292 lines
8.9 KiB
PHP
292 lines
8.9 KiB
PHP
<?php
|
|
|
|
class Agent {
|
|
private $db;
|
|
|
|
public function __construct($database) {
|
|
$this->db = $database->getConnection();
|
|
}
|
|
|
|
// get details of a specified agent ID (or all) in a specified platform ID
|
|
public function getAgentDetails($platform_id, $agent_id = '') {
|
|
$sql = 'SELECT
|
|
ja.id,
|
|
ja.platform_id,
|
|
ja.agent_type_id,
|
|
ja.url,
|
|
ja.secret_key,
|
|
ja.check_period,
|
|
jat.description AS agent_description,
|
|
jat.endpoint AS agent_endpoint
|
|
FROM
|
|
jilo_agents ja
|
|
JOIN
|
|
jilo_agent_types jat ON ja.agent_type_id = jat.id
|
|
WHERE
|
|
platform_id = :platform_id';
|
|
|
|
if ($agent_id !== '') {
|
|
$sql .= ' AND ja.id = :agent_id';
|
|
}
|
|
|
|
$query = $this->db->prepare($sql);
|
|
|
|
$query->bindParam(':platform_id', $platform_id);
|
|
if ($agent_id !== '') {
|
|
$query->bindParam(':agent_id', $agent_id);
|
|
}
|
|
|
|
$query->execute();
|
|
|
|
return $query->fetchAll(PDO::FETCH_ASSOC);
|
|
}
|
|
|
|
// get details of a specified agent ID
|
|
public function getAgentIDDetails($agent_id) {
|
|
$sql = 'SELECT
|
|
ja.id,
|
|
ja.platform_id,
|
|
ja.agent_type_id,
|
|
ja.url,
|
|
ja.secret_key,
|
|
ja.check_period,
|
|
jat.description AS agent_description,
|
|
jat.endpoint AS agent_endpoint
|
|
FROM
|
|
jilo_agents ja
|
|
JOIN
|
|
jilo_agent_types jat ON ja.agent_type_id = jat.id
|
|
WHERE
|
|
ja.id = :agent_id';
|
|
|
|
$query = $this->db->prepare($sql);
|
|
$query->bindParam(':agent_id', $agent_id);
|
|
$query->execute();
|
|
|
|
return $query->fetchAll(PDO::FETCH_ASSOC);
|
|
}
|
|
|
|
// get agent types
|
|
public function getAgentTypes() {
|
|
$sql = 'SELECT *
|
|
FROM jilo_agent_types
|
|
ORDER BY id';
|
|
$query = $this->db->prepare($sql);
|
|
$query->execute();
|
|
|
|
return $query->fetchAll(PDO::FETCH_ASSOC);
|
|
}
|
|
|
|
// get agent types already configured for a platform
|
|
public function getPlatformAgentTypes($platform_id) {
|
|
$sql = 'SELECT
|
|
id,
|
|
agent_type_id
|
|
FROM
|
|
jilo_agents
|
|
WHERE
|
|
platform_id = :platform_id';
|
|
$query - $this->db->prepare($sql);
|
|
$query->bindParam(':platform_id', $platform_id);
|
|
$query->execute();
|
|
|
|
return $query->fetchAll(PDO::FETCH_ASSOC);
|
|
}
|
|
|
|
// add new agent
|
|
public function addAgent($platform_id, $newAgent) {
|
|
try {
|
|
$sql = 'INSERT INTO jilo_agents
|
|
(platform_id, agent_type_id, url, secret_key, check_period)
|
|
VALUES
|
|
(:platform_id, :agent_type_id, :url, :secret_key, :check_period)';
|
|
|
|
$query = $this->db->prepare($sql);
|
|
$query->execute([
|
|
':platform_id' => $platform_id,
|
|
':agent_type_id' => $newAgent['type_id'],
|
|
':url' => $newAgent['url'],
|
|
':secret_key' => $newAgent['secret_key'],
|
|
':check_period' => $newAgent['check_period'],
|
|
]);
|
|
|
|
return true;
|
|
|
|
} catch (Exception $e) {
|
|
return $e->getMessage();
|
|
}
|
|
}
|
|
|
|
// edit an existing agent
|
|
public function editAgent($platform_id, $updatedAgent) {
|
|
try {
|
|
$sql = 'UPDATE jilo_agents SET
|
|
agent_type_id = :agent_type_id,
|
|
url = :url,
|
|
secret_key = :secret_key,
|
|
check_period = :check_period
|
|
WHERE
|
|
id = :agent_id
|
|
AND
|
|
platform_id = :platform_id';
|
|
|
|
$query = $this->db->prepare($sql);
|
|
$query->execute([
|
|
':agent_type_id' => $updatedAgent['agent_type_id'],
|
|
':url' => $updatedAgent['url'],
|
|
':secret_key' => $updatedAgent['secret_key'],
|
|
':check_period' => $updatedAgent['check_period'],
|
|
':agent_id' => $updatedAgent['id'],
|
|
':platform_id' => $platform_id,
|
|
]);
|
|
|
|
return true;
|
|
|
|
} catch (Exception $e) {
|
|
return $e->getMessage();
|
|
}
|
|
}
|
|
|
|
|
|
// delete an agent
|
|
public function deleteAgent($agent_id) {
|
|
try {
|
|
$sql = 'DELETE FROM jilo_agents
|
|
WHERE
|
|
id = :agent_id';
|
|
|
|
$query = $this->db->prepare($sql);
|
|
$query->bindParam(':agent_id', $agent_id);
