aws-cdk
Version:
CDK Toolkit, the command line tool for CDK apps
162 lines • 22.7 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.RequireApproval = void 0;
exports.printStackDiff = printStackDiff;
exports.printSecurityDiff = printSecurityDiff;
const util_1 = require("util");
const cxschema = require("@aws-cdk/cloud-assembly-schema");
const cloudformation_diff_1 = require("@aws-cdk/cloudformation-diff");
const chalk = require("chalk");
const logging_1 = require("./logging");
const error_1 = require("./toolkit/error");
/**
* Pretty-prints the differences between two template states to the console.
*
* @param oldTemplate the old/current state of the stack.
* @param newTemplate the new/target state of the stack.
* @param strict do not filter out AWS::CDK::Metadata or Rules
* @param context lines of context to use in arbitrary JSON diff
* @param quiet silences \'There were no differences\' messages
*
* @returns the number of stacks in this stack tree that have differences, including the top-level root stack
*/
function printStackDiff(oldTemplate, newTemplate, strict, context, quiet, stackName, changeSet, isImport, stream = process.stderr, nestedStackTemplates) {
let diff = (0, cloudformation_diff_1.fullDiff)(oldTemplate, newTemplate.template, changeSet, isImport);
// must output the stack name if there are differences, even if quiet
if (stackName && (!quiet || !diff.isEmpty)) {
stream.write((0, util_1.format)('Stack %s\n', chalk.bold(stackName)));
}
if (!quiet && isImport) {
stream.write('Parameters and rules created during migration do not affect resource configuration.\n');
}
// detect and filter out mangled characters from the diff
let filteredChangesCount = 0;
if (diff.differenceCount && !strict) {
const mangledNewTemplate = JSON.parse((0, cloudformation_diff_1.mangleLikeCloudFormation)(JSON.stringify(newTemplate.template)));
const mangledDiff = (0, cloudformation_diff_1.fullDiff)(oldTemplate, mangledNewTemplate, changeSet);
filteredChangesCount = Math.max(0, diff.differenceCount - mangledDiff.differenceCount);
if (filteredChangesCount > 0) {
diff = mangledDiff;
}
}
// filter out 'AWS::CDK::Metadata' resources from the template
// filter out 'CheckBootstrapVersion' rules from the template
if (!strict) {
obscureDiff(diff);
}
let stackDiffCount = 0;
if (!diff.isEmpty) {
stackDiffCount++;
(0, cloudformation_diff_1.formatDifferences)(stream, diff, {
...logicalIdMapFromTemplate(oldTemplate),
...buildLogicalToPathMap(newTemplate),
}, context);
}
else if (!quiet) {
(0, logging_1.info)(chalk.green('There were no differences'));
}
if (filteredChangesCount > 0) {
(0, logging_1.info)(chalk.yellow(`Omitted ${filteredChangesCount} changes because they are likely mangled non-ASCII characters. Use --strict to print them.`));
}
for (const nestedStackLogicalId of Object.keys(nestedStackTemplates ?? {})) {
if (!nestedStackTemplates) {
break;
}
const nestedStack = nestedStackTemplates[nestedStackLogicalId];
newTemplate._template = nestedStack.generatedTemplate;
stackDiffCount += printStackDiff(nestedStack.deployedTemplate, newTemplate, strict, context, quiet, nestedStack.physicalName ?? nestedStackLogicalId, undefined, isImport, stream, nestedStack.nestedStackTemplates);
}
return stackDiffCount;
}
var RequireApproval;
(function (RequireApproval) {
RequireApproval["Never"] = "never";
RequireApproval["AnyChange"] = "any-change";
RequireApproval["Broadening"] = "broadening";
})(RequireApproval || (exports.RequireApproval = RequireApproval = {}));
/**
* Print the security changes of this diff, if the change is impactful enough according to the approval level
*
* Returns true if the changes are prompt-worthy, false otherwise.
*/
function printSecurityDiff(oldTemplate, newTemplate, requireApproval, _quiet, stackName, changeSet, stream = process.stderr) {
const diff = (0, cloudformation_diff_1.fullDiff)(oldTemplate, newTemplate.template, changeSet);
if (diffRequiresApproval(diff, requireApproval)) {
stream.write((0, util_1.format)('Stack %s\n', chalk.bold(stackName)));
// eslint-disable-next-line max-len
(0, logging_1.warning)(`This deployment will make potentially sensitive changes according to your current security approval level (--require-approval ${requireApproval}).`);
(0, logging_1.warning)('Please confirm you intend to make the following modifications:\n');
(0, cloudformation_diff_1.formatSecurityChanges)(process.stdout, diff, buildLogicalToPathMap(newTemplate));
return true;
}
return false;
}
/**
* Return whether the diff has security-impacting changes that need confirmation
*
* TODO: Filter the security impact determination based off of an enum that allows
* us to pick minimum "severities" to alert on.
