Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php |
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| 7 | class DeployDispatcher extends Dispatcher { |
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| 8 | |||
| 9 | const ACTION_DEPLOY = 'deploys'; |
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| 10 | |||
| 11 | /** |
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| 12 | * @var array |
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| 13 | */ |
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| 14 | private static $allowed_actions = [ |
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| 15 | 'history', |
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| 16 | 'upcoming', |
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| 17 | 'currentbuild', |
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| 18 | 'show', |
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| 19 | 'log', |
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| 20 | 'create', |
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| 21 | 'createdeployment' |
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| 22 | ]; |
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| 23 | |||
| 24 | private static $dependencies = [ |
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| 25 | 'formatter' => '%$DeploynautAPIFormatter' |
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| 26 | ]; |
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| 27 | |||
| 28 | /** |
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| 29 | * @var \DNProject |
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| 30 | */ |
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| 31 | protected $project = null; |
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| 32 | |||
| 33 | /** |
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| 34 | * @var \DNEnvironment |
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| 35 | */ |
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| 36 | protected $environment = null; |
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| 37 | |||
| 38 | /** |
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| 39 | * @var array |
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| 40 | */ |
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| 41 | private static $action_types = [ |
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| 42 | self::ACTION_DEPLOY |
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| 43 | ]; |
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| 44 | |||
| 45 | View Code Duplication | public function init() { |
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| 46 | parent::init(); |
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| 47 | |||
| 48 | $this->project = $this->getCurrentProject(); |
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| 49 | |||
| 50 | if (!$this->project) { |
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| 51 | return $this->project404Response(); |
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| 52 | } |
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| 53 | |||
| 54 | // Performs canView permission check by limiting visible projects |
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| 55 | $this->environment = $this->getCurrentEnvironment($this->project); |
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| 56 | if (!$this->environment) { |
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| 57 | return $this->environment404Response(); |
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| 58 | } |
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| 59 | } |
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| 60 | |||
| 61 | /** |
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| 62 | * @param \SS_HTTPRequest $request |
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| 63 | * @return \HTMLText|\SS_HTTPResponse |
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| 64 | */ |
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| 65 | public function index(\SS_HTTPRequest $request) { |
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| 66 | return $this->redirect(\Controller::join_links($this->Link(), 'history'), 302); |
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| 67 | } |
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| 68 | |||
| 69 | /** |
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| 70 | * @param \SS_HTTPRequest $request |
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| 71 | * @return \SS_HTTPResponse |
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| 72 | */ |
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| 73 | View Code Duplication | public function history(SS_HTTPRequest $request) { |
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| 74 | $data = []; |
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| 75 | |||
| 76 | $list = $this->environment->DeployHistory('DeployStarted'); |
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| 77 | |||
| 78 | foreach ($list as $deployment) { |
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| 79 | $data[] = $this->formatter->getDeploymentData($deployment); |
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| 80 | } |
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| 81 | |||
| 82 | return $this->getAPIResponse([ |
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| 83 | 'list' => $data, |
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| 84 | ], 200); |
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| 85 | } |
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| 86 | |||
| 87 | /** |
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| 88 | * @param \SS_HTTPRequest $request |
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| 89 | * @return \SS_HTTPResponse |
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| 90 | */ |
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| 91 | View Code Duplication | public function upcoming(SS_HTTPRequest $request) { |
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| 92 | $data = []; |
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| 93 | $list = $this->environment->UpcomingDeployments(); |
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| 94 | foreach ($list as $deployment) { |
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| 95 | $data[] = $this->formatter->getDeploymentData($deployment); |
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| 96 | } |
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| 97 | return $this->getAPIResponse([ |
