log-vista
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LogVista Agent - Lightweight system monitoring and log collection for any project/language
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<title>Code coverage report for src/index.js</title>
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<h1><a href="../index.html">All files</a> / <a href="index.html">src</a> index.js</h1>
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<span class="strong">0% </span>
<span class="quiet">Statements</span>
<span class='fraction'>0/128</span>
</div>
<div class='fl pad1y space-right2'>
<span class="strong">0% </span>
<span class="quiet">Branches</span>
<span class='fraction'>0/51</span>
</div>
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<span class="strong">0% </span>
<span class="quiet">Functions</span>
<span class='fraction'>0/23</span>
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<span class="strong">0% </span>
<span class="quiet">Lines</span>
<span class='fraction'>0/119</span>
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Press <em>n</em> or <em>j</em> to go to the next uncovered block, <em>b</em>, <em>p</em> or <em>k</em> for the previous block.
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<pre><table class="coverage">
<tr><td class="line-count quiet"><a name='L1'></a><a href='#L1'>1</a>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">const fs = <span class="cstat-no" title="statement not covered" >require('fs').promises;</span>
const path = <span class="cstat-no" title="statement not covered" >require('path');</span>
const logger = <span class="cstat-no" title="statement not covered" >require('./logger');</span>
const MetricsCollector = <span class="cstat-no" title="statement not covered" >require('./metricsCollector');</span>
const LogCollector = <span class="cstat-no" title="statement not covered" >require('./logCollector');</span>
const Uploader = <span class="cstat-no" title="statement not covered" >require('./uploader');</span>
const Scheduler = <span class="cstat-no" title="statement not covered" >require('./scheduler');</span>
class LogVistaAgent {
<span class="fstat-no" title="function not covered" > co</span>nstructor() {
<span class="cstat-no" title="statement not covered" > this.config = null;</span>
<span class="cstat-no" title="statement not covered" > this.metricsCollector = null;</span>
<span class="cstat-no" title="statement not covered" > this.logCollector = null;</span>
<span class="cstat-no" title="statement not covered" > this.uploader = null;</span>
<span class="cstat-no" title="statement not covered" > this.scheduler = null;</span>
<span class="cstat-no" title="statement not covered" > this.isRunning = false;</span>
}
<span class="fstat-no" title="function not covered" > as</span>ync init() {
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > logger.info('Initializing LogVista Agent...');</span>
// Load configuration
<span class="cstat-no" title="statement not covered" > await this.loadConfig();</span>
// Initialize components
<span class="cstat-no" title="statement not covered" > this.metricsCollector = new MetricsCollector();</span>
<span class="cstat-no" title="statement not covered" > this.logCollector = new LogCollector();</span>
<span class="cstat-no" title="statement not covered" > this.uploader = new Uploader(this.config);</span>
<span class="cstat-no" title="statement not covered" > this.scheduler = new Scheduler(</span>
this.metricsCollector,
this.logCollector,
this.uploader,
this.config
);
// Test connection to central system
const connected = <span class="cstat-no" title="statement not covered" >await this.uploader.testConnection();</span>
<span class="cstat-no" title="statement not covered" > if (!connected) {</span>
<span class="cstat-no" title="statement not covered" > logger.warn('Unable to connect to central system. Agent will continue and retry periodically.');</span>
}
<span class="cstat-no" title="statement not covered" > logger.info('LogVista Agent initialized successfully');</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Failed to initialize LogVista Agent:', error);</span>
<span class="cstat-no" title="statement not covered" > throw error;</span>
}
}
<span class="fstat-no" title="function not covered" > as</span>ync loadConfig() {
<span class="cstat-no" title="statement not covered" > try {</span>
let configPath;
// Priority order for config files:
// 1. Environment variable (set by CLI)
// 2. Local project .logvista/config.json
// 3. Legacy config/agent.config.json
// 4. Global config
<span class="cstat-no" title="statement not covered" > if (process.env.LOGVISTA_CONFIG_PATH) {</span>
<span class="cstat-no" title="statement not covered" > configPath = process.env.LOGVISTA_CONFIG_PATH;</span>
} else {
const localConfigPath = <span class="cstat-no" title="statement not covered" >path.join(process.cwd(), '.logvista', 'config.json');</span>
const legacyConfigPath = <span class="cstat-no" title="statement not covered" >path.join(__dirname, '../config/agent.config.json');</span>
const os = <span class="cstat-no" title="statement not covered" >require('os');</span>
const globalConfigPath = <span class="cstat-no" title="statement not covered" >path.join(</span>
os.platform() === 'win32'
? path.join(os.homedir(), 'AppData', 'Roaming', 'LogVista')
: path.join(os.homedir(), '.logvista'),
'agent.config.json'
);
<span class="cstat-no" title="statement not covered" > if (await fs.access(localConfigPath).then(<span class="fstat-no" title="function not covered" >()</span> => <span class="cstat-no" title="statement not covered" >true)</span>.catch(<span class="fstat-no" title="function not covered" >()</span> => <span class="cstat-no" title="statement not covered" >false)</span>) {</span>
<span class="cstat-no" title="statement not covered" > configPath = localConfigPath;</span>
} else <span class="cstat-no" title="statement not covered" >if (await fs.access(legacyConfigPath).then(<span class="fstat-no" title="function not covered" >()</span> => <span class="cstat-no" title="statement not covered" >true)</span>.catch(<span class="fstat-no" title="function not covered" >()</span> => <span class="cstat-no" title="statement not covered" >false)</span>) {</span>
<span class="cstat-no" title="statement not covered" > configPath = legacyConfigPath;</span>
} else <span class="cstat-no" title="statement not covered" >if (await fs.access(globalConfigPath).then(<span class="fstat-no" title="function not covered" >()</span> => <span class="cstat-no" title="statement not covered" >true)</span>.catch(<span class="fstat-no" title="function not covered" >()</span> => <span class="cstat-no" title="statement not covered" >false)</span>) {</span>
<span class="cstat-no" title="statement not covered" > configPath = globalConfigPath;</span>
} else {
<span class="cstat-no" title="statement not covered" > throw new Error('No configuration file found. Run "logvista init" to create one.');</span>
}
}
<span class="cstat-no" title="statement not covered" > logger.info(`Loading configuration from: ${configPath}`);</span>
const configContent = <span class="cstat-no" title="statement not covered" >await fs.readFile(configPath, 'utf8');</span>
<span class="cstat-no" title="statement not covered" > this.config = JSON.parse(configContent);</span>
// Validate required configuration
<span class="cstat-no" title="statement not covered" > this.validateConfig();</span>
<span class="cstat-no" title="statement not covered" > logger.info('Configuration loaded successfully');</span>
<span class="cstat-no" title="statement not covered" > logger.debug('Config:', { </span>
projects: this.config.projects.length,
interval: this.config.collection?.interval || this.config.agent?.collection_interval || 30,
centralUrl: this.config.central_system.url
});
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Failed to load configuration:', error);</span>
<span class="cstat-no" title="statement not covered" > throw new Error(`Configuration error: ${error.message}`);</span>
}
}
<span class="fstat-no" title="function not covered" > va</span>lidateConfig() {
// Flexible validation for both old and new config formats
const required = <span class="cstat-no" title="statement not covered" >['central_system', 'projects'];</span>
<span class="cstat-no" title="statement not covered" > for (const field of required) {</span>
<span class="cstat-no" title="statement not covered" > if (!this.config[field]) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error(`Missing required configuration: ${field}`);</span>
}
}
<span class="cstat-no" title="statement not covered" > if (!this.config.central_system.url) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error('Missing central_system.url in configuration');</span>
}
<span class="cstat-no" title="statement not covered" > if (!this.config.central_system.token) {</span>
<span class="cstat-no" title="statement not covered" > logger.warn('Missing central_system.token in configuration - you may need to set this');</span>
}
// Ensure collection config exists (support both old and new format)
<span class="cstat-no" title="statement not covered" > if (!this.config.collection && !this.config.agent) {</span>
<span class="cstat-no" title="statement not covered" > this.config.collection = {</span>
interval: 30,
batch_size: 100,
retry_attempts: 3,
retry_delay: 5000
};
}
<span class="cstat-no" title="statement not covered" > if (!Array.isArray(this.config.projects) || this.config.projects.length === 0) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error('At least one project must be configured');</span>
}
// Validate each project
<span class="cstat-no" title="statement not covered" > for (const project of this.config.projects) {</span>
<span class="cstat-no" title="statement not covered" > if (!project.project_name) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error('Missing project_name in project configuration');</span>
}
<span class="cstat-no" title="statement not covered" > if (!project.pwd_path) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error('Missing pwd_path in project configuration');</span>
}
}
}
<span class="fstat-no" title="function not covered" > as</span>ync start() {
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > if (this.isRunning) {</span>
<span class="cstat-no" title="statement not covered" > logger.warn('Agent is already running');</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
<span class="cstat-no" title="statement not covered" > logger.info('Starting LogVista Agent...');</span>
// Start log watching
<span class="cstat-no" title="statement not covered" > await this.logCollector.startWatching(this.config.projects);</span>
// Start scheduler
<span class="cstat-no" title="statement not covered" > this.scheduler.start();</span>
<span class="cstat-no" title="statement not covered" > this.isRunning = true;</span>
<span class="cstat-no" title="statement not covered" > logger.info('LogVista Agent started successfully');</span>
// Log agent status
<span class="cstat-no" title="statement not covered" > this.logStatus();</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Failed to start LogVista Agent:', error);</span>
