aws-cdk/lib/api/hotswap/common.js

CDK Toolkit, the command line tool for CDK apps

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.reportNonHotswappableResource = exports.reportNonHotswappableChange = exports.classifyChanges = exports.ClassifiedChanges = exports.lowerCaseFirstCharacter = exports.transformObjectKeys = exports.HotswappableChangeCandidate = exports.HotswapMode = exports.ICON = void 0;
exports.ICON = '✨';
var HotswapMode;
(function (HotswapMode) {
    /**
     * Will fall back to CloudFormation when a non-hotswappable change is detected
     */
    HotswapMode["FALL_BACK"] = "fall-back";
    /**
     * Will not fall back to CloudFormation when a non-hotswappable change is detected
     */
    HotswapMode["HOTSWAP_ONLY"] = "hotswap-only";
    /**
     * Will not attempt to hotswap anything and instead go straight to CloudFormation
     */
    HotswapMode["FULL_DEPLOYMENT"] = "full-deployment";
})(HotswapMode || (exports.HotswapMode = HotswapMode = {}));
/**
 * Represents a change that can be hotswapped.
 */
class HotswappableChangeCandidate {
    constructor(logicalId, oldValue, newValue, propertyUpdates) {
        this.logicalId = logicalId;
        this.oldValue = oldValue;
        this.newValue = newValue;
        this.propertyUpdates = propertyUpdates;
    }
}
exports.HotswappableChangeCandidate = HotswappableChangeCandidate;
/**
 * This function transforms all keys (recursively) in the provided `val` object.
 *
 * @param val The object whose keys need to be transformed.
 * @param transform The function that will be applied to each key.
 * @param exclude The keys that will not be transformed and copied to output directly
 * @returns A new object with the same values as `val`, but with all keys transformed according to `transform`.
 */
function transformObjectKeys(val, transform, exclude = {}) {
    if (val == null || typeof val !== 'object') {
        return val;
    }
    if (Array.isArray(val)) {
        // For arrays we just pass parent's exclude object directly
        // since it makes no sense to specify different exclude options for each array element
        return val.map((input) => transformObjectKeys(input, transform, exclude));
    }
    const ret = {};
    for (const [k, v] of Object.entries(val)) {
        const childExclude = exclude[k];
        if (childExclude === true) {
            // we don't transform this object if the key is specified in exclude
            ret[transform(k)] = v;
        }
        else {
            ret[transform(k)] = transformObjectKeys(v, transform, childExclude);
        }
    }
    return ret;
}
exports.transformObjectKeys = transformObjectKeys;
/**
 * This function lower cases the first character of the string provided.
 */
function lowerCaseFirstCharacter(str) {
    return str.length > 0 ? `${str[0].toLowerCase()}${str.slice(1)}` : str;
}
exports.lowerCaseFirstCharacter = lowerCaseFirstCharacter;
class ClassifiedChanges {
    constructor(change, hotswappableProps, nonHotswappableProps) {
        this.change = change;
        this.hotswappableProps = hotswappableProps;
        this.nonHotswappableProps = nonHotswappableProps;
    }
    reportNonHotswappablePropertyChanges(ret) {
        const nonHotswappablePropNames = Object.keys(this.nonHotswappableProps);
        if (nonHotswappablePropNames.length > 0) {
            const tagOnlyChange = nonHotswappablePropNames.length === 1 && nonHotswappablePropNames[0] === 'Tags';
            reportNonHotswappableChange(ret, this.change, this.nonHotswappableProps, tagOnlyChange ? 'Tags are not hotswappable' : `resource properties '${nonHotswappablePropNames}' are not hotswappable on this resource type`);
        }
    }
    get namesOfHotswappableProps() {
        return Object.keys(this.hotswappableProps);
    }
}
exports.ClassifiedChanges = ClassifiedChanges;
function classifyChanges(xs, hotswappablePropNames) {
    const hotswappableProps = {};
    const nonHotswappableProps = {};
    for (const [name, propDiff] of Object.entries(xs.propertyUpdates)) {
        if (hotswappablePropNames.includes(name)) {
            hotswappableProps[name] = propDiff;
        }
        else {
            nonHotswappableProps[name] = propDiff;
        }
    }
    return new ClassifiedChanges(xs, hotswappableProps, nonHotswappableProps);
}
exports.classifyChanges = classifyChanges;
function reportNonHotswappableChange(ret, change, nonHotswappableProps, reason, hotswapOnlyVisible) {
    let hotswapOnlyVisibility = true;
    if (hotswapOnlyVisible === false) {
        hotswapOnlyVisibility = false;
    }
    ret.push({
        hotswappable: false,
        rejectedChanges: Object.keys(nonHotswappableProps ?? change.propertyUpdates),
        logicalId: change.logicalId,
        resourceType: change.newValue.Type,
        reason,
        hotswapOnlyVisible: hotswapOnlyVisibility,
    });
}
exports.reportNonHotswappableChange = reportNonHotswappableChange;
function reportNonHotswappableResource(change, reason) {
    return [{
            hotswappable: false,
            rejectedChanges: Object.keys(change.propertyUpdates),
            logicalId: change.logicalId,
            resourceType: change.newValue.Type,
            reason,
        }];
}
exports.reportNonHotswappableResource = reportNonHotswappableResource;