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| 98 | 'list' => $data, |
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| 99 | ], 200); |
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| 100 | } |
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| 101 | |||
| 102 | /** |
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| 103 | * @param \SS_HTTPRequest $request |
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| 104 | * @return \SS_HTTPResponse |
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| 105 | */ |
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| 106 | public function currentbuild(SS_HTTPRequest $request) { |
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| 107 | $currentBuild = $this->environment->CurrentBuild(); |
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| 108 | if (!$currentBuild) { |
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| 109 | return $this->getAPIResponse(['deployment' => []], 200); |
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| 110 | } |
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| 111 | return $this->getAPIResponse(['deployment' => $this->formatter->getDeploymentData($currentBuild)], 200); |
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| 112 | } |
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| 113 | |||
| 114 | /** |
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| 115 | * @param \SS_HTTPRequest $request |
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| 116 | * @return \SS_HTTPResponse |
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| 117 | */ |
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| 118 | public function show(SS_HTTPRequest $request) { |
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| 119 | $deployment = DNDeployment::get()->byId($request->param('ID')); |
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| 120 | $errorResponse = $this->validateDeployment($deployment); |
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| 121 | if ($errorResponse instanceof \SS_HTTPResponse) { |
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| 122 | return $errorResponse; |
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| 123 | } |
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| 124 | return $this->getAPIResponse(['deployment' => $this->formatter->getDeploymentData($deployment)], 200); |
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| 125 | } |
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| 126 | |||
| 127 | /** |
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| 128 | * @param \SS_HTTPRequest $request |
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| 129 | * @return \SS_HTTPResponse |
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| 130 | */ |
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| 131 | public function log(SS_HTTPRequest $request) { |
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| 132 | $deployment = DNDeployment::get()->byId($request->param('ID')); |
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| 133 | $errorResponse = $this->validateDeployment($deployment); |
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| 134 | if ($errorResponse instanceof \SS_HTTPResponse) { |
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| 135 | return $errorResponse; |
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| 136 | } |
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| 137 | $log = $deployment->log(); |
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| 138 | $content = $log->exists() ? $log->content() : 'Waiting for action to start'; |
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| 139 | $lines = explode(PHP_EOL, $content); |
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| 140 | |||
| 141 | return $this->getAPIResponse([ |
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| 142 | 'message' => $lines, |
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| 143 | 'status' => $deployment->Status, |
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| 144 | 'deployment' => $this->formatter->getDeploymentData($deployment), |
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| 145 | ], 200); |
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| 146 | } |
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| 147 | |||
| 148 | /** |
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| 149 | * Create deployment. Can't use {@link create()} as it's taken by Object. |
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| 150 | * |
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| 151 | * @param \SS_HTTPRequest $request |
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| 152 | * @return \SS_HTTPResponse |
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| 153 | */ |
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| 154 | public function createdeployment(SS_HTTPRequest $request) { |
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| 155 | if ($request->httpMethod() !== 'POST') { |
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| 156 | return $this->getAPIResponse(['message' => 'Method not allowed, requires POST'], 405); |
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| 157 | } |
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| 158 | |||
| 159 | $this->checkSecurityToken(); |
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| 160 | |||
| 161 | // @todo the strategy should have been saved when there has been a request for an |
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| 162 | // approval or a bypass. This saved state needs to be checked if it's invalidated |
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| 163 | // if another deploy happens before this one |
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| 164 | $isBranchDeploy = (int) $request->postVar('ref_type') === GitDispatcher::REF_TYPE_BRANCH; |
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| 165 | |||
| 166 | $options = [ |
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| 167 | 'sha' => $request->postVar('ref'), |
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| 168 | 'ref_type' => $request->postVar('ref_type'), |
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| 169 | 'branch' => $isBranchDeploy ? $request->postVar('ref_name') : null, |
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| 170 | 'summary' => $request->postVar('summary') |
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| 171 | ]; |
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| 172 | $strategy = $this->environment->Backend()->planDeploy($this->environment, $options); |
