57 lines
1.9 KiB
JavaScript
57 lines
1.9 KiB
JavaScript
const cds = require ('@sap/cds')
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const LOG = cds.log('cds.log')
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module.exports = class LogService extends cds.Service {
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init(){
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this.on('GET','Loggers', (req)=>{
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let loggers = Object.values(cds.log.loggers).map (_logger)
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let {$search} = req._.req.query
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if ($search) {
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const re = RegExp($search,'i')
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loggers = loggers.filter (l => re.test(l.id) || re.test(l.level))
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}
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return loggers.sort ((a,b) => a.id < b.id ? -1 : 1)
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})
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this.on('PUT','Logger', (req)=>{
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const {id} = req.params[0] || req.data
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if (!id) return req.reject('No logger id specified in request')
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return _logger (cds.log (id, req.data))
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})
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this.on('debug', (req)=>{
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const {logger:id} = req.params[0] || req.data
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if (!id) return req.reject('No logger id specified in request')
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return _logger (cds.log (id, {level:'debug'}))
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})
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this.on('reset', (req)=>{
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const {logger:id} = req.params[0] || req.data
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if (!id) return req.reject('No logger id specified in request')
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return _logger (cds.log (id, {level:'info'}))
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})
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this.on('format', (req)=>{
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const $ = req.data; LOG.info('format:',$)
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// Set format for new loggers constructed subsequently
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cds.log.format = (id, level, ...args) => {
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const fmt = []
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if ($.timestamp) fmt.push ('|', (new Date).toISOString())
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if ($.level) fmt.push ('|', _levels[level].padEnd(5))
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if ($.tenant) fmt.push ('|', cds.context && cds.context.tenant)
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if ($.reqid) fmt.push ('|', cds.context && cds.context.id)
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if ($.id) fmt.push ('|', id)
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fmt[0] = '[', fmt.push ('] -', ...args)
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return fmt
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}
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// Apply this format to all existing loggers
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Object.values(cds.log.loggers).forEach (l => l.setFormat (cds.log.format))
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})
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}
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}
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const _logger = ({id,level}) => ({id, level:_levels[level] })
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const _levels = [ 'SILENT', 'ERROR', 'WARN', 'INFO', 'DEBUG', 'TRACE' ]
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