*/
function diffRequiresApproval(diff, requireApproval) {
switch (requireApproval) {
case RequireApproval.Never: return false;
case RequireApproval.AnyChange: return diff.permissionsAnyChanges;
case RequireApproval.Broadening: return diff.permissionsBroadened;
default: throw new error_1.ToolkitError(`Unrecognized approval level: ${requireApproval}`);
}
}
function buildLogicalToPathMap(stack) {
const map = {};
for (const md of stack.findMetadataByType(cxschema.ArtifactMetadataEntryType.LOGICAL_ID)) {
map[md.data] = md.path;
}
return map;
}
function logicalIdMapFromTemplate(template) {
const ret = {};
for (const [logicalId, resource] of Object.entries(template.Resources ?? {})) {
const path = resource?.Metadata?.['aws:cdk:path'];
if (path) {
ret[logicalId] = path;
}
}
return ret;
}
/**
* Remove any template elements that we don't want to show users.
* This is currently:
* - AWS::CDK::Metadata resource
* - CheckBootstrapVersion Rule
*/
function obscureDiff(diff) {
if (diff.unknown) {
// see https://github.com/aws/aws-cdk/issues/17942
diff.unknown = diff.unknown.filter(change => {
if (!change) {
return true;
}
if (change.newValue?.CheckBootstrapVersion) {
return false;
}
if (change.oldValue?.CheckBootstrapVersion) {
return false;
}
return true;
});
}
if (diff.resources) {
diff.resources = diff.resources.filter(change => {
if (!change) {
return true;
}
if (change.newResourceType === 'AWS::CDK::Metadata') {
return false;
}
if (change.oldResourceType === 'AWS::CDK::Metadata') {
return false;
}
return true;
});
}
}
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{ format } from 'util';\nimport * as cxschema from '@aws-cdk/cloud-assembly-schema';\nimport {\n  type DescribeChangeSetOutput,\n  type FormatStream,\n  type TemplateDiff,\n  formatDifferences,\n  formatSecurityChanges,\n  fullDiff,\n  mangleLikeCloudFormation,\n} from '@aws-cdk/cloudformation-diff';\nimport * as cxapi from '@aws-cdk/cx-api';\nimport * as chalk from 'chalk';\nimport { type NestedStackTemplates } from './api/deployments';\nimport { info, warning } from './logging';\nimport { ToolkitError } from './toolkit/error';\n\n/**\n * Pretty-prints the differences between two template states to the console.\n *\n * @param oldTemplate the old/current state of the stack.\n * @param newTemplate the new/target state of the stack.\n * @param strict      do not filter out AWS::CDK::Metadata or Rules\n * @param context     lines of context to use in arbitrary JSON diff\n * @param quiet       silences \\'There were no differences\\' messages\n *\n * @returns the number of stacks in this stack tree that have differences, including the top-level root stack\n */\nexport function printStackDiff(\n  oldTemplate: any,\n  newTemplate: cxapi.CloudFormationStackArtifact,\n  strict: boolean,\n  context: number,\n  quiet: boolean,\n  stackName?: string,\n  changeSet?: DescribeChangeSetOutput,\n  isImport?: boolean,\n  stream: FormatStream = process.stderr,\n  nestedStackTemplates?: { [nestedStackLogicalId: string]: NestedStackTemplates }): number {\n  let diff = fullDiff(oldTemplate, newTemplate.template, changeSet, isImport);\n\n  // must output the stack name if there are differences, even if quiet\n  if (stackName && (!quiet || !diff.isEmpty)) {\n    stream.write(format('Stack %s\\n', chalk.bold(stackName)));\n  }\n\n  if (!quiet && isImport) {\n    stream.write('Parameters and rules created during migration do not affect resource configuration.\\n');\n  }\n\n  // detect and filter out mangled characters from the diff\n  let filteredChangesCount = 0;\n  if (diff.differenceCount && !strict) {\n    const mangledNewTemplate = JSON.parse(mangleLikeCloudFormation(JSON.stringify(newTemplate.template)));\n    const mangledDiff = fullDiff(oldTemplate, mangledNewTemplate, changeSet);\n    filteredChangesCount = Math.max(0, diff.differenceCount - mangledDiff.differenceCount);\n    if (filteredChangesCount > 0) {\n      diff = mangledDiff;\n    }\n  }\n\n  // filter out 'AWS::CDK::Metadata' resources from the template\n  // filter out 'CheckBootstrapVersion' rules from the template\n  if (!strict) {\n    obscureDiff(diff);\n  }\n\n  let stackDiffCount = 0;\n  if (!diff.isEmpty) {\n    stackDiffCount++;\n    formatDifferences(stream, diff, {\n      ...logicalIdMapFromTemplate(oldTemplate),\n      ...buildLogicalToPathMap(newTemplate),\n    }, context);\n  } else if (!quiet) {\n    info(chalk.green('There were no differences'));\n  }\n  if (filteredChangesCount > 0) {\n    info(chalk.yellow(`Omitted ${filteredChangesCount} changes because they are likely mangled non-ASCII characters. Use --strict to print them.