Added a non boolean configuration and other changes as suggested by Jon

scripts/base/frameworks/logging/main.zeek

@@ -11,8 +11,7 @@ export {
 	## The log ID implicitly determines the default name of the generated log
 	## file.
 	type Log::ID: enum {
-		## Dummy place-holder.
-		UNKNOWN
+		PRINTLOG
 	};
 
 	## If true, local logging is by default enabled for all filters.
@@ -75,21 +74,35 @@ export {
 	## Returns: The path to be used for the filter.
 	global default_path_func: function(id: ID, path: string, rec: any) : string &redef;
 
-	# Log Print Statements
-
+	## If :zeek:see:`Log::print_to_log` is set to redirect, ``print`` statements will
+	## automatically populate log entries with the fields contained in this record.
 	type PrintLogInfo: record {
 		## Current timestamp.
 		ts:                  time              &log;
 		## Set of strings passed to the print statement.
-		vals:                set[string]       &log;
+		vals:                string_vec        &log;
 	};
 
-	redef enum Log::ID += {PRINTLOG};
+	## Configurations for :zeek:see:`Log::print_to_log`
+	type PrintLogType: enum {
+		## No redirection of ``print`` statements.
+		REDIRECT_NONE,
+		## Redirection of those ``print`` statements that were being logged to stdout,
+		## leaving behind those set to go to other specific files.
+		REDIRECT_STDOUT,
+		## Redirection of all ``print`` statements.
+		REDIRECT_ALL
+	};
 
-	## If true, logging is enabled for print statements instead of output to files
-	const print_to_log = F &redef;
+	## Event for accessing logged print records
+	global log_print: event(rec: PrintLogInfo);
 
-	## If print_to_log is true, this is the path to which the print Log Stream writes
+	## Set configuration for ``print`` statements redirected to logs
+	## :zeek:see:`Log::print_log_type`
+	const print_to_log: PrintLogType = REDIRECT_NONE &redef;
+
+	## If :zeek:see:`Log::print_to_log` is enabled to write to a print log,
+	## this is the path to which the print Log Stream writes to
 	const print_log_path = "print" &redef;
 
 	# Log rotation support.
@@ -663,7 +676,7 @@ function remove_default_filter(id: ID) : bool
 
 event zeek_init() &priority=5
 	{
-	if ( print_to_log )
+	if ( print_to_log != REDIRECT_NONE )
 		# "print" added for the test coverage.find-bro-logs
-		Log::create_stream(PRINTLOG, [$columns=PrintLogInfo, $path=print_log_path]); #"print"
+		Log::create_stream(PRINTLOG, [$columns=PrintLogInfo, $ev=log_print, $path=print_log_path]); #"print"
 	}

src/Stmt.cc

@@ -15,6 +15,7 @@
 #include "Traverse.h"
 #include "Trigger.h"
 #include "logging/Manager.h"
+#include "IntrusivePtr.h"
 
 const char* stmt_name(BroStmtTag t)
 	{
@@ -185,48 +186,57 @@ TraversalCode ExprListStmt::Traverse(TraversalCallback* cb) const
 
 static BroFile* print_stdout = 0;
 
-TableVal* get_string_set_from_vals (val_list* vals, ODesc* d)
+static EnumVal* LookupEnumID (const string& module_name, const char* name)
 	{
-	ListVal* set = new ListVal(TYPE_STRING);
+	ID* id = lookup_ID(name, module_name.c_str());
+	assert(id);
+	assert(id->IsEnumConst());
+
+	EnumType* et = id->Type()->AsEnumType();
+
+	int index = et->Lookup(module_name, name);
+	assert(index >= 0);
+	EnumVal* val = et->GetVal(index);
+	assert(val);
+
+	return val;
+	}
+
+static Val* print_log (val_list* vals, ODesc* d)
+	{
+	EnumVal* plval = LookupEnumID("Log", "PRINTLOG");
+	RecordType* pltype = internal_type("Log::PrintLogInfo")->AsRecordType();
+
+	RecordVal* record = new RecordVal(pltype);
+	VectorVal* vec = new VectorVal(internal_type("string_vec")->AsVectorType());
+
 	for ( int i = 0; i < vals->length(); i++ )
 		{
 		d->Clear();
 		Val* val = (*vals)[i];
 		val->Describe(d);
-		set->Append(new StringVal(d->Description()));
+		const bool assigned = vec->Assign(i, new StringVal(d->Description()));
+		assert(assigned);
 		}
 
-	return set->ConvertToSet();
+	record->Assign(0, new Val(current_time(), TYPE_TIME));
+	record->Assign(1, vec);
+
+	log_mgr->Write(plval, record);
+	Unref(record);
+	Unref(plval);
+	return 0;
 	}
 
