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Demo ETL > LOCAL MAIL to FTPS EXCELX
Source code
#All MentDB scripts are compatible with the 'Supervision' application;

if (not (group exist "0001_folder1_folder2_folder3")) {
	group add "0001_folder1_folder2_folder3";
};

script merge "folder1.folder2.folder3.step_1_source_connect.exe" true 5
  (param
  )
  "Connect to the source"
{

	# CONFIGURATION ;
	-> "[CONF_NAME_OF_THE_FLOW]" "name_of_the_flow";

	# INITIALIZATION ;
	-> "[FLOW_PID]" [PID];
	
	# HANDLE ;
	try {
	
		# Flow initialization;
		stack flow_init [FLOW_PID] [CONF_NAME_OF_THE_FLOW] "{}";
		stack flow_step [FLOW_PID] 1 "source_connect...";

		# Local connection: don't use step 1;
		log write "Source: Local connection" OK null null;
		
		#Step 1 is valid;
		stack flow_step [FLOW_PID] 1 "source_connect_ok";
		
		include "folder1.folder2.folder3.step_2_extract.exe";
	
	} {

		#Step 1 is not valid;
		stack flow_step [FLOW_PID] 1 "source_connect_KO";
		
		# Give the error to the stack and stop the process;
		exception (1) ([global_err]);
	
	} "[global_err]";
	
} "Return nothing";
if (not (group is granted script "folder1.folder2.folder3.step_1_source_connect.exe" "0001_folder1_folder2_folder3")) {
	group grant script "folder1.folder2.folder3.step_1_source_connect.exe" "0001_folder1_folder2_folder3";
};

script merge "folder1.folder2.folder3.step_2_extract.exe" true 1
  (param
  )
  "Extract files from the source"
{

	# CONFIGURATION ;
	-> "[CONF_SOURCE_CM]" "demo_cm_imap";
	-> "[CONF_SOURCE_RECEIVE_DIR]" (concat "home/" [FLOW_PID]);
	
	# HANDLE ;
	try {

		# Mark the flow as step 2;
		stack flow_step [FLOW_PID] 2 "extract...";

		# Create the local directory PID;
		file mkdir (concat "home/" [FLOW_PID]);
		
		#Get mails;
		json load "conf_mail" (cm get [CONF_SOURCE_CM]);
		#json iobject "conf_mail" / "alternateSubDir" "tmp/PPJ" STR;
		json iobject "conf_mail" / "partialfetch" "true" STR;
		json iobject "conf_mail" / "max_buffer" "16000" STR;
		json iobject "conf_mail" / "fetchsize"  "512000" STR;
		json iobject "conf_mail" / "sessionTimeout" "900000" STR;
		#parameter add "0001_folder1_folder2_folder3_MAIL_MESSAGES_ORDERS" "{}";
		json iobject "conf_mail" / "mark_msgs_order" (parameter get value "0001_folder1_folder2_folder3_MAIL_MESSAGES_ORDERS") OBJ;
		json load "receive_state" (mail download imap_disk [CONF_SOURCE_RECEIVE_DIR]
			3 unread "TERMINE|INBOX/atraiter" false true
			"2018-01-01" null
			(mql {string matches [imap_from] ".*digest-noreply@quora.com.*";})
			(mql {string matches [imap_subject] ".*champ.*";})
			{json doc "conf_mail"}
		);
		parameter update "0001_folder1_folder2_folder3_MAIL_MESSAGES_ORDERS" (json select "receive_state" /mark_msgs_order);

		if (not (is null or empty (json select "receive_state" "/Error"))) {

			

