NR-233726: gzip logs

Author: cdillard-NewRelic

Agent/Utilities/NRLogger.m

@@ -15,6 +15,7 @@
 #import "NRMASupportMetricHelper.h"
 #import "NRMAFlags.h"
 #import "NRAutoLogCollector.h"
+#import "NRMAHarvesterConnection+GZip.h"
 
 NRLogger *_nr_logger = nil;
 
@@ -558,8 +559,9 @@ - (void)enqueueLogUpload {
             // Old version of the line
            // NSString* logMessagesJson = [NSString stringWithFormat:@"[ %@ ]", [[NSString alloc] initWithData:logData encoding:NSUTF8StringEncoding]];
 
-            NSData* formattedData = [logMessagesJson dataUsingEncoding:NSUTF8StringEncoding];
-
+            // Here we add gzip compression to the log data.
+            NSData* formattedData = [NRMAHarvesterConnection gzipData:[logMessagesJson dataUsingEncoding:NSUTF8StringEncoding]];
+            
             // We clear the log when we save the existing logs to uploadQueue.
             [self clearLog];
 
@@ -608,6 +610,10 @@ - (void) processNextUploadTask {
         [req setValue:self->logIngestKey forHTTPHeaderField:@"X-App-License-Key"];
         [req setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
 
+        //NSString* contentEncoding = message.length <= 512 ? kNRMAIdentityHeader : kNRMAGZipHeader;
+
+        [req setValue:kNRMAGZipHeader forHTTPHeaderField:kNRMAContentEncodingHeader];
+
         req.HTTPMethod = @"POST";
 
         NSURLSessionUploadTask *uploadTask = [session uploadTaskWithRequest:req fromData:formattedData completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {