topic Re: run linux system command from rule in Alfresco Archive

run linux system command from rule

stegbth — Wed, 18 Nov 2015 10:56:10 GMT

Hi,when a user uploads a jpeg, this should get resized to 1024x768 to save space.On the fileserver this was done with imagemagick, like "find pictures/ -type -f -iname '*.jpg' -exec mogrify -verbose -resize 1024x768 {} \;What's is the simpliest way to resize the picture within alfresco Share?I found

Re: run linux system command from rule

hello_wrold — Wed, 18 Nov 2015 11:45:00 GMT

I would set up a folder rule that executes a tiny (javascript-)script each time a new image is uploaded. Alfresco has a built-in transformation service that can do all the resizing. The code would be something like


document.transformImage("image/jpeg", "-resize 1024x768");
document.save();
‍‍‍‍

where 'document' is the special variable that points to the document the folder rule is currently working with. There is an example at


https://wiki.alfresco.com/wiki/JavaScript_API_Cookbook#Create_Document_and_Transform_it
‍‍‍

HTH

Re: run linux system command from rule

stegbth — Wed, 18 Nov 2015 12:05:00 GMT

Hi HTH,

thank you very much for your answer.
when i check the preexisting script "append_copyright.js"
this consist only of


if (document.hasPermission("Write"))
{
   if (document.mimetype == "text/plain")
   {
      document.content += "\r\n\r\nCopyright (C) 2006";
   }
   else if (document.mimetype == "text/html")
   {
      document.content += "<br><br><small>Copyright &copy; 2006</small>";
   }
}
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so is your code not enough?

It's not enough, i tested, it, but i don't understand why.

best regards
Thomas

Re: run linux system command from rule

stegbth — Wed, 18 Nov 2015 14:35:49 GMT

Hi Hth,

i found https://forums.alfresco.com/forum/developer-discussions/alfresco-explorer-development/overwrite-files-scripts-08012008-1547
There is nearly exactly the js i need. it transformes and create.
only the delete at the end is uncommented.

i will test this script, thank you very much

best regards
Thomas

Re: run linux system command from rule

stegbth — Thu, 19 Nov 2015 00:38:59 GMT

Hi,

i am having some difficulties to understand the script from https://forums.alfresco.com/forum/developer-discussions/alfresco-explorer-development/overwrite-files-scripts-08012008-1547

It is running, but leave at the end: picture.jpg AND resized_picture.jpg.
When add document.remove() i get at the end
resized_resized_resized_resized_resized….picture.jpg.

as the rule is "connected" to the folder the script get started over and over, right?
So best solution would be to check document.properties.name if it starts with resized_, right?

best regards
Thomas

Re: run linux system command from rule

hello_wrold — Thu, 19 Nov 2015 11:38:35 GMT

I run the script, but that recursion you describe could due to your folder rule. If you set up the rule firing on 'new or modified content' the rule is going to fire on the temporary file.

By the way: if you're tinkering with java script in Alfresco, I highly recommend installing the JavaScript console from add-ons.

Re: run linux system command from rule

stegbth — Thu, 19 Nov 2015 22:57:10 GMT

Hi Hth,

yes, the rule is setup to fire on new or modified content.
When should the rule else get fired?
So best solution would be to check the if the filename starts with resized_ and exit the script, right?

best regards
Thomas

Re: run linux system command from rule

stegbth — Sun, 22 Nov 2015 18:40:28 GMT

Hi HTH,

when should the rule else fired?

how can i check, if the content of the variable strOrigName starts not with resized_ ?

best regards
Thomas

Re: run linux system command from rule

stegbth — Thu, 10 Dec 2015 15:15:20 GMT

Hi,

i modified the script like this:


var strOrigName = document.properties.name;
if (!strOrigName.startsWith('resized')){
 var tmpName = "resized_" + document.properties.name;
 document.properties.name = tmpName;
 var rImage=document.transformImage("image/jpeg","-normalize -resize 1024x768", document.parent);
 if (rImage){
  document.properties.name = strOrigName;
  document.save();
  document.remove();
 }
}
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but with this script nothing happens. Is the first "if (!strOrigName … )' correct?

greetz
Thomas