aws-cdk
Version:
AWS CDK CLI, the command line tool for CDK apps
346 lines • 47.5 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.WorkGraph = void 0;
const work_graph_types_1 = require("./work-graph-types");
const api_1 = require("../../../../@aws-cdk/tmp-toolkit-helpers/src/api");
const private_1 = require("../../../../@aws-cdk/tmp-toolkit-helpers/src/api/io/private");
const util_1 = require("../../util");
class WorkGraph {
constructor(nodes, ioHelper) {
this.readyPool = [];
this.lazyDependencies = new Map();
this.nodes = { ...nodes };
this.ioHelper = ioHelper;
}
addNodes(...nodes) {
for (const node of nodes) {
if (this.nodes[node.id]) {
throw new api_1.ToolkitError(`Duplicate use of node id: ${node.id}`);
}
const ld = this.lazyDependencies.get(node.id);
if (ld) {
for (const x of ld) {
node.dependencies.add(x);
}
this.lazyDependencies.delete(node.id);
}
this.nodes[node.id] = node;
}
}
removeNode(nodeId) {
const id = typeof nodeId === 'string' ? nodeId : nodeId.id;
const removedNode = this.nodes[id];
this.lazyDependencies.delete(id);
delete this.nodes[id];
if (removedNode) {
for (const node of Object.values(this.nodes)) {
node.dependencies.delete(removedNode.id);
}
}
}
/**
* Return all nodes of a given type
*/
nodesOfType(type) {
return Object.values(this.nodes).filter(n => n.type === type);
}
/**
* Return all nodes that depend on a given node
*/
dependees(nodeId) {
const id = typeof nodeId === 'string' ? nodeId : nodeId.id;
return Object.values(this.nodes).filter(n => n.dependencies.has(id));
}
/**
* Add a dependency, that may come before or after the nodes involved
*/
addDependency(fromId, toId) {
const node = this.nodes[fromId];
if (node) {
node.dependencies.add(toId);
return;
}
let lazyDeps = this.lazyDependencies.get(fromId);
if (!lazyDeps) {
lazyDeps = [];
this.lazyDependencies.set(fromId, lazyDeps);
}
lazyDeps.push(toId);
}
tryGetNode(id) {
return this.nodes[id];
}
node(id) {
const ret = this.nodes[id];
if (!ret) {
throw new api_1.ToolkitError(`No node with id ${id} among ${Object.keys(this.nodes)}`);
}
return ret;
}
absorb(graph) {
this.addNodes(...Object.values(graph.nodes));
}
hasFailed() {
return Object.values(this.nodes).some((n) => n.deploymentState === work_graph_types_1.DeploymentState.FAILED);
}
doParallel(concurrency, actions) {
return this.forAllArtifacts(concurrency, async (x) => {
switch (x.type) {
case 'stack':
await actions.deployStack(x);
break;
case 'asset-build':
await actions.buildAsset(x);
break;
case 'asset-publish':
await actions.publishAsset(x);
break;
}
});
}
/**
* Return the set of unblocked nodes
*/
async ready() {
await this.updateReadyPool();
return this.readyPool;
}
forAllArtifacts(n, fn) {
const graph = this;
// If 'n' is a number, we limit all concurrency equally (effectively we will be using totalMax)
// If 'n' is a record, we limit each job independently (effectively we will be using max)
const max = typeof n === 'number' ?
{
'asset-build': n,
'asset-publish': n,
'stack': n,
} : n;
const totalMax = typeof n === 'number' ? n : sum(Object.values(n));
return new Promise((ok, fail) => {
let active = {
'asset-build': 0,
'asset-publish': 0,
'stack': 0,
};
function totalActive() {
return sum(Object.values(active));
}
start();
function start() {
graph.updateReadyPool().then(() => {
for (let i = 0; i < graph.readyPool.length;) {
const node = graph.readyPool[i];
if (active[node.type] < max[node.type] && totalActive() < totalMax) {
graph.readyPool.splice(i, 1);
startOne(node);
}
else {
i += 1;
}
}
if (totalActive() === 0) {
if (graph.done()) {
ok();
}
// wait for other active deploys to finish before failing
if (graph.hasFailed()) {
fail(graph.error);
}
}
}).catch((e) => {
fail(e);
});
}
function startOne(x) {
x.deploymentState = work_graph_types_1.DeploymentState.DEPLOYING;
active[x.type]++;
void fn(x)
.finally(() => {
active[x.type]--;
})
.then(() => {
graph.deployed(x);
start();
}).catch((err) => {
// By recording the failure immediately as the queued task exits, we prevent the next
// queued task from starting.