 Val* PrintStmt::DoExec(val_list* vals, stmt_flow_type& /* flow */) const
 	{
 	RegisterAccess();
-
-	if ( internal_val("Log::print_to_log")->AsBool() ) 
+	unsigned int PrintToLog = internal_val("Log::print_to_log")->AsEnumVal()->ForceAsUInt();
+	if ( PrintToLog == 2 ) // Redirect all Print Statements to Log
 		{
-		ID* plid = global_scope()->Lookup("Log::PRINTLOG");
-		assert(plid);
-		assert(plid->IsEnumConst());
-
-		EnumType* et = plid->Type()->AsEnumType();
-		int plint = et->Lookup("Log", "PRINTLOG");
-		assert(plint >= 0);
-		EnumVal* plval = et->GetVal(plint);
-		assert(plval);
-
-		RecordType* pltype = log_mgr->StreamColumns(plval);
-		assert(pltype);
-
-		RecordVal record = RecordVal(pltype);
 		ODesc d(DESC_READABLE);
 		d.SetFlush(0);
-
-		record.Assign(0, new Val(current_time(), TYPE_TIME));
-		record.Assign(1, get_string_set_from_vals(vals, &d));
-
-		log_mgr->Write(plval, &record);
-		return 0;
+		return print_log(vals, &d);
 		}
 
 	if ( ! print_stdout )
@@ -244,6 +254,13 @@ Val* PrintStmt::DoExec(val_list* vals, stmt_flow_type& /* flow */) const
 		++offset;
 		}
 
+	if ( f->Name() == print_stdout->Name() && PrintToLog )
+		{
+		ODesc d(DESC_READABLE);
+		d.SetFlush(0);
+		return print_log(vals, &d);
+		}
+
 	desc_style style = f->IsRawOutput() ? RAW_STYLE : STANDARD_STYLE;
 
 	if ( f->IsRawOutput() )

testing/btest/Baseline/scripts.base.frameworks.logging.print-log-stdout/anotherfile

@@ -0,0 +1 @@
+from event, [ts=1574278151.973419, vals=[2, T]]

testing/btest/Baseline/scripts.base.frameworks.logging.print-log-stdout/otherfile

@@ -0,0 +1,2 @@
+hello world ,
+2, T

testing/btest/Baseline/scripts.base.frameworks.logging.print-log-stdout/print.log

@@ -0,0 +1,11 @@
+#separator \x09
+#set_separator	,
+#empty_field	(empty)
+#unset_field	-
+#path	print
+#open	2019-11-18-15-32-20
+#fields	ts	vals
+#types	time	vector[string]
+1574119940.484001	hello world \x2c
+1574119940.484104	2,T
+#close	2019-11-18-15-32-20

testing/btest/Baseline/scripts.base.frameworks.logging.print-log/print_statements.log

@@ -3,9 +3,11 @@
 #empty_field	(empty)
 #unset_field	-
 #path	print_statements
-#open	2019-11-13-18-11-01
+#open	2019-11-19-00-27-19
 #fields	ts	vals
-#types	time	set[string]
-1573697461.909861	hello world \x2c
-1573697461.909946	T,2
-#close	2019-11-13-18-11-01
+#types	time	vector[string]
+1574123239.274803	file "otherfile" of string,hello world \x2c
+1574123239.275147	hello world \x2c
+1574123239.275171	file "otherfile" of string,2,T
+1574123239.275177	2,T
+#close	2019-11-19-00-27-19

testing/btest/core/leaks/print-log.zeek

@@ -0,0 +1,14 @@
+# @TEST-GROUP: leaks
+#
+# @TEST-REQUIRES: zeek  --help 2>&1 | grep -q mem-leaks
+#
+# @TEST-EXEC: HEAP_CHECK_DUMP_DIRECTORY=. HEAPCHECK=local btest-bg-run zeek zeek -m -b -r $TRACES/http/get.trace %INPUT
+# @TEST-EXEC: btest-bg-wait 60
+
+redef Log::print_to_log = Log::REDIRECT_ALL;
+
+event new_connection(c: connection)
+    {
+    print "hello world ,";
+    print 2,T;
+    }

testing/btest/scripts/base/frameworks/logging/print-log-stdout.zeek

@@ -0,0 +1,25 @@
+#
+# @TEST-EXEC: zeek -b %INPUT
+# @TEST-EXEC: btest-diff print.log
+# @TEST-EXEC: btest-diff .stdout
+# @TEST-EXEC: btest-diff otherfile
+# @TEST-EXEC: btest-diff anotherfile
+
+redef Log::print_to_log = Log::REDIRECT_STDOUT;
+
+event zeek_init()
+	{
+	local f = open("otherfile");
+	print f, "hello world ,";
+	print "hello world ,";
+	print f,2,T;
+	print 2,T;
+	close(f);
+	}
+
+event Log::log_print (rec: Log::PrintLogInfo) 
+	{
+	local f = open("anotherfile");
+	print f,"from event",rec;
+	close(f);
+	}

testing/btest/scripts/base/frameworks/logging/print-log.zeek

@@ -1,12 +1,18 @@
 #
 # @TEST-EXEC: zeek -b %INPUT
 # @TEST-EXEC: btest-diff print_statements.log
+# @TEST-EXEC: btest-diff .stdout
+# @TEST-EXEC: btest-diff otherfile
 
-redef Log::print_to_log = T;
+redef Log::print_to_log = Log::REDIRECT_ALL;
 redef Log::print_log_path = "print_statements";
 
 event zeek_init()
 	{
+	local f = open("otherfile");
+	print f, "hello world ,";
 	print "hello world ,";
+	print f,2,T;
 	print 2,T;
+	close(f);
 	}