ssh-deploy-release

!npm (tag)

> Deploy releases over SSH with rsync, archive ZIP / TAR, symlinks, SCP ...


Example :

```
/deployPath
|
├── www --> symlink to ./releases/
|
├── releases
| ├── 2017-02-08-17-14-21-867-UTC
| ├── ...
| └── 2017-02-09-18-01-10-765-UTC
| ├── ...
| └── logs --> symlink to shared/logs
|
├── synchronized --> folder synchronized with rsync
|
└── shared
└── logs
``


- Installation
- Usage
- Options
- Known issues
- Contributing

Installation

npm install ssh-deploy-release

Usage

$3

``js
const Application = require('ssh-deploy-release');

const options = {
localPath: 'src',
host: 'my.server.com',
username: 'username',
password: 'password',
deployPath: '/var/www/vhost/path/to/project'
};

const deployer = new Application(options);
deployer.deployRelease(() => {
console.log('Ok !')
});
``

$3

``js
const Application = require('ssh-deploy-release');

const options = {
localPath: 'src',
host: 'my.server.com',
username: 'username',
password: 'password',
deployPath: '/var/www/vhost/path/to/project',
allowRemove: true
};

const deployer = new Application(options);
deployer.removeRelease(() => {
console.log('Ok !')
});
``

$3

``js
const Application = require('ssh-deploy-release');

const options = {
localPath: 'src',
host: 'my.server.com',
username: 'username',
password: 'password',
deployPath: '/var/www/vhost/path/to/project'
};

const deployer = new Application(options);
deployer.rollbackToPreviousRelease(() => {
console.log('Ok !')
});
``

The previous release will be renamed before updating the symlink of the current version, for example
2019-01-09-10-53-35-265-UTC will become
2019-01-09-13-46-45-457-UTC_rollback-to_2019-01-09-10-53-35-265-UTC.

If rollbackToPreviousRelease is called several times, the current version
will switch between the last two releases.
current date + "_rollbackTo_" will be prepended to the release name on each call of
rollbackToPreviousRelease so be careful not to exceed the size limit of the folder name.

$3

Use grunt-ssh-deploy-release.

$3

You can use this to deploy from any platform supporting Node >= 8 to Linux servers (most UNIX systems should work as well but this hasn't been tested).

Due to how we implemented the deployment process on the remote environment (using shell command execution), supporting Windows would required a lot of specific code, which would make this package harder to maintain. We decided to focus on supporting Linux as its the platform most widely used by hosting providers.

Options

ssh-deploy-release uses ssh2 to handle SSH connections.
The options object is forwarded to ssh2 methods,
which means you can set all ssh2 options:

- ssh2 documentation

#### options.debug
If true, will display all commands.

Default : false


#### options.port
Port used to connect to the remote server.

Default : 22


#### options.host
Remote server hostname.


#### options.username
Username used to connect to the remote server.


#### options.password
Password used to connect to the remote server.

Default: null


#### options.privateKeyFile

Default: null


#### options.passphrase
For an encrypted private key, this is the passphrase used to decrypt it.

Default: null


#### options.agent
To connect using the machine's ssh-agent. The value must be the path to the ssh-agent socket (usually available in the
SSH_AUTH_SOCK environment variable).


#### options.mode
archive : Deploy an archive and decompress it on the remote server.

synchronize : Use rsync. Files are synchronized in the options.synchronized folder on the remote server.

Default : archive


#### options.archiveType
zip : Use zip compression (unzip command on remote)

tar : Use tar gz compression (tar command on remote)

Default : tar


#### options.archiveName
Name of the archive.

Default : release.tar.gz


#### options.deleteLocalArchiveAfterDeployment
Delete the local archive after the deployment.

Default : true


#### options.readyTimeout
SCP connection timeout duration.

Default : 20000


#### options.onKeyboardInteractive
Callback passed to ssh2 client event
keyboard-interactive.

