JJB: Add Jenkins job builder script

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: Ic9a1d58dcd6e9cb72aa91d31e16ec2c42b6b54da
diff --git a/ci/run-jjb.py b/ci/run-jjb.py
new file mode 100755
index 0000000..731ab18
--- /dev/null
+++ b/ci/run-jjb.py
@@ -0,0 +1,183 @@
+#!/usr/bin/python3
+
+import os
+import shutil
+import signal
+import string
+import subprocess
+import sys
+import xml.etree.ElementTree
+from distutils.spawn import find_executable
+
+
+def findparentfiles(fname):
+    filelist = []
+    newlist = []
+    args = ['grep', '-rl', '--exclude-dir=.git', fname]
+    proc = subprocess.run(args, capture_output=True)
+    data = proc.stdout.decode()
+    if proc.returncode != 0:
+        return filelist
+    for filename in data.splitlines():
+        if filename.endswith('.yaml') and '/' not in filename:
+            filelist.append(filename)
+        else:
+            newlist = findparentfiles(filename)
+            for tempname in newlist:
+                filelist.append(tempname)
+    return filelist
+
+
+jjb_cmd = find_executable('jenkins-jobs') or sys.exit('jenkins-jobs is not found.')
+jjb_args = [jjb_cmd]
+
+jjb_user = os.environ.get('JJB_USER')
+jjb_password = os.environ.get('JJB_PASSWORD')
+if jjb_user is not None and jjb_password is not None:
+    jenkins_jobs_ini = ('[job_builder]\n'
+                        'ignore_cache=True\n'
+                        'keep_descriptions=False\n'
+                        '\n'
+                        '[jenkins]\n'
+                        'user=%s\n'
+                        'password=%s\n'
+                        'url=https://ci.trustedfirmware.org/\n' % (jjb_user, jjb_password))
+    with open('jenkins_jobs.ini', 'w') as f:
+        f.write(jenkins_jobs_ini)
+    jjb_args.append('--conf=jenkins_jobs.ini')
+
+jjb_test_args = list(jjb_args)
+jjb_delete_args = list(jjb_args)
+
+# !!! "update" below and through out this file is replaced by "test" (using sed)
+# !!! in the sanity-check job.
+main_action = 'update'
+jjb_args.extend([main_action, 'template.yaml'])
+jjb_test_args.extend(['test', '-o', 'out/', 'template.yaml'])
+jjb_delete_args.extend(['delete'])
+
+if main_action == 'test':
+    # Dry-run, don't delete jobs.
+    jjb_delete_args.insert(0, 'echo')
+
+try:
+    git_args = ['git', 'diff', '--raw',
+                os.environ.get('GIT_PREVIOUS_COMMIT'),
+                os.environ.get('GIT_COMMIT')]
+    proc = subprocess.run(git_args, capture_output=True)
+except (OSError, ValueError) as e:
+    raise ValueError("%s" % e)
+
+data = proc.stdout.decode()
+if proc.returncode != 0:
+    raise ValueError("command has failed with code '%s'" % proc.returncode)
+
+filelist = []
+deletelist = []
+files = []
+for line in data.splitlines():
+    # Format of the git-diff; we only need OPERATION and FILE1
+    #
+    # :<OLD MODE> <NEW MODE> <OLD REF> <NEW REF> <OPERATION> <FILE1> <FILE2>
+    elems = line.split()
+    operation = elems[4][0]
+    filename = elems[5]
+
+    if filename.endswith('.yaml') and '/' not in filename:
+        # No point trying to test deleted jobs because they don't exist any
+        # more.
+        if operation == 'D':
+            deletelist.append(filename[:-5])
+            continue
+        # operation R100 is 100% rename, which means sixth element is the renamed file
+        if operation == 'R':
+            filename = elems[6]
+            # delete old job name
+            deletelist.append(elems[5][:-5])
+        filelist.append(filename)
+    else:
+        files = findparentfiles(filename)
+        for tempname in files:
+            filelist.append(tempname)
+
+# Remove duplicate entries in the list
+filelist = list(set(filelist))
+
+for conf_filename in filelist:
+    with open(conf_filename) as f:
+        buffer = f.read()
+        template = string.Template(buffer)
+        buffer = template.safe_substitute(
+            AUTH_TOKEN=os.environ.get('AUTH_TOKEN'),
+            LT_QCOM_KEY=os.environ.get('LT_QCOM_KEY'),
+            LAVA_USER=os.environ.get('LAVA_USER'),
+            LAVA_TOKEN=os.environ.get('LAVA_TOKEN'))
+        with open('template.yaml', 'w') as f:
+            f.write(buffer)
+        try:
+            proc = subprocess.run(jjb_args, capture_output=True)
+        except (OSError, ValueError) as e:
+            raise ValueError("%s" % e)
+
+        data = proc.stdout.decode()
+        if proc.returncode != 0:
+            raise ValueError("command has failed with code '%s'" % proc.returncode)
+
+        try:
+            shutil.rmtree('out/', ignore_errors=True)
+
+            proc = subprocess.run(jjb_test_args, capture_output=True)
+            data = proc.stdout.decode()
+            if proc.returncode != 0:
+                raise ValueError("command has failed with code '%s'" % proc.returncode)
+
+            proc = subprocess.run(['ls', 'out/'], capture_output=True)
+            data = proc.stdout.decode()
+            if proc.returncode != 0:
+                raise ValueError("command has failed with code '%s'" % proc.returncode)
+
+            for filename in data.splitlines():
+                # old job conf might have been removed because the job is now generated through the template
+                # do not delete the job in this case
+                if filename in deletelist:
+                    deletelist.remove(filename)
+
+                conf_name=os.path.splitext(conf_filename)[0]
+                conf_name=conf_name[:len(filename)]
+                if not filename.startswith(conf_name):
+                    raise ValueError("Job name %s does not match the file it is in: %s" % (filename, conf_name))
+                try:
+                    xmlroot = xml.etree.ElementTree.parse('out/' + filename).getroot()
+                    disabled = next(xmlroot.iterfind('disabled')).text
+                    if disabled != 'true':
+                        continue
+                    displayName = next(xmlroot.iterfind('displayName')).text
+                    if displayName != 'DELETE ME':
+                        continue
+                except:
+                    continue
+
+                deletelist.append(filename)
+
+        except (OSError, ValueError) as e:
+            raise ValueError("%s" % e)
+
+        shutil.rmtree('out/', ignore_errors=True)
+        os.remove('template.yaml')
+
+
+for deletejob in deletelist:
+    delete_args = list(jjb_delete_args)
+    delete_args.extend([deletejob])
+    try:
+        proc = subprocess.run(delete_args, capture_output=True)
+        data = proc.stdout.decode()
+        if proc.returncode != 0:
+            raise ValueError("command has failed with code '%s'" % proc.returncode)
+        print(data)
+    except (OSError, ValueError) as e:
+        raise ValueError("%s" % e)
+
+if os.path.exists('jenkins_jobs.ini'):
+    os.remove('jenkins_jobs.ini')
+