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Does not affect\n   * listing in FALL_BACK mode.\n   *\n   * @default true\n   */\n  readonly hotswapOnlyVisible?: boolean;\n}\n\nexport type ChangeHotswapResult = Array<HotswappableChange | NonHotswappableChange>;\n\nexport interface ClassifiedResourceChanges {\n  hotswappableChanges: HotswappableChange[];\n  nonHotswappableChanges: NonHotswappableChange[];\n}\n\nexport enum HotswapMode {\n  /**\n   * Will fall back to CloudFormation when a non-hotswappable change is detected\n   */\n  FALL_BACK = 'fall-back',\n\n  /**\n   * Will not fall back to CloudFormation when a non-hotswappable change is detected\n   */\n  HOTSWAP_ONLY = 'hotswap-only',\n\n  /**\n   * Will not attempt to hotswap anything and instead go straight to CloudFormation\n   */\n  FULL_DEPLOYMENT = 'full-deployment',\n}\n\n/**\n * Represents a change that can be hotswapped.\n */\nexport class HotswappableChangeCandidate {\n  /**\n   * The logical ID of the resource which is being changed\n   */\n  public readonly logicalId: string;\n\n  /**\n   * The value the resource is being updated from\n   */\n  public readonly oldValue: cfn_diff.Resource;\n\n  /**\n   * The value the resource is being updated to\n   */\n  public readonly newValue: cfn_diff.Resource;\n\n  /**\n   * The changes made to the resource properties\n   */\n  public readonly propertyUpdates: PropDiffs;\n\n  public constructor(logicalId: string, oldValue: cfn_diff.Resource, newValue: cfn_diff.Resource, propertyUpdates: PropDiffs) {\n    this.logicalId = logicalId;\n    this.oldValue = oldValue;\n    this.newValue = newValue;\n    this.propertyUpdates = propertyUpdates;\n  }\n}\n\ntype Exclude = { [key: string]: Exclude | true }\n\n/**\n * This function transforms all keys (recursively) in the provided `val` object.\n *\n * @param val The object whose keys need to be transformed.\n * @param transform The function that will be applied to each key.\n * @param exclude The keys that will not be transformed and copied to output directly\n * @returns A new object with the same values as `val`, but with all keys transformed according to `transform`.\n */\nexport function transformObjectKeys(val: any, transform: (str: string) => string, exclude: Exclude = {}): any {\n  if (val == null || typeof val !== 'object') {\n    return val;\n  }\n  if (Array.isArray(val)) {\n    // For arrays we just pass parent's exclude object directly\n    // since it makes no sense to specify different exclude options for each array element\n    return val.map((input: any) => transformObjectKeys(input, transform, exclude));\n  }\n  const ret: { [k: string]: any; } = {};\n  for (const [k, v] of Object.entries(val)) {\n    const childExclude = exclude[k];\n    if (childExclude === true) {\n      // we don't transform this object if the key is specified in exclude\n      ret[transform(k)] = v;\n    } else {\n      ret[transform(k)] = transformObjectKeys(v, transform, childExclude);\n    }\n  }\n  return ret;\n}\n\n/**\n * This function lower cases the first character of the string provided.\n */\nexport function lowerCaseFirstCharacter(str: string): string {\n  return str.length > 0 ? `${str[0].toLowerCase()}${str.slice(1)}` : str;\n}\n\nexport type PropDiffs = Record<string, cfn_diff.PropertyDifference<any>>;\n\nexport class ClassifiedChanges {\n  public constructor(\n    public readonly change: HotswappableChangeCandidate,\n    public readonly hotswappableProps: PropDiffs,\n    public readonly nonHotswappableProps: PropDiffs,\n  ) { }\n\n  public reportNonHotswappablePropertyChanges(ret: ChangeHotswapResult):void {\n    const nonHotswappablePropNames = Object.keys(this.nonHotswappableProps);\n    if (nonHotswappablePropNames.length > 0) {\n      const tagOnlyChange = nonHotswappablePropNames.length === 1 && nonHotswappablePropNames[0] === 'Tags';\n      reportNonHotswappableChange(\n        ret,\n        this.change,\n        this.nonHotswappableProps,\n        tagOnlyChange ? 'Tags are not hotswappable' : `resource properties '${nonHotswappablePropNames}' are not hotswappable on this resource type`,\n      );\n    }\n  }\n\n  public get namesOfHotswappableProps(): string[] {\n    return Object.keys(this.hotswappableProps);\n  }\n}\n\nexport function classifyChanges(\n  xs: HotswappableChangeCandidate,\n  hotswappablePropNames: string[],\n): ClassifiedChanges {\n  const hotswappableProps: PropDiffs = {};\n  const nonHotswappableProps: PropDiffs = {};\n\n  for (const [name, propDiff] of Object.entries(xs.propertyUpdates)) {\n    if (hotswappablePropNames.includes(name)) {\n      hotswappableProps[name] = propDiff;\n    } else {\n      nonHotswappableProps[name] = propDiff;\n    }\n  }\n\n  return new ClassifiedChanges(xs, hotswappableProps, nonHotswappableProps);\n}\n\nexport function reportNonHotswappableChange(\n  ret: ChangeHotswapResult,\n  change: HotswappableChangeCandidate,\n  nonHotswappableProps?: PropDiffs,\n  reason?: string,\n  hotswapOnlyVisible?: boolean,\n): void {\n  let hotswapOnlyVisibility = true;\n  if (hotswapOnlyVisible === false) {\n    hotswapOnlyVisibility = false;\n  }\n  ret.push({\n    hotswappable: false,\n    rejectedChanges: Object.keys(nonHotswappableProps ?? change.propertyUpdates),\n    logicalId: change.logicalId,\n    resourceType: change.newValue.Type,\n    reason,\n    hotswapOnlyVisible: hotswapOnlyVisibility,\n  });\n}\n\nexport function reportNonHotswappableResource(\n  change: HotswappableChangeCandidate,\n  reason?: string,\n): ChangeHotswapResult {\n  return [{\n    hotswappable: false,\n    rejectedChanges: Object.keys(change.propertyUpdates),\n    logicalId: change.logicalId,\n    resourceType: change.newValue.Type,\n    reason,\n  }];\n}\n"]}