helper recipe for checking versions

recipes-help/check-versions/check-versions_1.0.bb

+SUMMARY = "helper script"
+DESCRIPTION = "compare built versions with the ones on the target system"
+
+AUTHOR = "Elphel Inc."
+HOMEPAGE = "http://www3.elphel.com/" 
+
+LICENSE = "GPLv3"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/GPL-3.0;md5=c79ff39f19dfec6d293b95dea7b07891"
+
+deltask do_fetch
+deltask do_unpack
+deltask do_patch
+deltask do_configure 
+deltask do_compile 
+deltask do_install 
+deltask do_populate_sysroot
+deltask do_populate_lic 
+deltask do_rm_work
+#deltask do_build
+
+inherit nopackages
+
+INHIBIT_DEFAULT_DEPS = "1"
+DEPENDS = ""
+PACKAGES = ""
+
+python do_run(){
+
+  user = d.getVar('REMOTE_USER', True) 
+  ip = d.getVar('REMOTE_IP', True)
+  pdir = "/etc/elphel393/packages"
+  
+  localpdir = "rootfs-elphel"
+  imagedir = "image"
+  topdir = d.getVar('TOPDIR', True)+"/../../"
+
+  projects_list = topdir+"projects.json"
+  
+  print("Checking packages' versions - locally built vs installed on the remote system")
+  print("    Remote system: "+user+"@"+ip)
+  print("    Get remote package list")
+  
+  ispdir = command_over_ssh(d,"'if [ -d "+pdir+" ]; then echo 1; else echo 0;fi'")
+  
+  remote_list = []
+  
+  if ispdir=="1":
+    # print remote package list
+    tmp_str = command_over_ssh(d,"'ls "+pdir+"'")
+    print(tmp_str)
+    
+    tmp_list = tmp_str.split()
+    for elem in tmp_list:
+      remote_list.append(elem.split("-"))
+      
+  else:
+    raise Exception("\033[1;37m"+user+"@"+ip+":"+pdir+": No such file or directory\033[0m")
+  
+  # projects_list/remote_list/
+  import json
+  
+  with open(projects_list) as data_file:
+    Projects = json.load(data_file)
+    
+  for p,v in Projects.items():
+    if p==localpdir:
+      for k,l in v.items():
+        print("Project: "+k)
+        tmp_path = topdir+localpdir+"/"+k
+        if (os.path.isdir(tmp_path)):
+          if (os.path.isdir(tmp_path+"/"+imagedir+pdir)):
+            for root,dir,files in os.walk(tmp_path+"/"+imagedir+pdir):
+              for name in files:
+                tmp_name = name.split("-")
+                for elem in remote_list:
+                  if elem[0]==tmp_name[0]:
+                    print("Names match")
+                    if elem[1]==tmp_name[1]:
+                      print("    versions match: "+name)
+                    else:
+                      bb.warn("project "+k+": package versions do not match, local: "+name+" vs remote: "+elem[0]+"-"+elem[1])
+          else:
+            bb.warn("project "+k+" is not built or too old")
+            #raise Exception("\033[1;37mproject is not built\033[0m")
+        else:
+          bb.warn("project "+k+" is missing")
+          #raise Exception("\033[1;37mproject is missing\033[0m")
+
+}
+
+addtask do_run before do_build
+
+def command_over_ssh(d,command):
+    import subprocess
+    user = d.getVar('REMOTE_USER', True)
+    id = d.getVar('IDENTITY_FILE', True)
+    ip = d.getVar('REMOTE_IP', True)
+    cmd = "ssh -i "+id+" "+user+"@"+ip+" "+command
+    try:
+        ret = subprocess.check_output(cmd,stderr=subprocess.STDOUT,shell=True)
+    except subprocess.CalledProcessError:
+        raise Exception("Copying to target requires access by public key. Run: \033[1;37mssh-copy-id "+REMOTE_USER+"@"+REMOTE_IP+"\033[0m")
+        
+    return ret.strip()
+