graph.failed(x, err);
start();
});
}
});
}
done() {
return Object.values(this.nodes).every((n) => work_graph_types_1.DeploymentState.COMPLETED === n.deploymentState);
}
deployed(node) {
node.deploymentState = work_graph_types_1.DeploymentState.COMPLETED;
}
failed(node, error) {
this.error = error;
node.deploymentState = work_graph_types_1.DeploymentState.FAILED;
this.skipRest();
this.readyPool.splice(0);
}
toString() {
return [
'digraph D {',
...Object.entries(this.nodes).flatMap(([id, node]) => renderNode(id, node)),
'}',
].join('\n');
function renderNode(id, node) {
const ret = [];
if (node.deploymentState === work_graph_types_1.DeploymentState.COMPLETED) {
ret.push(` ${gv(id, { style: 'filled', fillcolor: 'yellow', comment: node.note })};`);
}
else {
ret.push(` ${gv(id, { comment: node.note })};`);
}
for (const dep of node.dependencies) {
ret.push(` ${gv(id)} -> ${gv(dep)};`);
}
return ret;
}
}
/**
* Ensure all dependencies actually exist. This protects against scenarios such as the following:
* StackA depends on StackB, but StackB is not selected to deploy. The dependency is redundant
* and will be dropped.
* This assumes the manifest comes uncorrupted so we will not fail if a dependency is not found.
*/
removeUnavailableDependencies() {
for (const node of Object.values(this.nodes)) {
const removeDeps = Array.from(node.dependencies).filter((dep) => this.nodes[dep] === undefined);
removeDeps.forEach((d) => {
node.dependencies.delete(d);
});
}
}
/**
* Remove all asset publishing steps for assets that are already published, and then build
* that aren't used anymore.
*
* Do this in parallel, because there may be a lot of assets in an application (seen in practice: >100 assets)
*/
async removeUnnecessaryAssets(isUnnecessary) {
await this.ioHelper.notify(private_1.IO.DEFAULT_TOOLKIT_DEBUG.msg('Checking for previously published assets'));
const publishes = this.nodesOfType('asset-publish');
const classifiedNodes = await (0, util_1.parallelPromises)(8, publishes.map((assetNode) => async () => [assetNode, await isUnnecessary(assetNode)]));
const alreadyPublished = classifiedNodes.filter(([_, unnecessary]) => unnecessary).map(([assetNode, _]) => assetNode);
for (const assetNode of alreadyPublished) {
this.removeNode(assetNode);
}
await this.ioHelper.notify(private_1.IO.DEFAULT_TOOLKIT_DEBUG.msg(`${publishes.length} total assets, ${publishes.length - alreadyPublished.length} still need to be published`));
// Now also remove any asset build steps that don't have any dependencies on them anymore
const unusedBuilds = this.nodesOfType('asset-build').filter(build => this.dependees(build).length === 0);
for (const unusedBuild of unusedBuilds) {
this.removeNode(unusedBuild);
}
}
async updateReadyPool() {
const activeCount = Object.values(this.nodes).filter((x) => x.deploymentState === work_graph_types_1.DeploymentState.DEPLOYING).length;
const pendingCount = Object.values(this.nodes).filter((x) => x.deploymentState === work_graph_types_1.DeploymentState.PENDING).length;
const newlyReady = Object.values(this.nodes).filter((x) => x.deploymentState === work_graph_types_1.DeploymentState.PENDING &&
Array.from(x.dependencies).every((id) => this.node(id).deploymentState === work_graph_types_1.DeploymentState.COMPLETED));
// Add newly available nodes to the ready pool
for (const node of newlyReady) {
node.deploymentState = work_graph_types_1.DeploymentState.QUEUED;
this.readyPool.push(node);
}
// Remove nodes from the ready pool that have already started deploying
retainOnly(this.readyPool, (node) => node.deploymentState === work_graph_types_1.DeploymentState.QUEUED);
// Sort by reverse priority
this.readyPool.sort((a, b) => (b.priority ?? 0) - (a.priority ?? 0));
if (this.readyPool.length === 0 && activeCount === 0 && pendingCount > 0) {
const cycle = this.findCycle() ?? ['No cycle found!'];
