All files / src/service RuleGroupDataSourceService.ts

100% Statements 61/61
88.46% Branches 46/52
100% Functions 10/10
100% Lines 58/58

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 16015x 15x   15x 15x   15x 15x   15x       28x 28x   28x 28x       7x           7x   7x         5x 5x                       5x 5x 5x 5x           3x 3x 1x     2x 2x 2x       2x   2x               2x 2x         1x 1x 1x 1x               1x   1x   1x       2x 2x   2x                                 2x 2x 3x 3x   3x 3x 3x 3x 3x 3x 3x   2x       2x 2x 2x 1x   1x                     1x        
import { DeleteItemCommand, DynamoDBClient, GetItemCommand, PutItemCommand, PutItemCommandInput, QueryCommand, QueryCommandInput, ScanCommand } from "@aws-sdk/client-dynamodb"; // ES Modules 
import { marshall, unmarshall } from '@aws-sdk/util-dynamodb';
import { FlowRule, FlowRuleBundle, Logger, LoggerFactory, PaginatedResults } from 'shared_types';
import { AppConfiguration } from 'src/common/configuration/AppConfiguration';
import RuleConfigError from "src/common/RuleConfigError";
import { CreateRuleBundleInput, UpdateRuleBundleInput } from "src/types/RuleGroups";
import { inject, injectable } from 'tsyringe';
import { v4 as uuidv4 } from 'uuid';
@injectable()
export class RuleGroupDataSourceService {
    logger: Logger;
    ruleGroupTableName: string;
    constructor(@inject('LoggerFactory') loggerFactory: LoggerFactory,
        @inject('DynamoDBClient') private dynamoDBClient: DynamoDBClient,
        @inject('AppConfiguration') private appConfiguration: AppConfiguration,
    ) {
        this.logger = loggerFactory.getLogger('RuleGroupDataSourceService');
        this.ruleGroupTableName = this.appConfiguration.getDefinitionSourceFor('RULEGROUP')?.tableName ?? '';
    }
 
    public async getRuleGroupBy(id: string): Promise<FlowRuleBundle | undefined> {
        const getItemCommand: GetItemCommand = new GetItemCommand(
            {
                Key: marshall({ id: id }),
                TableName: this.ruleGroupTableName
            }
        );
        const { Item: item } = await this.dynamoDBClient.send(getItemCommand);
 
        return item ? unmarshall(item) as FlowRuleBundle : undefined;
    }
 
    public async getRuleGroups(limit?: number, nextToken?: string, requesterArn?: string ): Promise<PaginatedResults<FlowRuleBundle>> {
 
        this.logger.info(`Scaning table ${this.ruleGroupTableName} with ${limit} and nextToken ${nextToken}`);
        const scanTableCommand: ScanCommand = new ScanCommand(
            {
                TableName: this.ruleGroupTableName,
                ExpressionAttributeNames: {
                    '#ownerGroup': 'ownerGroup'
                },
                FilterExpression: 'contains(#ownerGroup, :requesterArn)',
                ExpressionAttributeValues: marshall({':requesterArn': requesterArn}),
                ...(limit && { Limit: limit }),
                ...(nextToken && { ExclusiveStartKey: marshall({ id: nextToken }) })
            }
        );
        const response = await this.dynamoDBClient.send(scanTableCommand);
        const lastEvaluatedKey = response.LastEvaluatedKey?.id ? unmarshall(response.LastEvaluatedKey) : undefined;
        return {
            results: response.Items?.map(i => unmarshall(i) as FlowRuleBundle) ?? [],
            ...(lastEvaluatedKey && { nextToken: lastEvaluatedKey['id'] })
        };
    }
 
    async updateRuleGroup(input: UpdateRuleBundleInput): Promise<FlowRuleBundle> {
        const currentRuleGroup = await this.getRuleGroupBy(input.id);
        if (!currentRuleGroup) {
            throw new RuleConfigError('Rule group not found', 404, true);
        }
 
        const ruleGroup =  { ...currentRuleGroup, ...input };
        await this.simpleUpdate(ruleGroup);
        return ruleGroup;
    }
 
    private async simpleUpdate(input: FlowRuleBundle) {
        this.logger.info('attempt to update the rule group basic info', input);
        // simple update
        const putCmdInput = {
            TableName: this.ruleGroupTableName,
            Item: marshall(input),
            ConditionExpression: 'attribute_exists(#id)',
            ExpressionAttributeNames: {
                "#id": "id",
            },
        };
        const command = new PutItemCommand(putCmdInput);
        await this.dynamoDBClient.send(command);
        
    }
 
    async createRuleBundle(input: CreateRuleBundleInput): Promise<string> {
        const newId = input.id ?? uuidv4();
        const newRuleGroup = { ...input, id: newId, createdTimestamp: new Date().toISOString() }
        this.logger.info(`creating rule bundle of arn ${newRuleGroup.ruleGroupArn}`);
        const cmdInput: PutItemCommandInput = {
            TableName: this.ruleGroupTableName,
            Item: marshall(newRuleGroup),
            ConditionExpression: 'attribute_not_exists(#id)',
            ExpressionAttributeNames: {
                "#id": "id",
            }
        }
        const command = new PutItemCommand(cmdInput);
 
        await this.dynamoDBClient.send(command);
 
        return newId;
    }
 
    public async getRulesBy(ruleGroupId: string): Promise<FlowRule[]> {
        this.logger.info(`get rules by rule group id => ${ruleGroupId}`);
        const objectTableName = this.appConfiguration.getDefinitionSourceFor('RULE')?.tableName;
 
        const input: QueryCommandInput = {
            TableName: objectTableName,
            IndexName: 'ruleGroupId',
            KeyConditionExpression: "#ruleGroupId = :ruleGroupId",
            ExpressionAttributeValues: marshall({
                ":ruleGroupId": ruleGroupId,
                ":status": 'FAILED',
            }),
            ExpressionAttributeNames: {
                '#ruleGroupId': 'ruleGroupId',
                '#status': 'status'
            },
            FilterExpression: "#status <> :status",
        };
 
        let LastEvaluatedKey;
        let response;
        let results: FlowRule[] = [];
        while (LastEvaluatedKey || !response) {
            input.ExclusiveStartKey = LastEvaluatedKey;
            const command = new QueryCommand(input);
 
            this.logger.info('sending query command to ddb', input);
            response = await this.dynamoDBClient.send(command);
            this.logger.info('dynamoDBClient object', response);
            LastEvaluatedKey = response.LastEvaluatedKey
            const currentBatch = response.Items?.map(element => unmarshall(element) as FlowRule) ?? [];
            this.logger.info('dynamoDBClient currentBatch', currentBatch);
            results = results.concat(currentBatch);
        }
        return results;
    }
 
    public async deleteRuleGroup(ruleGroupId: string): Promise<void> {
        this.logger.info('attempt to delete the rule group basic info', ruleGroupId);
        const currentRuleGroup = await this.getRuleGroupBy(ruleGroupId);
        if (!currentRuleGroup) {
            throw new RuleConfigError(`${ruleGroupId} not exists`, 400);
        }
        const deleteItemCmd: DeleteItemCommand = new DeleteItemCommand(
            {
                Key: marshall({ id: ruleGroupId }),
                TableName: this.ruleGroupTableName,
                ConditionExpression: "attribute_exists(#id)",
                ExpressionAttributeNames: {
                    "#id": "id",
                }
            }
        );
 
        await this.dynamoDBClient.send(deleteItemCmd);
    }
}