		};
	
		if (> (json select "receive_state" "/NbReceived") 0) {
	
			-> "[sub_receive_dir]" (json select "receive_state" "/Directory");
	
			json load "sub_receive_dir" (file dir_list [sub_receive_dir]);
			json parse_array "sub_receive_dir" "/" "[mail]" {
	
				if (string ends_with [mail] ".json") {
	
					json load "current_mail" (file load (concat [sub_receive_dir] "/" [mail]));

					json parse_array "current_mail" "/Parts" "part" {
					
						if (equal (json select "part" "/type") "file") {
							if (string ends_with (json select "part" "/content_filename") ".csv") {
								stack (date now) "folder1.folder2.folder3.step_3_transform.exe" "[FLOW_PID]" [FLOW_PID] "[filename]" (json select "part" "/content_filename");
							};
						};
						
					};
	
				};
			
			};
	
		};
		
		#Step 2 is valid;
		stack flow_step [FLOW_PID] 2 "extract_ok";
	
	} {

		#Step 2 is not valid;
		stack flow_step [FLOW_PID] 2 "extract_KO";
		
		# Give the error to the stack and stop the process;
		exception (1) ([global_err]);
	
	} "[global_err]";

} "Return nothing";
if (not (group is granted script "folder1.folder2.folder3.step_2_extract.exe" "0001_folder1_folder2_folder3")) {
	group grant script "folder1.folder2.folder3.step_2_extract.exe" "0001_folder1_folder2_folder3";
};

script merge "folder1.folder2.folder3.step_3_transform.exe" true 1
  (param
  	(var "[FLOW_PID]" {true} "The flow PID" is_null:true is_empty:true "1")
  	(var "[filename]" {true} "The filename" is_null:true is_empty:true "file.xxx")
  )
  "Transform the file"
{

	# CONFIGURATION ;
	-> "[CONF_SOURCE_CSV_SEPARATOR]" ",";
	-> "[CONF_SOURCE_CSV_QUOTE]" "'";
	-> "[CONF_SOURCE_CSV_FORCE_COLUMN]" "A,B,C";
	-> "[CONF_DESTINATION_NEW_FILENAME]" (concat "new_filename_" (date systimestamp_min) ".xlsx");
	-> "[CONF_DESTINATION_SHEETNAME]" "sheet1";
	
	# HANDLE ;
	try {

		# Mark the flow as step 3;
		stack flow_step [FLOW_PID] 3 "transform...";

		excelx load empty "flow";
		excelx sheet add "flow" [CONF_DESTINATION_SHEETNAME];
		
		log write (concat "Build the file 'home/" [FLOW_PID] "/" [CONF_DESTINATION_NEW_FILENAME] "' from 'home/" [FLOW_PID] "/" [filename] "'...") OK null null;
		
		excelx cell set "flow" [CONF_DESTINATION_SHEETNAME] 0 0 "ColNameA" STR;
		excelx cell set "flow" [CONF_DESTINATION_SHEETNAME] 0 1 "ColNameB" STR;
		excelx cell set "flow" [CONF_DESTINATION_SHEETNAME] 0 2 "ColNameC" STR;
		
		-> "[index]" 1;
		csv parse (mql "T") (concat "home/" [FLOW_PID] "/" [filename]) (mql [CONF_SOURCE_CSV_SEPARATOR]) (mql [CONF_SOURCE_CSV_QUOTE]) (mql [CONF_SOURCE_CSV_FORCE_COLUMN]) {
		
			excelx cell set "flow" [CONF_DESTINATION_SHEETNAME] [index] 0 [T_A] STR;
			excelx cell set "flow" [CONF_DESTINATION_SHEETNAME] [index] 1 [T_B] STR;
			excelx cell set "flow" [CONF_DESTINATION_SHEETNAME] [index] 2 [T_C] STR;
			
			++ "[index]";
		
		};

		excelx save "flow" (concat "home/" [FLOW_PID] "/" [CONF_DESTINATION_NEW_FILENAME]);
		excelx close "flow";

		log write (concat "Builded.") OK null null;

		#Step 3 is valid;
		stack flow_step [FLOW_PID] 3 "transform_ok";
		
		stack (date now) "folder1.folder2.folder3.step_4_destination_connect.exe" "[FLOW_PID]" [FLOW_PID] "[filename]" [CONF_DESTINATION_NEW_FILENAME];
	
