@bitblit/ratchet-aws/lib/environment/ssm-environment-service-provider.js

Common tools for use with AWS browser and node

import { RequireRatchet } from '@bitblit/ratchet-common/lang/require-ratchet';
import { Logger } from '@bitblit/ratchet-common/logger/logger';
import { ErrorRatchet } from '@bitblit/ratchet-common/lang/error-ratchet';
import { PromiseRatchet } from '@bitblit/ratchet-common/lang/promise-ratchet';
import { StringRatchet } from '@bitblit/ratchet-common/lang/string-ratchet';
import { GetParameterCommand, ParameterNotFound, SSMClient } from '@aws-sdk/client-ssm';
export class SsmEnvironmentServiceProvider {
    region;
    ssmEncrypted;
    ssm;
    constructor(region = 'us-east-1', ssmEncrypted = true) {
        this.region = region;
        this.ssmEncrypted = ssmEncrypted;
        RequireRatchet.notNullOrUndefined(region);
        RequireRatchet.notNullOrUndefined(ssmEncrypted);
        this.ssm = new SSMClient({ region: this.region });
    }
    async fetchConfig(name) {
        Logger.silly('SsmEnvironmentServiceProvider fetch for %s', name);
        const params = {
            Name: name,
            WithDecryption: this.ssmEncrypted,
        };
        let rval = null;
        let toParse = null;
        try {
            const value = await this.ssm.send(new GetParameterCommand(params));
            toParse = StringRatchet.trimToNull(value?.Parameter?.Value);
        }
        catch (err) {
            if (err instanceof ParameterNotFound) {
                const errMsg = Logger.warn('AWS could not find parameter %s in region %s - are you using the right AWS key?', name, this.region);
                throw new Error(errMsg);
            }
            else if (err.name === 'CredentialsProviderError') {
                Logger.warn('Token is expired - if on SSO cli try "aws sso login"');
                throw err;
            }
            else if ((ErrorRatchet.safeStringifyErr(err) || '').toLowerCase().indexOf('throttl') > -1) {
                Logger.warn('Throttled while trying to read parameters - waiting 1 second before allowing retry');
                await PromiseRatchet.wait(1_000);
            }
            else {
                Logger.error('Final environment fetch error (cannot retry) : %s', err, err);
                throw err;
            }
        }
        if (toParse) {
            try {
                rval = JSON.parse(toParse);
            }
            catch (err) {
                Logger.error('Failed to read env - null or invalid JSON : %s : %s', err, toParse, err);
                throw err;
            }
        }
        else {
            throw ErrorRatchet.fErr('Could not find system parameter with name : %s in this account', name);
        }
        return rval;
    }
}
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