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| 173 | |||
| 174 | $strategy->fromArray($request->postVars()); |
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| 175 | $deployment = $strategy->createDeployment(); |
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| 176 | |||
| 177 | $deployment->getMachine()->apply(DNDeployment::TR_SUBMIT); |
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| 178 | |||
| 179 | return $this->getAPIResponse([ |
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| 180 | 'message' => 'Deployment has been created', |
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| 181 | 'deployment' => $this->formatter->getDeploymentData($deployment), |
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| 182 | ], 201); |
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| 183 | } |
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| 184 | |||
| 185 | /** |
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| 186 | * @param \SS_HTTPRequest $request |
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| 187 | * @return \SS_HTTPResponse |
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| 188 | */ |
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| 189 | public function start(SS_HTTPRequest $request) { |
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| 190 | if ($request->httpMethod() !== 'POST') { |
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| 191 | return $this->getAPIResponse(['message' => 'Method not allowed, requires POST'], 405); |
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| 192 | } |
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| 193 | |||
| 194 | $this->checkSecurityToken(); |
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| 195 | |||
| 196 | $deployment = DNDeployment::get()->byId($request->postVar('id')); |
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| 197 | if (!$deployment || !$deployment->exists()) { |
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| 198 | return $this->getAPIResponse(['message' => 'This deployment does not exist'], 404); |
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| 199 | } |
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| 200 | |||
| 201 | // The deployment cannot be started until it has been approved, or bypassed straight to approved state |
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| 202 | if ($deployment->State != DNDeployment::STATE_APPROVED) { |
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| 203 | return $this->getAPIResponse(['message' => 'This deployment has not been approved. Cannot deploy'], 403); |
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| 204 | } |
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| 205 | |||
| 206 | // until we have a system that can invalidate currently scheduled deployments due |
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| 207 | // to emergency deploys etc, replan the deployment to check if it's still valid. |
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| 208 | $options = $deployment->getDeploymentStrategy()->getOptions(); |
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| 209 | $strategy = $this->environment->Backend()->planDeploy($this->environment, $options); |
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| 210 | $deployment->Strategy = $strategy->toJSON(); |
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| 211 | $deployment->write(); |
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| 212 | |||
| 213 | $deployment->getMachine()->apply(DNDeployment::TR_QUEUE); |
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| 214 | |||
| 215 | $location = \Controller::join_links(Director::absoluteBaseURL(), $this->Link('log'), $deployment->ID); |
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| 216 | |||
| 217 | $response = $this->getAPIResponse([ |
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| 218 | 'message' => 'Deployment has been queued', |
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| 219 | 'location' => $location, |
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| 220 | 'deployment' => $this->formatter->getDeploymentData($deployment), |
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| 221 | ], 201); |
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| 222 | |||
| 223 | $response->addHeader('Location', $location); |
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| 224 | |||
| 225 | return $response; |
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| 226 | } |
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| 227 | |||
| 228 | /** |
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| 229 | * @param string $action |
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| 230 | * @return string |
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| 231 | */ |
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| 232 | public function Link($action = '') { |
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| 235 | |||
| 236 | /** |
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| 237 | * @param string $name |
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| 238 | * @return array |
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| 239 | */ |
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| 240 | public function getModel($name = '') { |
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| 243 | |||
| 244 | /** |
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| 245 | * Check if a DNDeployment exists and do permission checks on it. If there is something wrong it will return |
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| 246 | * an APIResponse with the error, otherwise null. |
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| 247 | * |
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| 248 | * @param \DNDeployment $deployment |
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| 249 | * |
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| 250 | * @return null|SS_HTTPResponse |
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| 251 | */ |
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| 252 | View Code Duplication | protected function validateDeployment(\DNDeployment $deployment) { |
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| 264 | |||
| 265 | } |
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| 266 |
This check marks property names that have not been written in camelCase.
In camelCase names are written without any punctuation, the start of each new word being marked by a capital letter. Thus the name database connection string becomes
databaseConnectionString.