	} {

		try {excelx close "flow";} {} "[err]";

		#Step 3 is not valid;
		stack flow_step [FLOW_PID] 3 "transform_KO";
		
		# Give the error to the stack and stop the process;
		exception (1) ([global_err]);
	
	} "[global_err]";

} "Return nothing";
if (not (group is granted script "folder1.folder2.folder3.step_3_transform.exe" "0001_folder1_folder2_folder3")) {
	group grant script "folder1.folder2.folder3.step_3_transform.exe" "0001_folder1_folder2_folder3";
};

script merge "folder1.folder2.folder3.step_4_destination_connect.exe" true 5
  (param
  	(var "[FLOW_PID]" {true} "The flow PID" is_null:true is_empty:true "1")
  	(var "[filename]" {true} "The filename" is_null:true is_empty:true "file.xxx")
  )
  "Connect to the destination"
{

	# CONFIGURATION ;
	-> "[CONF_DESTINATION_CM]" "demo_cm";
	
	# HANDLE ;
	try {
	
		# Flow initialization;
		stack flow_step [FLOW_PID] 4 "destination_connect...";

		ftps connect "destination_sess" {cm get [CONF_DESTINATION_CM];};
		ftps active "destination_sess";
		ftps passive "destination_sess";
		ftps exec prot "destination_sess" P;
		ftps parse pbsz "destination_sess" 0;
		ftps set type "destination_sess" "BINARY";
		
		#Step 4 is valid;
		stack flow_step [FLOW_PID] 4 "destination_connect_ok";
		
		include "folder1.folder2.folder3.step_5_load.exe";
	
	} {

		try {ftps disconnect "destination_sess";} {} "[err]";

		#Step 4 is not valid;
		stack flow_step [FLOW_PID] 4 "destination_connect_KO";
		
		# Give the error to the stack and stop the process;
		exception (1) ([global_err]);
	
	} "[global_err]";
	
} "Return nothing";
if (not (group is granted script "folder1.folder2.folder3.step_4_destination_connect.exe" "0001_folder1_folder2_folder3")) {
	group grant script "folder1.folder2.folder3.step_4_destination_connect.exe" "0001_folder1_folder2_folder3";
};

script merge "folder1.folder2.folder3.step_5_load.exe" true 1
  (param
  )
  "Load file to the destination"
{

	# CONFIGURATION ;
	-> "[CONF_DIR_DESTINATION]" "/remote/dir";
	
	# HANDLE ;
	try {

		ftps cd "destination_sess" [CONF_DIR_DESTINATION];

		# Mark the flow as step 5;
		stack flow_step [FLOW_PID] 5 "load...";
		
		log write (concat "Send '" (concat "home/" [FLOW_PID] "/" [filename]) "' to '" (concat [CONF_DIR_DESTINATION] "/" [filename]) "' ...") OK null null;

		# Send file into the destination directory;
		ftps put "destination_sess" (concat "home/" [FLOW_PID] "/" [filename]) (concat [CONF_DIR_DESTINATION] "/" [filename]) "RESUME";
		
		log write "Sended." OK null null;

		ftps disconnect "destination_sess";
		
		#Step 5 is valid;
		stack flow_step [FLOW_PID] 5 "load_ok";
		
	} {
	
		try {ftps disconnect "destination_sess";} {} "[err]";

		#Step 5 is not valid;
		stack flow_step [FLOW_PID] 5 "load_KO";
		
		# Give the error to the stack and stop the process;
		exception (1) ([global_err]);
	
	} "[global_err]";

} "Return nothing";
if (not (group is granted script "folder1.folder2.folder3.step_5_load.exe" "0001_folder1_folder2_folder3")) {
	group grant script "folder1.folder2.folder3.step_5_load.exe" "0001_folder1_folder2_folder3";
};