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resource-database.ts
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resource-database.ts
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// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import type * as protos from '../../../protos/index.js';
import {getResourceNameByPattern} from '../util.js';
export interface ResourceDescriptor
extends protos.google.api.IResourceDescriptor {
name: string;
params: string[];
}
export class ResourceDatabase {
patterns: {[pattern: string]: ResourceDescriptor};
types: {[type: string]: ResourceDescriptor};
constructor() {
this.patterns = {};
this.types = {};
}
registerResource(
resource: protos.google.api.IResourceDescriptor | undefined,
errorLocation?: string
) {
if (!resource) {
return;
}
if (!resource.type) {
if (errorLocation) {
console.warn(
`Warning: ${errorLocation} refers to a resource which does not have a type: ${resource}`
);
}
return;
}
const arr = resource.type.match(/\/([^.]+)$/);
if (!arr?.[1]) {
if (errorLocation) {
console.warn(
`Warning: ${errorLocation} refers to a resource which does not have a proper name: ${resource}`
);
}
return;
}
const patterns = resource.pattern;
if (!patterns?.[0]) {
if (errorLocation) {
console.warn(
`Warning: ${errorLocation} refers to a resource which does not have a proper pattern: ${resource}`
);
}
return;
}
const multiPattern = patterns!.length > 1;
// only one pattern exists for the resource.
if (!multiPattern) {
const name = arr![1];
const params = this.getParams(patterns![0]);
const resourceDescriptor = this.getResourceDescriptor(
name,
params,
resource
);
// We ignore resources with no parameters (e.g. pattern = '*').
if (params.length > 0) {
this.patterns[patterns?.[0]] = resourceDescriptor;
this.types[resourceDescriptor.type!] = resourceDescriptor;
}
}
// resource: {name, type, pattern: [p1, p2]}
// register resource does: in type map {type: { name, type, pattern: [p1, p2]} }
// in pattern map {p1: { name1, type, p1} , p2: { name2, type, p2}}
else {
for (const pattern of patterns!) {
const params = this.getParams(pattern);
// We ignore resources with no parameters (e.g. pattern = '*').
if (params.length === 0) {
continue;
}
const name = getResourceNameByPattern(pattern);
let resourceDescriptor: ResourceDescriptor = {
name,
params,
pattern: [pattern],
type: resource.type,
};
this.patterns[pattern] = resourceDescriptor;
resourceDescriptor = this.getResourceDescriptor(name, params, resource);
if (!this.types[resource.type]) {
this.types[resource.type] = resourceDescriptor;
}
}
}
}
getResourceByType(
type: string | null | undefined,
errorLocation?: string
): ResourceDescriptor | undefined {
if (!type) {
return undefined;
}
if (!this.types[type]) {
if (errorLocation) {
console.warn(
`Warning: ${errorLocation} refers to an unknown resource: ${type}`
);
}
return undefined;
}
return this.types[type];
}
getResourceByPattern(
pattern: string | null | undefined,
errorLocation?: string
): ResourceDescriptor | undefined {
if (!pattern) {
return undefined;
}
if (!this.patterns[pattern]) {
if (errorLocation) {
console.warn(
`Warning: ${errorLocation} refers to an unknown resource: ${pattern}`
);
}
return undefined;
}
return this.patterns[pattern];
}
getParentResourcesByChildType(
childType: string | null | undefined,
errorLocation?: string
): ResourceDescriptor[] {
// childType looks like "datacatalog.googleapis.com/EntryGroup"
// its pattern would be like "projects/{project}/locations/{location}/entryGroups/{entry_group}"
const result: ResourceDescriptor[] = [];
if (!childType) {
return result;
}
const childResource = this.getResourceByType(childType, errorLocation);
if (!childResource) {
return result;
}
const childPattern = childResource.pattern?.[0];
if (!childPattern) {
return result;
}
let pattern = '';
for (const segment of childPattern.split('/')) {
if (pattern !== '') {
pattern += '/';
}
pattern += segment;
const parent = this.getResourceByPattern(pattern);
if (parent) {
result.push(parent);
}
}
return result;
}
private getParams(pattern: string): string[] {
const params = pattern.match(/{[a-zA-Z_]+(?:=.*?)?}/g) || [];
const result = params.map(p => p.replace(/{([a-zA-Z_]+).*/, '$1'));
return result;
}
private getResourceDescriptor(
name: string,
params: string[],
resource: protos.google.api.IResourceDescriptor
): ResourceDescriptor {
const resourceDescriptor = Object.assign(
{
name,
params,
},
resource
);
return resourceDescriptor;
}
}