I am facing issue when deploying trigger with salesforce rest api


I am calling the rest api from Apex class. We are creating triggers dynamically and want to deploy it to org with test class. For that we created a folder and kept “classes” and “triggers” folder under that. Then kept package.xml in it. Now creating zip files using Zippex.

Now calling the rest api to deploy trigger. My methods are as below:-

This method is getting code for trigger, test class, package.xml and then zipping it.

public static String triggerDeployment(String triggerName, String apexTriggerCode, String testClassName, String testClassCode){
            String triggerMetadata = getTriggerCodeMetadata();
    String triggercode = apexTriggerCode;//getTriggerCode();
    String triggerTestClassMetadata = getTriggerTestCodeMetadata();
    String triggerTestClassCode = testClassCode;//getTriggerTestCode()
    String packageString = getPackageXML(triggerName,testClassName);      
    Zippex sampleZip = new Zippex();
    Blob triggerMetadataBlob = Blob.valueOf(triggerMetadata);
    sampleZip.addFile('triggers/' + triggerName+'.trigger-meta.xml', triggerMetadataBlob, null);
    Blob triggercodeBlob = Blob.valueOf(triggercode);
    sampleZip.addFile('triggers/' + triggerName+'.trigger', triggercodeBlob, null);
    Blob triggerTestClassMetadataBlob = Blob.valueOf(triggerTestClassMetadata);
    sampleZip.addFile('classes/' + testClassName+'.cls-meta.xml', triggerTestClassMetadataBlob, null);
    Blob triggerTestClassCodeBlob = Blob.valueOf(triggerTestClassCode);
    sampleZip.addFile('classes/' +testClassName+'.cls', triggerTestClassCodeBlob, null);       
    Blob packageStringBlob = Blob.valueOf(packageString);
    sampleZip.addFile('package.xml', packageStringBlob, null);
    System.debug('sampleZip  --->>>' + sampleZip);
    Blob zipData = sampleZip.getZipArchive();                
    String zipEncoded = EncodingUtil.base64Encode(zipData);         
    String res = deployZipByRest(zipEncoded, testClassName); 
    return res;

The method named “deployZipByRest” is called from this method.

In this method I have written code to deploy a class using rest api.

public static String deployZipByRest(String bodyEncoded, String testClassName){        
    String crlf = '\n';
    String boundary = '--------------------------BOUNDARY';
    String endPoint = System.URL.getOrgDomainUrl().toExternalForm() + '/services/data/v48.0/metadata/deployRequest';
    System.debug('endPoint ==>:'+ endPoint);

    Map<String, Boolean> deployOptions = new Map<String, Boolean>();
    deployOptions.put('rollbackOnError', false);
    deployOptions.put('singlePackage', true);

    String deploymentOptions =  '{"deployOptions" :{"allowMissingFiles" : false,"autoUpdatePackage" : false,"checkOnly" : false,"ignoreWarnings" : false, "performRetrieve" : false,"purgeOnDelete" : false,"rollbackOnError" : false,"runTests" : ["'+ testClassName +'"], "singlePackage" : false,"testLevel" : "RunSpecifiedTests"}}';
    Blob bodyPayLoad = getBinaryPostBody(crlf, boundary, deploymentOptions, bodyEncoded);

        return '';

    HttpRequest req = new HttpRequest();    
    req.setHeader('Authorization','Bearer '+ UserInfo.getSessionID());
    req.setHeader('Content-Type', 'multipart/form-data; boundary='+boundary);
    System.debug('body blob size ==>:'+ req.getBodyAsBlob().size());
    req.setHeader('Content-Length', String.valueof(req.getBodyAsBlob().size()));        
    Http http = new Http();
    HttpResponse res = http.send(req);
    System.debug('status code ==>:'+ res.getStatusCode());
    System.debug('response body ==>:'+ res.getBody());

    String response = res.getBody();
    return response;

public static Blob getBinaryPostBody(String crlf, String boundary, String deploymentOptions, String bodyEncoded) {
    String header = '--' + boundary + crlf
            + 'Content-Disposition: form-data; name="json"' + crlf
            + 'Content-Type: application/json;'  + crlf + crlf
            + deploymentOptions + crlf
            +'--' + boundary + crlf
            + 'Content-Disposition: form-data; name="file";filename="deploy.zip"' + crlf
            + 'Content-Type: application/zip;' + crlf + crlf;

    String footer = + crlf + '--' + boundary + '--';
    String headerEncoded = EncodingUtil.base64Encode(Blob.valueOf(header));
        header += ' ';
        headerEncoded = EncodingUtil.base64Encode(Blob.valueOf(header));

    String footerEncoded = EncodingUtil.base64Encode(Blob.valueOf(footer));

    Blob bodyBlob = null;
    //last encoded body bytes
    String last4Bytes = bodyEncoded.substring(bodyEncoded.length() - 4, bodyEncoded.length());
    //if the last 4 bytes encoded base64 ends with the padding character (= or ==) then re-encode those bytes with the footer
    //to ensure the padding is added only at the end of the body
        Blob decoded4Bytes = EncodingUtil.base64Decode(last4Bytes);
        HttpRequest tmp = new HttpRequest();
        String last4BytesFooter = tmp.getBody() + footer;  
        bodyBlob = EncodingUtil.base64Decode(headerEncoded + bodyEncoded.substring(0, bodyEncoded.length() - 4) + EncodingUtil.base64Encode(Blob.valueOf(last4BytesFooter)));
        bodyBlob = EncodingUtil.base64Decode(headerEncoded + bodyEncoded + footerEncoded);

    return bodyBlob;


What is happening here is.. Our deployment status in org is showing successful. But no element is deployed. Means class is not deployed.

I have followed the following links to work on it.

Deploy sfdc doc https://developer.salesforce.com/docs/atlas.en-us.api_meta.meta/api_meta/meta_rest_deploy.htm

Nerd@work article https://blog.enree.co/2013/01/salesforce-apex-post-mutipartform-data.html

NOTE: Deploying zip file is working with MetadataService.MetaPort.

I tried it also from the Postman. Normally Postman is uploading files with multipart. But for this API still its saying undefined for files.

1 Answer 1


In your header, where you set name="json", you need to instead set to name="entity_content".

It seems that the example in the documentation setting to "json" is incorrect.

Credit to Deploying Metadata with rest resources after hours of searching.

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