await this.ioHelper.notify(private_1.IO.DEFAULT_TOOLKIT_TRACE.msg(`Cycle ${cycle.join(' -> ')} in graph ${this}`));
throw new api_1.ToolkitError(`Unable to make progress anymore, dependency cycle between remaining artifacts: ${cycle.join(' -> ')} (run with -vv for full graph)`);
}
}
skipRest() {
for (const node of Object.values(this.nodes)) {
if ([work_graph_types_1.DeploymentState.QUEUED, work_graph_types_1.DeploymentState.PENDING].includes(node.deploymentState)) {
node.deploymentState = work_graph_types_1.DeploymentState.SKIPPED;
}
}
}
/**
* Find cycles in a graph
*
* Not the fastest, but effective and should be rare
*/
findCycle() {
const seen = new Set();
const self = this;
for (const nodeId of Object.keys(this.nodes)) {
const cycle = recurse(nodeId, [nodeId]);
if (cycle) {
return cycle;
}
}
return undefined;
function recurse(nodeId, path) {
if (seen.has(nodeId)) {
return undefined;
}
try {
for (const dep of self.nodes[nodeId].dependencies ?? []) {
const index = path.indexOf(dep);
if (index > -1) {
return [...path.slice(index), dep];
}
const cycle = recurse(dep, [...path, dep]);
if (cycle) {
return cycle;
}
}
return undefined;
}
finally {
seen.add(nodeId);
}
}
}
/**
* Whether the `end` node is reachable from the `start` node, following the dependency arrows
*/
reachable(start, end) {
const seen = new Set();
const self = this;
return recurse(start);
function recurse(current) {
if (seen.has(current)) {
return false;
}
seen.add(current);
if (current === end) {
return true;
}
for (const dep of self.nodes[current].dependencies) {
if (recurse(dep)) {
return true;
}
}
return false;
}
}
}
exports.WorkGraph = WorkGraph;
function sum(xs) {
let ret = 0;
for (const x of xs) {
ret += x;
}
return ret;
}
function retainOnly(xs, pred) {
xs.splice(0, xs.length, ...xs.filter(pred));
}
function gv(id, attrs) {
const attrString = Object.entries(attrs ?? {}).flatMap(([k, v]) => v !== undefined ? [`${k}="${v}"`] : []).join(',');
return attrString ? `"${simplifyId(id)}" [${attrString}]` : `"${simplifyId(id)}"`;
}
function simplifyId(id) {
return id.replace(/([0-9a-f]{6})[0-9a-f]{6,}/g, '$1');
}
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type { WorkNode, StackNode, AssetBuildNode, AssetPublishNode } from './work-graph-types';\nimport { DeploymentState } from './work-graph-types';\nimport { ToolkitError } from '../../../../@aws-cdk/tmp-toolkit-helpers/src/api';\nimport { IO, type IoHelper } from '../../../../@aws-cdk/tmp-toolkit-helpers/src/api/io/private';\nimport { parallelPromises } from '../../util';\nexport type Concurrency = number | Record<WorkNode['type'], number>;\n\nexport class WorkGraph {\n  public readonly nodes: Record<string, WorkNode>;\n  private readonly readyPool: Array<WorkNode> = [];\n  private readonly lazyDependencies = new Map<string, string[]>();\n  private readonly ioHelper: IoHelper;\n\n  public error?: Error;\n\n  public constructor(nodes: Record<string, WorkNode>, ioHelper: IoHelper) {\n    this.nodes = { ...nodes };\n    this.ioHelper = ioHelper;\n  }\n\n  public addNodes(...nodes: WorkNode[]) {\n    for (const node of nodes) {\n      if (this.nodes[node.id]) {\n        throw new ToolkitError(`Duplicate use of node id: ${node.id}`);\n      }\n\n      const ld = this.lazyDependencies.get(node.id);\n      if (ld) {\n        for (const x of ld) {\n          node.dependencies.add(x);\n        }\n        this.lazyDependencies.delete(node.id);\n      }\n\n      this.nodes[node.id] = node;\n    }\n  }\n\n  public removeNode(nodeId: string | WorkNode) {\n    const id = typeof nodeId === 'string' ? nodeId : nodeId.id;\n    const removedNode = this.nodes[id];\n\n    this.lazyDependencies.delete(id);\n    delete this.nodes[id];\n\n    if (removedNode) {\n      for (const node of Object.values(this.nodes)) {\n        node.dependencies.delete(removedNode.id);\n      }\n    }\n  }\n\n  /**\n   * Return all nodes of a given type\n   */\n  public nodesOfType<T extends WorkNode['type']>(type: T): Extract<WorkNode, { type: T }>[] {\n    return Object.values(this.nodes).filter(n => n.type === type) as any;\n  }\n\n  /**\n   * Return all nodes that depend on a given node\n   */\n  public dependees(nodeId: string | WorkNode) {\n    const id = typeof nodeId === 'string' ? nodeId : nodeId.id;\n    return Object.values(this.nodes).filter(n => n.dependencies.has(id));\n  }\n\n  /**\n   * Add a dependency, that may come before or after the nodes involved\n   */\n  public addDependency(fromId: string, toId: string) {\n    const node = this.nodes[fromId];\n    if (node) {\n      node.dependencies.add(toId);\n      return;\n    }\n    let lazyDeps = this.lazyDependencies.get(fromId);\n    if (!lazyDeps) {\n      lazyDeps = [];\n      this.lazyDependencies.set(fromId, lazyDeps);\n    }\n    lazyDeps.push(toId);\n  }\n\n  public tryGetNode(id: string): WorkNode | undefined {\n    return this.nodes[id];\n  }\n\n  public node(id: string) {\n    const ret = this.nodes[id];\n    if (!ret) {\n      throw new ToolkitError(`No node with id ${id} among ${Object.keys(this.nodes)}`);\n    }\n    return ret;\n  }\n\n  public absorb(graph: WorkGraph) {\n    this.addNodes(...Object.values(graph.nodes));\n  }\n\n  private hasFailed(): boolean {\n    return Object.values(this.nodes).some((n) => n.deploymentState === DeploymentState.FAILED);\n  }\n\n  public doParallel(concurrency: Concurrency, actions: WorkGraphActions) {\n    return this.forAllArtifacts(concurrency, async (x: WorkNode) => {\n      switch (x.type) {\n        case 'stack':\n          await actions.deployStack(x);\n          break;\n        case 'asset-build':\n          await actions.buildAsset(x);\n          break;\n        case 'asset-publish':\n          await actions.publishAsset(x);\n          break;\n      }\n    });\n  }\n\n  /**\n   * Return the set of unblocked nodes\n   */\n  public async ready(): Promise<ReadonlyArray<WorkNode>> {\n    await this.updateReadyPool();\n    return this.readyPool;\n  }\n\n  private forAllArtifacts(n: Concurrency, fn: (x: WorkNode) => Promise<void>): Promise<void> {\n    const graph = this;\n\n    // If 'n' is a number, we limit all concurrency equally (effectively we will be using totalMax)\n    // If 'n' is a record, we limit each job independently (effectively we will be using max)\n    const max: Record<WorkNode['type'], number> = typeof n === 'number' ?\n      {\n        'asset-build': n,\n        'asset-publish': n,\n        'stack': n,\n      } : n;\n    const totalMax = typeof n === 'number' ? n : sum(Object.values(n));\n\n    return new Promise((ok, fail) => {\n      let active: Record<WorkNode['type'], number> = {\n        'asset-build': 0,\n        'asset-publish': 0,\n        'stack': 0,\n      };\n      function totalActive() {\n        return sum(Object.values(active));\n      }\n\n      start();\n\n      function start() {\n        graph.updateReadyPool().then(() => {\n          for (let i = 0; i < graph.readyPool.length; ) {\n            const node = graph.readyPool[i];\n\n            if (active[node.type] < max[node.type] && totalActive() < totalMax) {\n              graph.readyPool.splice(i, 1);\n              startOne(node);\n            } else {\n              i += 1;\n            }\n          }\n\n          if (totalActive() === 0) {\n            if (graph.done()) {\n              ok();\n            }\n            // wait for other active deploys to finish before failing\n            if (graph.hasFailed()) {\n              fail(graph.error);\n            }\n          }\n        }).catch((e) => {\n          fail(e);\n        });\n      }\n\n      function startOne(x: WorkNode) {\n        x.deploymentState = DeploymentState.DEPLOYING;\n        active[x.type]++;\n        void fn(x)\n          .finally(() => {\n            active[x.type]--;\n          })\n          .then(() => {\n            graph.deployed(x);\n            start();\n          }).catch((err) => {\n            // By recording the failure immediately as the queued task exits, we prevent the next\n            // queued task from starting.