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Demo ETL > CIFS JSON to LOCAL MAIL
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";
	-> "[CONF_DIR_SOURCE]" "tmp/source";
	-> "[CONF_SOURCE_FILTER]" ".json";
	
	# 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 files into PID directory;
		log write (concat "Get files from '" [CONF_DIR_SOURCE]"'.") OK null null;

		json load "valid_files" "[]";
		json load "files_sources" (cifs ls [CONF_DIR_SOURCE] {cm get [CONF_SOURCE_CM];});
		json parse_array "files_sources" "/data" "row" {
			if (string ends_with (json select "row" "/[0]") [CONF_SOURCE_FILTER]) {
				json iarray "valid_files" / (json select "row" "/[0]") STR;
			};
		};
		
		json parse_array "valid_files" "/" "[filename]" {

			cifs get (concat [CONF_DIR_SOURCE] "/" [filename]) (concat "home/" [FLOW_PID] "/" [filename]) {cm get [CONF_SOURCE_CM];};
			log write (concat "Get file 'home/" [FLOW_PID] "/" [filename] "'.") OK null null;
		
		};

		# Delete source file;
		json parse_array "valid_files" "/" "[filename]" {

			cifs rm (concat [CONF_DIR_SOURCE] "/" [filename]) {cm get [CONF_SOURCE_CM];};
			log write (concat "Remove source file '" [CONF_DIR_SOURCE] "/" [filename] "'.") OK null null;

		};
	
	} {

		#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]";
	
	log write (concat (json count "valid_files" /) " file(s) to transform.") OK null null;

	if (> (json count "valid_files" /) 0) {

		#Step 2 is valid;
		stack flow_step [FLOW_PID] 2 (concat "extract_ok_" (json count "valid_files" /) "_files");
		
		json parse_array "valid_files" "/" "[filename]" {
		
			stack (date now) "folder1.folder2.folder3.step_3_transform.exe" "[FLOW_PID]" [FLOW_PID] "[filename]" [filename];
	
		};
		
	} {

		#Step 2 is valid;
		stack flow_step [FLOW_PID] 2 "extract_ok_zero_file";
		
		# No file into the directory;
		file delete (concat "home/" [FLOW_PID]);

	};

} "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"
{
	
	# HANDLE ;
	try {

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

		# EMAIL: don't use step 3;
		log write "EMAIL: don't use step 3" 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]" [filename];
		
	} {

		#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"
{
	
	# HANDLE ;
	try {
	
		# Flow initialization;
		stack flow_step [FLOW_PID] 4 "destination_connect...";

		# EMAIL: don't use step 4;
		log write "EMAIL: don't use step 4" OK null null;
		
		#Step 4 is valid;
		stack flow_step [FLOW_PID] 4 "destination_connect_ok";
		
		include "folder1.folder2.folder3.step_5_load.exe";
	
	} {

		#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_DESTINATION_CM_SMTP]" "demo_cm_smtp";
	-> "[CONF_DESTINATION_EMAIL_TO]" "jim@innov-ai.com;dan@innov-ai.com";
	-> "[CONF_DESTINATION_EMAIL_CC]" "contact@innov-ai.com";
	-> "[CONF_DESTINATION_EMAIL_BCC]" "contact@innov-ai.com";
	-> "[CONF_DESTINATION_EMAIL_SUBJECT]" (concat "Hello '" [filename] "'!");
	
	# HANDLE ;
	try {

		# Mark the flow as step 5;
		stack flow_step [FLOW_PID] 5 "load...";
		
		-> "[BODY]" "Hi, here information :";
		
		log write (concat "Send the file 'home/" [FLOW_PID] "/" [filename] "' by email...") OK null null;

		json load "flow_source" (file load (concat "home/" [FLOW_PID] "/" [filename]));
		
		# BEGIN METHOD 1;
		-> "[T_A]" "";
		-> "[T_B]" "";
		-> "[T_C]" "";
		json parse_obj "flow_source" "/" "[key]" "[val]" {

			-> (concat "[T_" [key] "]") [val];

		};
		concat_var "[BODY]" [_n_] [T_A] ", " [T_B] ", " [T_C];
		concat_var "[BODY]" [_n_] [_n_] "END.";
		json load "files" "[]";
		json iarray "files" / (concat "home/" [FLOW_PID] "/" [filename]) STR;
		mail send [CONF_DESTINATION_CM_SMTP] [CONF_DESTINATION_EMAIL_TO] [CONF_DESTINATION_EMAIL_CC] [CONF_DESTINATION_EMAIL_BCC] [CONF_DESTINATION_EMAIL_SUBJECT] [BODY] (json doc "files");
		# END METHOD 1;
		
		# BEGIN METHOD 2;
		json parse_array "flow_source" "/" "row" {

			-> "[T_A]" (json select "row" /A);
			-> "[T_B]" (json select "row" /B);
			-> "[T_C]" (json select "row" /C);

			mail send [CONF_DESTINATION_CM_SMTP] [CONF_DESTINATION_EMAIL_TO] [CONF_DESTINATION_EMAIL_CC] [CONF_DESTINATION_EMAIL_BCC] [CONF_DESTINATION_EMAIL_SUBJECT] (concat [T_A] ", " [T_B] ", " [T_C]) "[]";
		
		};
		# END METHOD 2;
		
		log write (concat "Sended.") OK null null;

		#Step 5 is valid;
		stack flow_step [FLOW_PID] 5 "load_ok";
		
	} {

		#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";
};