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<?php |
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namespace TraderInteractive\Chef; |
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class ChefEc2 |
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{ |
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/** |
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* @var string The base command for knife. |
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*/ |
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private $baseKnifeCommand; |
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/** |
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* @var string The url for the chef API. |
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*/ |
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private $chefServerUrl; |
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/** |
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* @var array The credentials needed to interact with knife-ec2. |
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*/ |
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private $credentials; |
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/** |
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* Initialize the wrapper around knife-ec2. |
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* |
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* @param string $baseKnifeCommand The base command for knife. could be 'knife' if knife is already in the path. |
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* If using bundler to install knife-ec2, you could do something |
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* like 'BUNDLE_GEMFILE=/path/to/Gemfile bundle exec knife'. |
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* @param string $chefServerUrl The url for the chef API. |
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* @param array $credentials The credentials needed to interact with knife-ec2. Includes awsAccessKeyId and |
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* awsSecretAccessKey. |
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*/ |
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public function __construct(string $baseKnifeCommand, string $chefServerUrl, array $credentials) |
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{ |
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$this->baseKnifeCommand = $baseKnifeCommand; |
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$this->chefServerUrl = $chefServerUrl; |
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$this->credentials = $credentials; |
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} |
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/** |
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* Instantiate a new server. |
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* |
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* @param string $region The AWS region the server is in. |
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* @param string $ami The region-specific AMI to use. |
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* @param string $flavor The flavor of server to create, e.g. t1.micro. |
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* @param array $runList The roles/recipes for the chef run list. |
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* @param string $progressFile A file path to store the server output in. |
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* @param array $options Additional options for knife-ec2. For example: ['-groups' => 'foo'] |
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* @param array $tags Tags to set for the server. |
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* @param string $chefVersion The chef version to use to bootstrap the server. |
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* |
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* @return void |
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*/ |
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public function createServer( |
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string $region, |
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string $ami, |
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string $flavor, |
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array $runList, |
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string $progressFile, |
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array $options = [], |
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array $tags = [], |
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string $chefVersion = '11.8.0' |
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) { |
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$tagList = []; |
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foreach ($tags as $key => $value) { |
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$tagList[] = "{$key}={$value}"; |
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} |
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$fullOptions = [ |
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'--region' => $region, |
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'--image' => $ami, |
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'--flavor' => $flavor, |
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'--run-list' => implode(',', $runList), |
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'--tags' => implode(',', $tagList), |
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'--bootstrap-version' => $chefVersion, |
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]; |
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$fullOptions += $options; |
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$fullOptions += $this->awsCredentialParameters(); |
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$fullOptions += $this->chefClientParameters(); |
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$fullOptions += $this->ec2SshParameters(); |
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$command = \Hiatus\addArguments("{$this->baseKnifeCommand} ec2 server create", $fullOptions); |
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\Hiatus\execX("{$command} >" . escapeshellarg($progressFile) . ' 2>&1 &'); |
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} |
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/** |
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* Runs chef client on the servers that match the query storing command output in the given file. |
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* |
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* @param string $query The chef query to specify what servers to update. |
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* @param string $progressFile The filename to send the knife output to. |
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* @param array $options Additional options for knife ssh. For example: ['-groups' => 'foo'] |
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* @param array $chefOptions Additional options for chef client. For example: ['--override-runlist' => 'role[foo]'] |
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* @return void |
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*/ |
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public function updateServers( |
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string $query, |
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string $progressFile = null, |
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array $options = [], |
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array $chefOptions = [] |
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) { |
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$instanceIdUrl = 'http://169.254.169.254/latest/meta-data/instance-id'; |
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$chefOptions = array_merge($chefOptions, ['--json-attributes' => '/etc/chef/first-boot.json']); |
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$chefCommand = \Hiatus\addArguments("sudo chef-client -N `curl {$instanceIdUrl}`", $chefOptions); |
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$options = array_merge( |
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$options, |
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$this->chefClientParameters(), |
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$this->ec2SshParameters(), |
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[$query, $chefCommand] |
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); |
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$command = \Hiatus\addArguments("{$this->baseKnifeCommand} ssh", $options); |
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if ($progressFile !== null) { |
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\Hiatus\execX("{$command} >" . escapeshellarg($progressFile) . ' 2>&1 &'); |
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} else { |
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passthru($command); |
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} |
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} |
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/** |
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* Get the knife-ec2 parameters for basic AWS API credentials. |
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* |
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* @return array The parameters to access AWS via knife-ec2. |
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*/ |
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private function awsCredentialParameters() : array |
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{ |
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return [ |
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'--aws-access-key-id' => $this->credentials['awsAccessKeyId'], |
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'--aws-secret-access-key' => $this->credentials['awsSecretAccessKey'], |
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]; |
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} |
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/** |
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* Get the chef client parameters. |
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* |
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* @return array The parameters to access the chef API via knife. |
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*/ |
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private function chefClientParameters() : array |
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{ |
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return [ |
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'--server-url' => $this->chefServerUrl, |
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'--user' => $this->credentials['chefClientName'], |
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'--key' => $this->credentials['chefClientKey'], |
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]; |
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} |
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/** |
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* Get the EC2 SSH parameters. |
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* |
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* @return array The parameters to access the EC2 ssh servers |
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*/ |
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private function ec2SshParameters() : array |
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{ |
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return [ |
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'--ssh-user' => $this->credentials['ec2SshUser'], |
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'--identity-file' => $this->credentials['ec2SshKey'], |
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]; |
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} |
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} |
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traderinteractive /
chef-php