\n            graph.failed(x, err);\n            start();\n          });\n      }\n    });\n  }\n\n  private done(): boolean {\n    return Object.values(this.nodes).every((n) => DeploymentState.COMPLETED === n.deploymentState);\n  }\n\n  private deployed(node: WorkNode) {\n    node.deploymentState = DeploymentState.COMPLETED;\n  }\n\n  private failed(node: WorkNode, error?: Error) {\n    this.error = error;\n    node.deploymentState = DeploymentState.FAILED;\n    this.skipRest();\n    this.readyPool.splice(0);\n  }\n\n  public toString() {\n    return [\n      'digraph D {',\n      ...Object.entries(this.nodes).flatMap(([id, node]) => renderNode(id, node)),\n      '}',\n    ].join('\\n');\n\n    function renderNode(id: string, node: WorkNode): string[] {\n      const ret = [];\n      if (node.deploymentState === DeploymentState.COMPLETED) {\n        ret.push(`  ${gv(id, { style: 'filled', fillcolor: 'yellow', comment: node.note })};`);\n      } else {\n        ret.push(`  ${gv(id, { comment: node.note })};`);\n      }\n      for (const dep of node.dependencies) {\n        ret.push(`  ${gv(id)} -> ${gv(dep)};`);\n      }\n      return ret;\n    }\n  }\n\n  /**\n   * Ensure all dependencies actually exist. This protects against scenarios such as the following:\n   * StackA depends on StackB, but StackB is not selected to deploy. The dependency is redundant\n   * and will be dropped.\n   * This assumes the manifest comes uncorrupted so we will not fail if a dependency is not found.\n   */\n  public removeUnavailableDependencies() {\n    for (const node of Object.values(this.nodes)) {\n      const removeDeps = Array.from(node.dependencies).filter((dep) => this.nodes[dep] === undefined);\n\n      removeDeps.forEach((d) => {\n        node.dependencies.delete(d);\n      });\n    }\n  }\n\n  /**\n   * Remove all asset publishing steps for assets that are already published, and then build\n   * that aren't used anymore.\n   *\n   * Do this in parallel, because there may be a lot of assets in an application (seen in practice: >100 assets)\n   */\n  public async removeUnnecessaryAssets(isUnnecessary: (x: AssetPublishNode) => Promise<boolean>) {\n    await this.ioHelper.notify(IO.DEFAULT_TOOLKIT_DEBUG.msg('Checking for previously published assets'));\n\n    const publishes = this.nodesOfType('asset-publish');\n\n    const classifiedNodes = await parallelPromises(\n      8,\n      publishes.map((assetNode) => async() => [assetNode, await isUnnecessary(assetNode)] as const));\n\n    const alreadyPublished = classifiedNodes.filter(([_, unnecessary]) => unnecessary).map(([assetNode, _]) => assetNode);\n    for (const assetNode of alreadyPublished) {\n      this.removeNode(assetNode);\n    }\n\n    await this.ioHelper.notify(IO.DEFAULT_TOOLKIT_DEBUG.msg(`${publishes.length} total assets, ${publishes.length - alreadyPublished.length} still need to be published`));\n\n    // Now also remove any asset build steps that don't have any dependencies on them anymore\n    const unusedBuilds = this.nodesOfType('asset-build').filter(build => this.dependees(build).length === 0);\n    for (const unusedBuild of unusedBuilds) {\n      this.removeNode(unusedBuild);\n    }\n  }\n\n  private async updateReadyPool() {\n    const activeCount = Object.values(this.nodes).filter((x) => x.deploymentState === DeploymentState.DEPLOYING).length;\n    const pendingCount = Object.values(this.nodes).filter((x) => x.deploymentState === DeploymentState.PENDING).length;\n\n    