<span class="cstat-no" title="statement not covered" > throw error;</span>
}
}
<span class="fstat-no" title="function not covered" > as</span>ync stop() {
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > if (!this.isRunning) {</span>
<span class="cstat-no" title="statement not covered" > logger.warn('Agent is not running');</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
<span class="cstat-no" title="statement not covered" > logger.info('Stopping LogVista Agent...');</span>
// Stop scheduler
<span class="cstat-no" title="statement not covered" > if (this.scheduler) {</span>
<span class="cstat-no" title="statement not covered" > this.scheduler.stop();</span>
}
// Stop log watching
<span class="cstat-no" title="statement not covered" > if (this.logCollector) {</span>
<span class="cstat-no" title="statement not covered" > this.logCollector.stopWatching();</span>
}
<span class="cstat-no" title="statement not covered" > this.isRunning = false;</span>
<span class="cstat-no" title="statement not covered" > logger.info('LogVista Agent stopped successfully');</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Error stopping LogVista Agent:', error);</span>
<span class="cstat-no" title="statement not covered" > throw error;</span>
}
}
<span class="fstat-no" title="function not covered" > lo</span>gStatus() {
const status = <span class="cstat-no" title="statement not covered" >{</span>
isRunning: this.isRunning,
scheduler: this.scheduler ? this.scheduler.getStatus() : null,
projects: this.config.projects.filter(<span class="fstat-no" title="function not covered" >p </span>=> <span class="cstat-no" title="statement not covered" >p.enabled)</span>.map(<span class="fstat-no" title="function not covered" >p </span>=> (<span class="cstat-no" title="statement not covered" >{</span>
name: p.project_name,
path: p.pwd_path,
logPaths: p.custom_log_paths?.length || 0
})),
config: {
collectionInterval: this.config.agent.collection_interval,
batchSize: this.config.agent.batch_size,
centralUrl: this.config.central_system.url
}
};
<span class="cstat-no" title="statement not covered" > logger.info('Agent Status:', status);</span>
}
<span class="fstat-no" title="function not covered" > as</span>ync getStatus() {
<span class="cstat-no" title="statement not covered" > return {</span>
isRunning: this.isRunning,
scheduler: this.scheduler ? this.scheduler.getStatus() : null,
projects: this.config?.projects?.filter(<span class="fstat-no" title="function not covered" >p </span>=> <span class="cstat-no" title="statement not covered" >p.enabled)</span> || [],
uptime: process.uptime(),
memory: process.memoryUsage(),
version: require('../package.json').version
};
}
}
// Main execution
async function <span class="fstat-no" title="function not covered" >main(</span>) {
const agent = <span class="cstat-no" title="statement not covered" >new LogVistaAgent();</span>
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > await agent.init();</span>
<span class="cstat-no" title="statement not covered" > await agent.start();</span>
// Graceful shutdown handlers
const gracefulShutdown = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >as</span>ync (signal) => {</span>
<span class="cstat-no" title="statement not covered" > logger.info(`Received ${signal}, shutting down gracefully...`);</span>
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > await agent.stop();</span>
<span class="cstat-no" title="statement not covered" > process.exit(0);</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Error during shutdown:', error);</span>
<span class="cstat-no" title="statement not covered" > process.exit(1);</span>
}
};
<span class="cstat-no" title="statement not covered" > process.on('SIGINT', <span class="fstat-no" title="function not covered" >()</span> => <span class="cstat-no" title="statement not covered" >gracefulShutdown('SIGINT'))</span>;</span>
<span class="cstat-no" title="statement not covered" > process.on('SIGTERM', <span class="fstat-no" title="function not covered" >()</span> => <span class="cstat-no" title="statement not covered" >gracefulShutdown('SIGTERM'))</span>;</span>
// Handle uncaught exceptions
<span class="cstat-no" title="statement not covered" > process.on('uncaughtException', <span class="fstat-no" title="function not covered" >(e</span>rror) => {</span>
<span class="cstat-no" title="statement not covered" > logger.error('Uncaught Exception:', error);</span>
<span class="cstat-no" title="statement not covered" > gracefulShutdown('uncaughtException');</span>
});
<span class="cstat-no" title="statement not covered" > process.on('unhandledRejection', <span class="fstat-no" title="function not covered" >(r</span>eason, promise) => {</span>
<span class="cstat-no" title="statement not covered" > logger.error('Unhandled Rejection at:', promise, 'reason:', reason);</span>
<span class="cstat-no" title="statement not covered" > gracefulShutdown('unhandledRejection');</span>
});
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Failed to start agent:', error);</span>
<span class="cstat-no" title="statement not covered" > process.exit(1);</span>
}
}
// Export for potential use as module
<span class="cstat-no" title="statement not covered" >module.exports = LogVistaAgent;</span>
// Run if this file is executed directly
<span class="cstat-no" title="statement not covered" >if (require.main === module) {</span>
<span class="cstat-no" title="statement not covered" > main();</span>
}
</pre></td></tr></table></pre>
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