromFileName = (fileName: string): RequestGraphNode => ({
   id: 'file_name:' + fileName,
   type: 'file_name',
-  value: fileName,
 });
 
-const nodeFromRequest = (request: StoredRequest): RequestGraphNode => ({
+const nodeFromRequest = (request: RequestNode): RequestGraphNode => ({
   id: request.id,
   type: 'request',
-  value: request,
+  requestType: request.requestType,
   invalidateReason: INITIAL_BUILD,
 });
 
 const nodeFromEnv = (env: string, value: string | void): RequestGraphNode => ({
   id: 'env:' + env,
   type: 'env',
-  value: {
-    key: env,
-    value,
-  },
+  value,
 });
 
 const nodeFromOption = (option: string, value: mixed): RequestGraphNode => ({
   id: 'option:' + option,
   type: 'option',
-  value: {
-    key: option,
-    hash: hashFromOption(value),
-  },
+  hash: hashFromOption(value),
 });
 
+const keyFromEnvContentKey = (contentKey: ContentKey): string =>
+  contentKey.slice('env:'.length);
+
+const keyFromOptionContentKey = (contentKey: ContentKey): string =>
+  contentKey.slice('option:'.length);
+
 export class RequestGraph extends ContentGraph<
   RequestGraphNode,
   RequestGraphEdgeType,
@@ -344,7 +358,7 @@ export class RequestGraph extends ContentGraph<
     for (let nodeId of this.envNodeIds) {
       let node = nullthrows(this.getNode(nodeId));
       invariant(node.type === 'env');
-      if (env[node.value.key] !== node.value.value) {
+      if (env[keyFromEnvContentKey(node.id)] !== node.value) {
         let parentNodes = this.getNodeIdsConnectedTo(
           nodeId,
           requestGraphEdgeTypes.invalidated_by_update,
@@ -360,7 +374,9 @@ export class RequestGraph extends ContentGraph<
     for (let nodeId of this.optionNodeIds) {
       let node = nullthrows(this.getNode(nodeId));
       invariant(node.type === 'option');
-      if (hashFromOption(options[node.value.key]) !== node.value.hash) {
+      if (
+        hashFromOption(options[keyFromOptionContentKey(node.id)]) !== node.hash
+      ) {
         let parentNodes = this.getNodeIdsConnectedTo(
           nodeId,
           requestGraphEdgeTypes.invalidated_by_update,
@@ -609,15 +625,18 @@ export class RequestGraph extends ContentGraph<
           case 'file':
             return {type: 'file', filePath: toProjectPathUnsafe(node.id)};
           case 'env':
-            return {type: 'env', key: node.value.key};
+            return {type: 'env', key: keyFromEnvContentKey(node.id)};
           case 'option':
-            return {type: 'option', key: node.value.key};
+            return {
+              type: 'option',
+              key: keyFromOptionContentKey(node.id),
+            };
         }
       })
       .filter(Boolean);
   }
 
-  getSubRequests(requestNodeId: NodeId): Array<StoredRequest> {
+  getSubRequests(requestNodeId: NodeId): Array<RequestNode> {
     if (!this.hasNode(requestNodeId)) {
       return [];
     }
@@ -630,11 +649,11 @@ export class RequestGraph extends ContentGraph<
     return subRequests.map(nodeId => {
       let node = nullthrows(this.getNode(nodeId));
       invariant(node.type === 'request');
-      return node.value;
+      return node;
     });
   }
 
-  getInvalidSubRequests(requestNodeId: NodeId): Array<StoredRequest> {
+  getInvalidSubRequests(requestNodeId: NodeId): Array<RequestNode> {
     if (!this.hasNode(requestNodeId)) {
       return [];
     }
@@ -649,7 +668,7 @@ export class RequestGraph extends ContentGraph<
       .map(nodeId => {
         let node = nullthrows(this.getNode(nodeId));
         invariant(node.type === 'request');
-        return node.value;
+        return node;
       });
   }
 
@@ -843,7 +862,7 @@ export default class RequestTracker {
     this.signal = signal;
   }
 
-  startRequest(request: StoredRequest): {|
+  startRequest(request: RequestNode): {|
     requestNodeId: NodeId,
     deferred: Deferred<boolean>,
   |} {
@@ -871,8 +890,8 @@ export default class RequestTracker {
   storeResult(nodeId: NodeId, result: mixed, cacheKey: ?string) {
     let node = this.graph.getNode(nodeId);
     if (node && node.type === 'request') {
-      node.value.result = result;
-      node.value.resultCacheKey = cacheKey;
+      node.result = result;
+      node.resultCacheKey = cacheKey;
     }
   }
 
@@ -891,21 +910,21 @@ export default class RequestTracker {
     let node = nullthrows(this.graph.getNodeByContentKey(contentKey));
     invariant(node.type === 'request');
 
-    if (ifMatch != null && node.value.resultCacheKey !== ifMatch) {
+    if (ifMatch != null && node.resultCacheKey !== ifMatch) {
       return null;
     }
 
