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Update documentation

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This commit is contained in:
Bryan Roe
2022-10-06 15:43:06 -07:00
parent 705aac16ad
commit 0a1fa58d4d
2 changed files with 71 additions and 1 deletions
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29
modules/util-agentlog.js
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@@ -15,11 +15,21 @@ limitations under the License.
*/
//
// This is a helper module for parsing and enumerating Mesh Agent log entries
//
//
// This function parses a log entry, and and pushes each parsed log entry into the results array
//
function parseLine(entry)
{
// Use a regex to parse the log entry
var test = entry.match(/^\[.*M\]/);
if (test == null)
{
// Use a regex to find a windows crash entry
test = entry.match(/\[.+ => .+:[0-9]+\]/);
if (test != null)
{
@@ -34,6 +44,7 @@ function parseLine(entry)
}
else
{
// On linux, use a regex to determine if a crash entry contains symbol info
test = entry.match(/^[\.\/].+\(\) \[0x[0-9a-fA-F]+\]$/);
if (test != null)
{
@@ -47,6 +58,7 @@ function parseLine(entry)
}
else
{
// use a regex to try to finx the CrashID on linux
test = entry.match(/^\[.+_[0-9a-fA-F]{16}\]$/);
if(test!=null)
{
@@ -56,6 +68,7 @@ function parseLine(entry)
}
}
// Use a regex to find the crash entry
test = entry.match(/(?!^=>)\/+.+:[0-9]+$/);
if(test!=null)
{
@@ -69,11 +82,13 @@ function parseLine(entry)
}
test = test[0];
// Parse out the timestamp
var dd = test.substring(1, test.length -1);
var c = dd.split(' ');
var t = c[1].split(':');
if (c[2] == 'PM') { t[0] = parseInt(t[0]) + 12; if (t[0] == 24) { t[0] = 0; } }
// Parse out the message and the agent hash
var d = Date.parse(c[0] + 'T' + t.join(':'));
var msg = entry.substring(test.length).trim();
var hash = msg.match(/^\[[0-9a-fA-F]{16}\]/);
@@ -107,6 +122,10 @@ function parseLine(entry)
this.results.push(log);
}
//
// This function will accumulate a raw data read from the file system, and attempt
// to parse the entries line by line
//
function readLog_data(buffer)
{
var lines = buffer.toString();
@@ -130,6 +149,10 @@ function readLog_data(buffer)
}
}
//
// This function will attempt to read the Mesh Agent log specified by 'path'
// and return an array of log entries
//
function readLogEx(path)
{
var ret = [];
@@ -138,7 +161,7 @@ function readLogEx(path)
var s = require('fs').createReadStream(path);
s.buffered = null;
s.results = ret;
s.on('data', readLog_data);
s.on('data', readLog_data);
s.resume();
if (s.buffered != null) { readLog_data.call(s, s.buffered); s.buffered = null; }
s.removeAllListeners('data');
@@ -151,6 +174,10 @@ function readLogEx(path)
return (ret);
}
//
// This function will attempt to read the Mesh Agent log specified by 'path'
// and return an array of log entries. 'criteria' can be the number of log entries to fetch, or a timestamp of the oldest entry to fetch
//
function readLog(criteria, path)
{
var objects = readLogEx(path == null ? (process.execPath.split('.exe').join('') + '.log') : path);