Type: function (name, descr, lang, prompts, finish)

$3

#### options.currentReleaseLink
Name of the current release symbolic link. Relative to deployPath.

Defaut : www


#### options.sharedFolder
Name of the folder containing shared folders. Relative to deployPath.

Default : shared


#### options.releasesFolder
Name of the folder containing releases. Relative to deployPath.

Default : releases


#### options.localPath
Name of the local folder to deploy.

Default : www

⚠ ️In case you need to deploy your whole project directory, do NOT set localPath
to an empty string, null or .. Use process.cwd() to have node generate an
absolute path. In addition to this, if you use the archive mode,
don't forget to exclude the generated archive
(you can define its name using options.archiveName).

Example:

`js
const Application = require('ssh-deploy-release');
const process = require('process');

const deployer = new Application({
localPath: process.cwd(),
exclude: ['release.tar.gz'],
archiveName: 'release.tar.gz',
host: 'my.server.com',
username: 'username',
password: 'password',
deployPath: '/var/www/vhost/path/to/project',
});
`


#### options.deployPath
Absolute path on the remote server where releases will be deployed.
Do not specify currentReleaseLink (or www folder) in this path.


#### options.synchronizedFolder
Name of the remote folder where rsync synchronize release.
Used when mode is 'synchronize'.

Default : www


#### options.rsyncOptions
Additional options for rsync process.

Default : ''

``js
rsyncOptions : '--exclude-from="exclude.txt" --delete-excluded'
``


#### options.compression
Enable the rsync --compression flag. This can be set to a boolean or
an integer to explicitly set the compression level (--compress-level=NUM).

Default : true

$3

#### options.releasesToKeep
Number of releases to keep on the remote server.

Default : 3

#### options.tag
Name of the release. Must be different for each release.

Default : Use current timestamp.

#### options.exclude
List of paths to not deploy.

Paths must be relative to localPath.

The format slightly differ depending on the mode:

glob* format for mode: 'archive'
In order to exclude a folder, you have to explicitly ignore all its descending files using **.
For example: exclude: ['my-folder/**']
> Read glob documentation for more information.
rsync exclude pattern* format for mode: 'synchronize'
In order to exclude a folder, you simply have to list it, all of its descendants will be excluded as well.
For example: exclude: ['my-folder']

For maximum portability, it's strongly advised to use both syntaxes when excluding folders.
For example: exclude: ['my-folder/**', 'my-folder']

Default : []

#### options.share
List of folders to "share" between releases. A symlink will be created for each item.
Item can be either a string or an object (to specify the mode to set to the symlink target).

``js
share: {
'images': 'assets/images',
'upload': {
symlink: 'app/upload',
mode: '777' // Will chmod 777 shared/upload
}
}
``

Keys = Folder to share (relative to sharedFolder)

Values = Symlink path (relative to release folder)

Default : {}

#### options.create
List of folders to create on the remote server.

Default : []


#### options.makeWritable
List of files to make writable on the remote server. (chmod ugo+w)

Default : []

#### options.makeExecutable
List of files to make executable on the remote server. (chmod ugo+x)

Default : []

#### options.allowRemove
If true, the remote release folder can be deleted with removeRelease method.

Default: false

$3

##### context object
The following object is passed to onXXX callbacks :
``js
{
// Loaded configuration
options: { },

// Release
release: {
// Current release name
tag: '2017-01-25-08-40-15-138-UTC',

// Current release path on the remote server
path: '/opt/.../releases/2017-01-25-08-40-15-138-UTC',
},

// Logger methods
logger: {
// Log fatal error and stop process
fatal: (message) => {},

// Log 'subhead' message
subhead: (message) => {},

// Log 'ok' message
ok: (message) => {},

// Log 'error' message and continue process
error: (message) => {},

// Log message, only if options.debug is true
debug: (message) => {},

// Log message
log: (message) => {},

// Start a spinner and display message
// return a stop()
startSpinner: (message) => { return {stop: () => {}}},
},

// Remote server methods
remote: {
// Excute command on the remote server
exec: (command, done, showLog) => {},

// Excute multiple commands (array) on the remote server
execMultiple: (commands, done, showLog) => {},

/*
* Upload local src file to target on the remote server.