|
|
|
|
$query->execute();
|
|
return true;
|
|
|
|
} catch (Exception $e) {
|
|
return $e->getMessage();
|
|
}
|
|
}
|
|
|
|
|
|
// check for agent cache
|
|
public function checkAgentCache($agent_id) {
|
|
$agent_cache_name = 'agent' . $agent_id . '_cache';
|
|
$agent_cache_time = 'agent' . $agent_id . '_time';
|
|
return isset($_SESSION[$agent_cache_name]) && isset($_SESSION[$agent_cache_time]) && (time() - $_SESSION[$agent_cache_time] < 600);
|
|
}
|
|
|
|
|
|
// method for base64 URL encoding for JWT tokens
|
|
private function base64UrlEncode($data) {
|
|
return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
|
|
}
|
|
|
|
|
|
// generate a JWT token for jilo agent
|
|
public function generateAgentToken($payload, $secret_key) {
|
|
|
|
// header
|
|
$header = json_encode([
|
|
'typ' => 'JWT',
|
|
'alg' => 'HS256'
|
|
]);
|
|
$base64Url_header = $this->base64UrlEncode($header);
|
|
|
|
// payload
|
|
$payload = json_encode($payload);
|
|
$base64Url_payload = $this->base64UrlEncode($payload);
|
|
|
|
// signature
|
|
$signature = hash_hmac('sha256', $base64Url_header . "." . $base64Url_payload, $secret_key, true);
|
|
$base64Url_signature = $this->base64UrlEncode($signature);
|
|
|
|
// build the JWT
|
|
$jwt = $base64Url_header . "." . $base64Url_payload . "." . $base64Url_signature;
|
|
|
|
return $jwt;
|
|
}
|
|
|
|
|
|
// fetch result from jilo agent API
|
|
public function fetchAgent($agent_id, $force = false) {
|
|
|
|
// we need agent details for URL and JWT token
|
|
$agentDetails = $this->getAgentIDDetails($agent_id);
|
|
|
|
// Safe exit in case the agent is not found
|
|
if (empty($agentDetails)) {
|
|
return json_encode(['error' => 'Agent not found']);
|
|
}
|
|
|
|
$agent = $agentDetails[0];
|
|
$agent_cache_name = 'agent' . $agent_id . '_cache';
|
|
$agent_cache_time = 'agent' . $agent_id . '_time';
|
|
|
|
// check if the cache is still valid, unless force-refresh is requested
|
|
if (!$force && $this->checkAgentCache($agent_id)) {
|
|
return $_SESSION[$agent_cache_name];
|
|
}
|
|
|
|
// generate the JWT token
|
|
$payload = [
|
|
'agent_id' => $agent_id,
|
|
'timestamp' => time()
|
|
];
|
|
$jwt = $this->generateAgentToken($payload, $agent['secret_key']);
|
|
|
|
// Make the API request
|
|
$ch = curl_init();
|
|
curl_setopt($ch, CURLOPT_URL, $agent['url'] . $agent['agent_endpoint']);
|
|
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
|
|
curl_setopt($ch, CURLOPT_TIMEOUT, 10); // timeout 10 seconds
|
|
curl_setopt($ch, CURLOPT_HTTPHEADER, [
|
|
'Authorization: Bearer ' . $jwt,
|
|
'Content-Type: application/json'
|
|
]);
|
|
|
|
$response = curl_exec($ch);
|
|
$curl_error = curl_error($ch);
|
|
$curl_errno = curl_errno($ch);
|
|
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
|
|
|
|
curl_close($ch);
|
|
|
|
// curl error
|
|
if ($curl_errno) {
|
|
return json_encode(['error' => 'curl error: ' . $curl_error]);
|
|
}
|
|
|
|
// response is not 200 OK
|
|
if ($http_code !== 200) {
|
|
return json_encode(['error' => 'HTTP error: ' . $http_code]);
|
|
}
|
|
|
|
// other custom error(s)
|
|
if (strpos($response, 'Auth header not received') !== false) {
|
|
return json_encode(['error' => 'Auth header not received']);
|
|
}
|
|
|
|
// Cache the result and the timestamp if the response is successful
|
|
// We decode it so that it's pure JSON and not escaped
|
|
$_SESSION[$agent_cache_name] = json_decode($response, true);
|
|
$_SESSION[$agent_cache_time] = time();
|
|
|
|
return $response;
|
|
}
|
|
|
|
|
|
// clear agent cache
|
|
public function clearAgentCache($agent_id) {
|
|
$_SESSION["agent{$agent_id}_cache"] = '';
|
|
$_SESSION["agent{$agent_id}_cache_time"] = '';
|
|
}
|
|
|
|
|
|
// get latest stored jilo agents data
|
|
public function getLatestData($platform_id, $agent_type, $metric_type) {
|
|
// retrieves data already stored in db from another function (or the jilo-server to-be)
|
|
}
|
|
|
|
}
|
|
|
|
?>
|