const newlyReady = Object.values(this.nodes).filter((x) =>\n      x.deploymentState === DeploymentState.PENDING &&\n      Array.from(x.dependencies).every((id) => this.node(id).deploymentState === DeploymentState.COMPLETED));\n\n    // Add newly available nodes to the ready pool\n    for (const node of newlyReady) {\n      node.deploymentState = DeploymentState.QUEUED;\n      this.readyPool.push(node);\n    }\n\n    // Remove nodes from the ready pool that have already started deploying\n    retainOnly(this.readyPool, (node) => node.deploymentState === DeploymentState.QUEUED);\n\n    // Sort by reverse priority\n    this.readyPool.sort((a, b) => (b.priority ?? 0) - (a.priority ?? 0));\n\n    if (this.readyPool.length === 0 && activeCount === 0 && pendingCount > 0) {\n      const cycle = this.findCycle() ?? ['No cycle found!'];\n      await this.ioHelper.notify(IO.DEFAULT_TOOLKIT_TRACE.msg(`Cycle ${cycle.join(' -> ')} in graph ${this}`));\n      throw new ToolkitError(`Unable to make progress anymore, dependency cycle between remaining artifacts: ${cycle.join(' -> ')} (run with -vv for full graph)`);\n    }\n  }\n\n  private skipRest() {\n    for (const node of Object.values(this.nodes)) {\n      if ([DeploymentState.QUEUED, DeploymentState.PENDING].includes(node.deploymentState)) {\n        node.deploymentState = DeploymentState.SKIPPED;\n      }\n    }\n  }\n\n  /**\n   * Find cycles in a graph\n   *\n   * Not the fastest, but effective and should be rare\n   */\n  public findCycle(): string[] | undefined {\n    const seen = new Set<string>();\n    const self = this;\n    for (const nodeId of Object.keys(this.nodes)) {\n      const cycle = recurse(nodeId, [nodeId]);\n      if (cycle) {\n        return cycle;\n      }\n    }\n    return undefined;\n\n    function recurse(nodeId: string, path: string[]): string[] | undefined {\n      if (seen.has(nodeId)) {\n        return undefined;\n      }\n      try {\n        for (const dep of self.nodes[nodeId].dependencies ?? []) {\n          const index = path.indexOf(dep);\n          if (index > -1) {\n            return [...path.slice(index), dep];\n          }\n\n          const cycle = recurse(dep, [...path, dep]);\n          if (cycle) {\n            return cycle;\n          }\n        }\n\n        return undefined;\n      } finally {\n        seen.add(nodeId);\n      }\n    }\n  }\n\n  /**\n   * Whether the `end` node is reachable from the `start` node, following the dependency arrows\n   */\n  public reachable(start: string, end: string): boolean {\n    const seen = new Set<string>();\n    const self = this;\n    return recurse(start);\n\n    function recurse(current: string) {\n      if (seen.has(current)) {\n        return false;\n      }\n      seen.add(current);\n\n      if (current === end) {\n        return true;\n      }\n      for (const dep of self.nodes[current].dependencies) {\n        if (recurse(dep)) {\n          return true;\n        }\n      }\n      return false;\n    }\n  }\n}\n\nexport interface WorkGraphActions {\n  deployStack: (stackNode: StackNode) => Promise<void>;\n  buildAsset: (assetNode: AssetBuildNode) => Promise<void>;\n  publishAsset: (assetNode: AssetPublishNode) => Promise<void>;\n}\n\nfunction sum(xs: number[]) {\n  let ret = 0;\n  for (const x of xs) {\n    ret += x;\n  }\n  return ret;\n}\n\nfunction retainOnly<A>(xs: A[], pred: (x: A) => boolean) {\n  xs.splice(0, xs.length, ...xs.filter(pred));\n}\n\nfunction gv(id: string, attrs?: Record<string, string | undefined>) {\n  const attrString = Object.entries(attrs ?? {}).flatMap(([k, v]) => v !== undefined ? [`${k}=\"${v}\"`] : []).join(',');\n\n  return attrString ? `\"${simplifyId(id)}\" [${attrString}]` : `\"${simplifyId(id)}\"`;\n}\n\nfunction simplifyId(id: string) {\n  return id.replace(/([0-9a-f]{6})[0-9a-f]{6,}/g, '$1');\n}\n"]}