* @param {string} src The path to the file to upload.
* May be either absolute or relative to the current working directory.
* @param {string} target The path of the uploaded file on the remote server.
* Must include the filename. The full directory hierarchy to the target must already exist.
* May be either absolute or relative to the remote user home directory.
* We strongly encourage you to use options.deployPath in your target path to produce an absolute path.
*/
upload: (src, target, done) => {},

// Create a symbolic link on the remote server
createSymboliclink: (target, link, done) => {},

// Chmod path on the remote server
chmod: (path, mode, done) => {},

// Create folder on the remote server
createFolder: (path, done) => {},
}
}
``

##### Examples
onBeforeDeploy, onBeforeLink, onAfterDeploy, onBeforeRollback, onAfterRollback options.

###### Single command executed on remote

``js
onAfterDeploy: 'apachectl graceful'
``

Or with a function :

``js
onBeforeLink: context => chgrp -R www ${context.release.path}
``


###### List of commands executed on remote

``js
onAfterDeploy: [
'do something on the remote server',
'and another thing'
]
``

Or with a function :

``js
onBeforeLink: (context) => {
context.logger.subhead('Fine tuning permissions on newly deployed release');
return [
chgrp -R www ${context.release.path},
chmod g+w ${context.release.path}/some/path/that/needs/to/be/writable/by/www/group,
];
}
``


###### Custom callback

``js
onAfterDeploy: context => {
return Promise((resolve, reject) => {
setTimeout(function () {
// Do something
resolve();
}, 5000);
});
}
``




#### options.onBeforeConnect
Executed before connecting to the SSH server to let you initiate a custom
connection. It must return a ssh2 Client instance, and call onReady when that
connection is ready.

Type: function(context, onReady, onError, onClose): Client

Example: SSH jumps (connecting to your deployment server through a bastion)

``js
onBeforeConnect: (context, onReady, onError, onClose) => {
const bastion = new Client();
const connection = new Client();

bastion.on('error', onError);
bastion.on('close', onClose);
bastion.on('ready', () => {
bastion.forwardOut(
'127.0.0.1',
12345,
'www.example.com',
22,
(err, stream) => {
if (err) {
context.logger.fatal(Error connection to the bastion: ${err});
bastion.end();
onClose();
return;
}

connection.connect({
sock: stream,
user: 'www-user',
password: 'www-password',
});
}
);
});

connection.on('error', (err) => {
context.logger.error(err);
bastion.end();
});
connection.on('close', () => {
bastion.end();
});
connection.on('ready', onReady);

bastion.connect({
host: 'bastion.example.com',
user: 'bastion-user',
password: 'bastion-password',
});

return connection;
}
``

#### options.onBeforeDeploy
Executed before deployment.

Type: string | string[] | function(context, done): Promise | undefined


#### options.onBeforeLink
Executed before symlink creation.

Type: string | string[] | function(context, done): Promise | undefined


#### options.onAfterDeploy
Executed after deployment.

Type: string | string[] | function(context, done): Promise | undefined


#### options.onBeforeRollback
Executed before rollback to previous release.

Type: string | string[] | function(context, done): Promise | undefined


#### options.onAfterRollback
Executed after rollback to previous release.

Type: string | string[] | function(context, done): Promise | undefined

Known issues

$3

A command on a callback method is not executed or not found.
Try to add set -i && source ~/.bashrc && before your commmand :

``
onAfterDeploy:[
'set -i && source ~/.bashrc && my command'
]
``

See this issue : https://github.com/mscdex/ssh2/issues/77

Contributing

``bash

Build (with Babel)

npm run build

Build + watch (with Babel)

npm run build -- --watch

Launch tests (Mocha + SinonJS)

npm test

Launch tests + watch (Mocha + SinonJS)

npm test -- --watch
```