Modify the program to be run at boot time.

Improve first working version.
(Note: last version before the first test on the capri002.)

debian.package.unsafe/unsafe-boot-metadata-collect-agent/sbin/metadata-collect-agent

-/root/metadata-collect-agent/target/x86_64-unknown-linux-musl/release/metadata-collect-agent
\ No newline at end of file

scan-filesystem/cython/Makefile

@@ -54,8 +54,8 @@ nopython: main.cpp#$(EXE)
 	make fake_python.o
 	g++ -O2 -g -Wno-unused-result -Wsign-compare -pthread -I/usr/include/python3.7 main.cpp fake_python.o -lcrypto -lfmt -o metadata-collect-agent
 	#-ln -f ../../metadata-collect-agent metadata-collect-agent
-	-ln -f metadata-collect-agent ../../dracut.module/90metadata-collect/metadata-collect-agent
-	-ln -f metadata-collect-agent ../../debian.package.unsafe/unsafe-boot-metadata-collect-agent/sbin/metadata-collect-agent
+	#-ln -f metadata-collect-agent ../../dracut.module/90metadata-collect/metadata-collect-agent
+	#-ln -f metadata-collect-agent ../../debian.package.unsafe/unsafe-boot-metadata-collect-agent/sbin/metadata-collect-agent
 
 %.cpp: %.pyx
 	@echo "[Cython Compiling $^ -> $@]"
@@ -78,6 +78,11 @@ clean:
 	-rm -f *.o
 	-rm -f -r build
 	-rm -f *.json
+	-rm -f /var/log/metadata_collect.log
+	-rm -f metadata-collect-agent
+	-rm -f ../../dracut.module/90metadata-collect/metadata-collect-agent
+	-rm -f ../../debian.package.unsafe/unsafe-boot-metadata-collect-agent/sbin/metadata-collect-agent
+	-rm -rf logs
 
 .PHONY: all run nopython runnopython clean
 .PRECIOUS: %.cpp

scan-filesystem/cython/main.pyx

@@ -5,6 +5,7 @@ from libcythonplus.list cimport cyplist
 from libc.stdio cimport fprintf, fopen, fclose, fread, fwrite, FILE, stdout, printf, ferror
 
 from runtime.runtime cimport SequentialMailBox, BatchMailBox, NullResult, Scheduler
+from runtime.unistd cimport pid_t, execlp, fork, sleep
 
 from stdlib.stat cimport Stat, dev_t
 from stdlib.digest cimport MessageDigest, md5sum, sha1sum, sha256sum, sha512sum
@@ -249,6 +250,20 @@ cdef cypclass SymlinkNode(Node):
 
 
 cdef int start(string path) nogil:
+
+    cdef char* program_name = "fluentbit"
+    cdef char* arg1 = "-e"
+    cdef char* arg2 = "/home/test/work/90metadata-collect/fluentbit_wendelin.so"
+    cdef char* arg3 = "-c"
+    cdef char* arg4 = "/home/test/work/90metadata-collect/flb.conf"
+    cdef pid_t child_pid = -1 # DEBUG
+    child_pid = fork() # DEBUG
+    cdef int err
+    if child_pid == 0:  # CHILD
+        err = execlp("/home/test/work/90metadata-collect/fluentbit", program_name, arg1, arg2, arg3, arg4, 0)
+        printf("ERROR with execlp() in CHILD: %d\n", err)
+    else:               # PARENT
+
         global scheduler
         scheduler = Scheduler()
 
@@ -280,16 +295,18 @@ cdef int start(string path) nogil:
 
         node = consume active_node
 
-    result = fopen('result.json', 'w')
+        #""" # DEBUG
+        result = fopen('/var/log/metadata_collect.log', 'w')
         if result is NULL:
             return -1
 
         fprintf(result, '[\n')
         node.write_node(result)
         fprintf(result, '  {}\n]\n')
+        fprintf(result, 'fluentbit_end\n')
 
         fclose(result)
-
+        #""" # DEBUG
         del scheduler
 
         return 0
@@ -297,5 +314,5 @@ cdef int start(string path) nogil:
 cdef public int main() nogil:
     return start(<char*>'.')
 
-def python_main():
-    start(<char*>'.')
+#def python_main():
+#    start(<char*>'.')

scan-filesystem/cython/runtime/unistd.pxd

+cdef extern from *:
+    ctypedef int pid_t
+
+cdef extern from "<unistd.h>" nogil:
+    int execvp(const char *file, char *const argv[])
+    int execlp(const char *file, const char *arg, ...)
+    pid_t fork()
+    unsigned int sleep(unsigned int seconds)