-    if (node.value.result != undefined) {
+    if (node.result != undefined) {
       // $FlowFixMe
-      let result: T = (node.value.result: any);
+      let result: T = (node.result: any);
       return result;
-    } else if (node.value.resultCacheKey != null && ifMatch == null) {
-      let key = node.value.resultCacheKey;
+    } else if (node.resultCacheKey != null && ifMatch == null) {
+      let key = node.resultCacheKey;
       invariant(this.options.cache.hasLargeBlob(key));
       let cachedResult: T = deserialize(
         await this.options.cache.getLargeBlob(key),
       );
-      node.value.result = cachedResult;
+      node.result = cachedResult;
       return cachedResult;
     }
   }
@@ -940,12 +959,12 @@ export default class RequestTracker {
     return this.graph.invalidNodeIds.size > 0;
   }
 
-  getInvalidRequests(): Array<StoredRequest> {
+  getInvalidRequests(): Array<RequestNode> {
     let invalidRequests = [];
     for (let id of this.graph.invalidNodeIds) {
       let node = nullthrows(this.graph.getNode(id));
       invariant(node.type === 'request');
-      invalidRequests.push(node.value);
+      invalidRequests.push(node);
     }
     return invalidRequests;
   }
@@ -990,7 +1009,9 @@ export default class RequestTracker {
       requestId != null ? this.graph.getInvalidations(requestId) : [];
     let {requestNodeId, deferred} = this.startRequest({
       id: request.id,
-      type: request.type,
+      type: 'request',
+      requestType: request.type,
+      invalidateReason: INITIAL_BUILD,
     });
 
     let {api, subRequestContentKeys} = this.createAPI(
@@ -1000,7 +1021,6 @@ export default class RequestTracker {
 
     try {
       let node = this.graph.getRequestNode(requestNodeId);
-
       let result = await request.run({
         input: request.input,
         api,
@@ -1094,15 +1114,15 @@ export default class RequestTracker {
         continue;
       }
 
-      let resultCacheKey = node.value.resultCacheKey;
-      if (resultCacheKey != null && node.value.result != null) {
+      let resultCacheKey = node.resultCacheKey;
+      if (resultCacheKey != null && node.result != null) {
         promises.push(
           this.options.cache.setLargeBlob(
             resultCacheKey,
-            serialize(node.value.result),
+            serialize(node.result),
           ),
         );
-        delete node.value.result;
+        delete node.result;
       }
     }
 

packages/core/core/src/dumpGraphToGraphViz.js

@@ -164,7 +164,7 @@ export default async function dumpGraphToGraphViz(
       } else if (node.type === 'asset_group') {
         if (node.deferred) label += '(deferred)';
       } else if (node.type === 'file') {
-        label += path.basename(node.value.filePath);
+        label += path.basename(node.id);
       } else if (node.type === 'transformer_request') {
         label +=
           path.basename(node.value.filePath) +
@@ -178,7 +178,7 @@ export default async function dumpGraphToGraphViz(
         if (parts.length) label += ' (' + parts.join(', ') + ')';
         if (node.value.env) label += ` (${getEnvDescription(node.value.env)})`;
       } else if (node.type === 'request') {
-        label = node.value.type + ':' + node.id;
+        label = node.requestType + ':' + node.id;
       }
     }
     n.set('label', label);

packages/core/core/src/requests/AssetGraphRequest.js

@@ -161,8 +161,9 @@ export class AssetGraphBuilder {
     );
 
     this.isSingleChangeRebuild =
-      api.getInvalidSubRequests().filter(req => req.type === 'asset_request')
-        .length === 1;
+      api
+        .getInvalidSubRequests()
+        .filter(req => req.requestType === 'asset_request').length === 1;
     this.queue = new PromiseQueue();
 
     assetGraph.onNodeRemoved = nodeId => {
@@ -482,6 +483,7 @@ export class AssetGraphBuilder {
       optionsRef: this.optionsRef,
       isSingleChangeRebuild: this.isSingleChangeRebuild,
     });
+
     let assets = await this.api.runRequest<AssetRequestInput, Array<Asset>>(
       request,
       {force: true},

packages/core/core/src/requests/AssetRequest.js

@@ -81,7 +81,7 @@ async function run({input, api, farm, invalidateReason, options}) {
     await Promise.all(
       api
         .getSubRequests()
-        .filter(req => req.type === 'dev_dep_request')
+        .filter(req => req.requestType === 'dev_dep_request')
         .map(async req => [
           req.id,
           nullthrows(await api.getRequestResult<DevDepRequest>(req.id)),

packages/core/core/src/requests/DevDepRequest.js

@@ -108,7 +108,7 @@ export async function getDevDepRequests<TResult>(
     await Promise.all(
       api
         .getSubRequests()
-        .filter(req => req.type === 'dev_dep_request')
+        .filter(req => req.requestType === 'dev_dep_request')
         .map(async req => [
           req.id,
           nullthrows(await api.getRequestResult<DevDepRequest>(req.id)),

packages/core/core/src/requests/ParcelConfigRequest.js

@@ -52,7 +52,7 @@ type RunOpts<TResult> = {|
 
 export type ParcelConfigRequest = {|
   id: string,
-  type: string,
+  type: 'parcel_config_request',
   input: null,
   run: (RunOpts<ConfigAndCachePath>) => Async<ConfigAndCachePath>,
 |};