serverless/lib/actions/RegionCreate.js
2016-02-18 18:44:11 +07:00

258 lines
7.9 KiB
JavaScript

'use strict';
/**
* Action: RegionCreate
* - Creates new region for your project in a provided stage. If project only
* has one stage, no stage needs to be provided.
* - Creates a new project S3 bucket for the new region and puts env and CF files
* - Creates CF stack by default, unless noExeCf option is set to true
* - Updates the project's s-project.json file with the new region
*
* Options:
* - region (String) the name of the new region
* - stage (String) the name of the stage you want to create a region in. Optional if only one stage in project.
* - noExeCf: (Boolean) Don't execute CloudFormation
*/
module.exports = function(SPlugin, serverlessPath) {
const path = require('path'),
SError = require(path.join(serverlessPath, 'Error')),
SCli = require(path.join(serverlessPath, 'utils/cli')),
BbPromise = require('bluebird'),
SUtils = require(path.join(serverlessPath, 'utils'));
/**
* RegionCreate Class
*/
class RegionCreate extends SPlugin {
constructor(S, config) {
super(S, config);
}
static getName() {
return 'serverless.core.' + RegionCreate.name;
}
registerActions() {
this.S.addAction(this.regionCreate.bind(this), {
handler: 'regionCreate',
description: `Creates new region for a stage in a project
usage: serverless region create`,
context: 'region',
contextAction: 'create',
options: [
{
option: 'region',
shortcut: 'r',
description: 'AWS lambda supported region for a stage.'
},
{
option: 'stage',
shortcut: 's',
description: 'The stage your want to create a region for.'
},
{
option: 'noExeCf',
shortcut: 'c',
description: 'Prevents creating a ENV file in your project bucket for this region'
}
]
});
return BbPromise.resolve();
}
/**
* Action
*/
regionCreate(evt) {
let _this = this;
_this.evt = evt;
return _this._prompt()
.bind(_this)
.then(_this._validateAndPrepare)
.then(function() {
// Status
SCli.log('Creating region "' + _this.evt.options.region + '" in stage "' + _this.evt.options.stage + '"...');
})
.then(_this._createProjectBucket)
.then(_this._putEnvFile)
.then(_this._deployResources)
.then(function() {
SCli.log('Successfully created region "' + _this.evt.options.region + '" within stage "' + _this.evt.options.stage + '"');
/**
* Return EVT
*/
return _this.evt;
});
}
/**
* Prompt stage and region
*/
_prompt() {
// Skip if non-interactive or stage is provided
if (!this.S.config.interactive || (this.evt.options.stage && this.evt.options.region)) return BbPromise.resolve();
return this.cliPromptSelectStage('Select an existing stage for your new region: ', this.evt.options.stage, false)
.then(stage => this.evt.options.stage = stage)
.then(() => this.cliPromptSelectRegion('Select a new region for your existing stage: ', false, false, this.evt.options.region, this.evt.options.stage))
.then(region => this.evt.options.region = region);
}
/**
* Validate & Prepare
* - Validate all data from event, interactive CLI or non interactive CLI
* and prepare data
*/
_validateAndPrepare() {
let _this = this;
// Check Params
if (!_this.evt.options.stage || !_this.evt.options.region) {
return BbPromise.reject(new SError('Missing stage or region'));
}
// Validate stage: make sure stage exists
if (!_this.S.getProject().validateStageExists(_this.evt.options.stage)) {
return BbPromise.reject(new SError('Stage ' + _this.evt.options.stage + ' does not exist in your project', SError.errorCodes.UNKNOWN));
}
// Validate region: make sure Lambda is supported in that region
if (this.S.getProvider('aws').validLambdaRegions.indexOf(_this.evt.options.region) == -1) {
return BbPromise.reject(new SError('Invalid region. Lambda not supported in ' + _this.evt.options.region));
}
// Validate region: make sure region is not already defined
if (_this.S.getProject().validateRegionExists(_this.evt.options.stage, _this.evt.options.region)) {
return BbPromise.reject(new SError('Region "' + _this.evt.options.region + '" already exists in stage "' + _this.evt.options.stage + '"'));
}
// Update and save Meta
_this.meta = _this.S.state.getMeta();
_this.meta.stages[_this.evt.options.stage].regions[_this.evt.options.region] = {
variables: {
region: _this.evt.options.region
}
};
return _this.meta.save();
}
/**
* Create Project Bucket
*/
_createProjectBucket() {
let _this = this;
if (this.evt.options.noExeCf) {
// If no CloudFormation is set, skip project bucket creation
this.projectBucket = 'SET_YOUR_PROJECT_BUCKET_NAME_HERE';
SCli.log('Notice -- Skipping project bucket creation. Don\'t forget to point this project to your existing project bucket in _meta/s-variables-common.json. You will also need to manually create the file structure on the bucket and add a .env file to the tour first stage folder (e.g., "dev").');
return BbPromise.resolve();
}
// Create bucket, or skip if already exists
const stage = this.evt.options.stage,
region = this.evt.options.region,
bucketName = this.S.state.getMeta().variables.projectBucket;
return this.S.getProvider('aws')
.request('S3', 'getBucketAcl', { Bucket: bucketName }, stage, region)
.then(() => SUtils.sDebug(`Project bucket already exists: ${bucketName}`))
.catch(function(err) {
if (err.code == 'AccessDenied') {
throw new SError(
`S3 Bucket "${bucketName}" already exists and you do not have permissions to use it`,
SError.errorCodes.ACCESS_DENIED
);
} else if (err.code == 'NoSuchBucket') {
SCli.log('Creating your project bucket on S3: ' + bucketName + '...');
return _this.S.getProvider('aws')
.request('S3', 'createBucket', {Bucket: bucketName, ACL: 'private'}, stage, region);
} else {
// Otherwise throw error
throw new SError(err);
}
});
}
/**
* Put ENV File
* - Creates ENV file in Serverless stage/region bucket
*/
_putEnvFile() {
const projectName = this.S.getProject().name,
stage = this.evt.options.stage,
region = this.evt.options.region,
key = ['serverless', projectName, stage, region, 'envVars', '.env'].join('/');
// If noExeCf option, skip
if (this.evt.options.noExeCf) return BbPromise.resolve();
// Create ENV file in new region
let envFileContents = `SERVERLESS_STAGE=${stage}
SERVERLESS_DATA_MODEL_STAGE=${stage}
SERVERLESS_PROJECT_NAME=${projectName}`;
let params = {
Bucket: this.S.state.getMeta().variables.projectBucket,
Key: key,
ACL: 'private',
ContentType: 'text/plain',
Body: envFileContents
};
return this.S.getProvider('aws')
.request('S3', 'putObject', params, stage, region);
}
/**
* Deploy Resources to Stage/Region
*/
_deployResources() {
return this.S.actions.resourcesDeploy({
options: {
stage: this.evt.options.stage,
region: this.evt.options.region,
noExeCf: this.evt.options.noExeCf ? true : false
}
});
}
}
return( RegionCreate );
};