3 ms·

If you do end up playing with this, take a look at node.js and socket.io. Here is the relevant part for tailing a file over ssh: var tail = spawn('ssh', ['use

by zackham 16y ago

If you do end up playing with this, take a look at node.js and socket.io. Here is the relevant part for tailing a file over ssh: var tail = spawn('ssh', ['user@yourserver.com', 'tail', '-f', '/path/to/some.log']); tail.stdout.addListener('data', function (data) { listener.broadcast(data.toString()); }); I did a really simple version of what you're talking about with some client-side parsing of rails logs for fun. Feel free to contact me and I'll be happy to zip up the source and send it your way.

Keyframe 16y ago
hah, wow - thanks for the effort. Actually, I haven't been very descriptive. I have some apps here and there that take a certain time to execute (often in minutes) running on server. I wanted an easy way to monitor their progress from a web interface without any (or too much) modifications to original code. So what I did now is that basically I've made a 'forever frame' in my html which points to a URI where app resides. That app now outputs multipart/x-mixed-replace MIME which is then loaded into an iframe in my html and JS copied when onLoad happens to a styled div. I've made a small proof of concept here: - here is a straight sample output (in this case a dummy php): http://www.vga.hr/console_test/count.php http://www.vga.hr/console_test/count.php since this is a multipart/x-mixed-replace, I can blurt out a html (as 'Start' is) and plain afterwards. - here is a simple client html: http://www.vga.hr/console_test/con_out.html http://www.vga.hr/console_test/con_out.html - and another one which concatenates: http://www.vga.hr/console_test/con_out_plus.html http://www.vga.hr/console_test/con_out_plus.html so my idea was basically to output text/html <script> out when I need to issue commands to a reader (for commands like overwrite mode, concatenate mode, highlight, clear, flash... whatever - basically a state machine) and text/plain for actual messages being shown. I wish I could get rid of 'loading' status in browser while doing a long poll as primitive as I am now (forever frame). tl;dr; should be on a client side only with x-mixed-replace on server. Thanks again.

by zackham 16y ago

Keyframe 16y ago

hah, wow - thanks for the effort. Actually, I haven't been very descriptive. I have some apps here and there that take a certain time to execute (often in minutes) running on server. I wanted an easy way to monitor their progress from a web interface without any (or too much) modifications to original code. So what I did now is that basically I've made a 'forever frame' in my html which points to a URI where app resides. That app now outputs multipart/x-mixed-replace MIME which is then loaded into an iframe in my html and JS copied when onLoad happens to a styled div. I've made a small proof of concept here: - here is a straight sample output (in this case a dummy php): http://www.vga.hr/console_test/count.php http://www.vga.hr/console_test/count.php since this is a multipart/x-mixed-replace, I can blurt out a html (as 'Start' is) and plain afterwards. - here is a simple client html: http://www.vga.hr/console_test/con_out.html http://www.vga.hr/console_test/con_out.html - and another one which concatenates: http://www.vga.hr/console_test/con_out_plus.html http://www.vga.hr/console_test/con_out_plus.html so my idea was basically to output text/html <script> out when I need to issue commands to a reader (for commands like overwrite mode, concatenate mode, highlight, clear, flash... whatever - basically a state machine) and text/plain for actual messages being shown. I wish I could get rid of 'loading' status in browser while doing a long poll as primitive as I am now (forever frame). tl;dr; should be on a client side only with x-mixed-replace on server. Thanks again.