`));\n  }\n\n  for (const nestedStackLogicalId of Object.keys(nestedStackTemplates ?? {})) {\n    if (!nestedStackTemplates) {\n      break;\n    }\n    const nestedStack = nestedStackTemplates[nestedStackLogicalId];\n\n    (newTemplate as any)._template = nestedStack.generatedTemplate;\n    stackDiffCount += printStackDiff(\n      nestedStack.deployedTemplate,\n      newTemplate,\n      strict,\n      context,\n      quiet,\n      nestedStack.physicalName ?? nestedStackLogicalId,\n      undefined,\n      isImport,\n      stream,\n      nestedStack.nestedStackTemplates,\n    );\n  }\n\n  return stackDiffCount;\n}\n\nexport enum RequireApproval {\n  Never = 'never',\n\n  AnyChange = 'any-change',\n\n  Broadening = 'broadening',\n}\n\n/**\n * Print the security changes of this diff, if the change is impactful enough according to the approval level\n *\n * Returns true if the changes are prompt-worthy, false otherwise.\n */\nexport function printSecurityDiff(\n  oldTemplate: any,\n  newTemplate: cxapi.CloudFormationStackArtifact,\n  requireApproval: RequireApproval,\n  _quiet?: boolean,\n  stackName?: string,\n  changeSet?: DescribeChangeSetOutput,\n  stream: FormatStream = process.stderr,\n): boolean {\n  const diff = fullDiff(oldTemplate, newTemplate.template, changeSet);\n\n  if (diffRequiresApproval(diff, requireApproval)) {\n    stream.write(format('Stack %s\\n', chalk.bold(stackName)));\n\n    // eslint-disable-next-line max-len\n    warning(`This deployment will make potentially sensitive changes according to your current security approval level (--require-approval ${requireApproval}).`);\n    warning('Please confirm you intend to make the following modifications:\\n');\n\n    formatSecurityChanges(process.stdout, diff, buildLogicalToPathMap(newTemplate));\n    return true;\n  }\n  return false;\n}\n\n/**\n * Return whether the diff has security-impacting changes that need confirmation\n *\n * TODO: Filter the security impact determination based off of an enum that allows\n * us to pick minimum \"severities\" to alert on.\n */\nfunction diffRequiresApproval(diff: TemplateDiff, requireApproval: RequireApproval) {\n  switch (requireApproval) {\n    case RequireApproval.Never: return false;\n    case RequireApproval.AnyChange: return diff.permissionsAnyChanges;\n    case RequireApproval.Broadening: return diff.permissionsBroadened;\n    default: throw new ToolkitError(`Unrecognized approval level: ${requireApproval}`);\n  }\n}\n\nfunction buildLogicalToPathMap(stack: cxapi.CloudFormationStackArtifact) {\n  const map: { [id: string]: string } = {};\n  for (const md of stack.findMetadataByType(cxschema.ArtifactMetadataEntryType.LOGICAL_ID)) {\n    map[md.data as string] = md.path;\n  }\n  return map;\n}\n\nfunction logicalIdMapFromTemplate(template: any) {\n  const ret: Record<string, string> = {};\n\n  for (const [logicalId, resource] of Object.entries(template.Resources ?? {})) {\n    const path = (resource as any)?.Metadata?.['aws:cdk:path'];\n    if (path) {\n      ret[logicalId] = path;\n    }\n  }\n  return ret;\n}\n\n/**\n * Remove any template elements that we don't want to show users.\n * This is currently:\n * - AWS::CDK::Metadata resource\n * - CheckBootstrapVersion Rule\n */\nfunction obscureDiff(diff: TemplateDiff) {\n  if (diff.unknown) {\n    // see https://github.com/aws/aws-cdk/issues/17942\n    diff.unknown = diff.unknown.filter(change => {\n      if (!change) { return true; }\n      if (change.newValue?.CheckBootstrapVersion) { return false; }\n      if (change.oldValue?.CheckBootstrapVersion) { return false; }\n      return true;\n    });\n  }\n\n  if (diff.resources) {\n    diff.resources = diff.resources.filter(change => {\n      if (!change) { return true; }\n      if (change.newResourceType === 'AWS::CDK::Metadata') { return false; }\n      if (change.oldResourceType === 'AWS::CDK::Metadata') { return false; }\n      return true;\n    });\n  }\n}\n"]}