RRD API response to image

N

naja7host

Member
May 15, 2009
78
1
6
Helo i'm writing a script based in the API . all well done, the only probleme i have is how to convert the response data of rrd to image (png)


in response i have array

filname -> /var/......./xxx.png
image -> xqsd sdbfsd fs (some trange caractere)

i have tried

HTML: 
<img scr="'.$response[image].'.png" alt="cpu chart" *>

but not working .what is the correct format ?
 
naja7host said:
Helo i'm writing a script based in the API . all well done, the only probleme i have is how to convert the response data of rrd to image (png)


in response i have array

filname -> /var/......./xxx.png
image -> xqsd sdbfsd fs (some trange caractere)

i have tried

HTML: 
<img scr="'.$response[image].'.png" alt="cpu chart" *>

but not working .what is the correct format ?
Click to expand...

GET /api2/png/nodes/{node}/qemu/{vmid}/rrd
 
but my code return this

RESPONSE ARRAY:
Code: 
Array
(
    [data] => Array
        (
            [filename] => /var/lib/rrdcached/db/pve2-vm/119_cpu.png
            [image] => ‰PNG

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        )

)

END RESPONSE ARRAY.

now how i can put it or convert it to images ?

i have tried

<img border="0" title="Disk Usage" alt="" src="'.$response['image'].'" />

and

<img border="0" title="Disk Usage" alt="" src="data:image/png;base64,'.$response['image'].'" />

but i can't get it working . i have missed some tips ?
 
Last edited:
dietmar said:
No, the API return the png file when called as suggested.
Click to expand...

but how i can include it in the IMG tag ;

<img border="0" title="Disk Usage" alt="" src="'.$response['filename'].'" /> ----> not working

<img border="0" title="Disk Usage" alt="" src="'.$response['image'].'.png" /> ----> not working
 
naja7host said:
but how i can include it in the IMG tag ;

<img border="0" title="Disk Usage" alt="" src="'.$response['filename'].'" /> ----> not working

<img border="0" title="Disk Usage" alt="" src="'.$response['image'].'.png" /> ----> not working
Click to expand...




<img border="0" title="Disk Usage" alt="" src="https://node:8006/api2/png/nodes/{node}/qemu/{vmid}/rrd...." /> -

or

<img border="0" title="Disk Usage" alt="" src="script.php" />

and if your script, you need to return the binary file with correct mime type
 
i'm using the API . i have the api response as shown in my post-4 .

so i have this code but not working .

<img src="data:image/png;base64,'.base64_encode($response['image']).'" />
 
naja7host said:
i'm using the API . i have the api response as shown in my post-4 .

so i have this code but not working .

<img src="data:image/png;base64,'.base64_encode($response['image']).'" />
Click to expand...

indeed, embedding with base64 should also work.

But I'm not sure your need ' character.

you can try to generate a sample with this website http://webcodertools.com/imagetobase64converter
 
spirit said:
indeed, embedding with base64 should also work.

But I'm not sure your need ' character.

you can try to generate a sample with this website http://webcodertools.com/imagetobase64converter
Click to expand...

this is very strange , this is the full code , but not working

PHP: 
<?php
require("pve2_api.class.php");
$pve2 = new PVE2_API("xxxxxx.com", "apiuser", "pve", "apipassword");
if ($pve2->constructor_success()) {
    /* Optional - enable debugging. It print()'s any results currently */
    // $pve2->set_debug(true);
    if ($pve2->login()) {
        $node_name = $pve2->get_node_list();
        $first_node = $node_name[0];        
        unset($node_name);        
        $response = $pve2->get("/nodes/".$first_node."/openvz/119/rrd?ds=cpu&timeframe=hour&cf=AVERAGE&_dc=2");
        echo '<img src="data:image/png;base64,'.base64_encode($response['image']).'" />' ;
    } else {
        print("Login to Proxmox Host failed.\n");
        exit;
    }
} else {
    print("Could not create PVE2_API object.\n");
    exit;
}

?>
 
Hi naja7host,

I asked that on the mailing list as I have the same problem and I got the answer.

using the function above, you get an utf8 encoded string.

the treatment in php is with utf8_decode()

best
 
<img src="data:image/png;base64,<? echo base64_encode(utf8_decode($vpsCls->metrics->data->image));?>" />
 
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