mapper: Generate an environment file

Mapper will soon consume four command line arguments that
limit the scope of watched path and interface namespaces.

Add tooling to generate this environment file based on a
new bitbake variables.

Add xyz-openbmc_project and org-openbmc by default in the
Phosphor layer and other layers can add additional namespaces
as needed.

Change-Id: I1c03aa91b75d03652a8a8fb80737553fef224fdf
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/meta-phosphor/common/recipes-phosphor/dbus/phosphor-mapper.bb b/meta-phosphor/common/recipes-phosphor/dbus/phosphor-mapper.bb
index ba9f15641..c515a099a 100644
--- a/meta-phosphor/common/recipes-phosphor/dbus/phosphor-mapper.bb
+++ b/meta-phosphor/common/recipes-phosphor/dbus/phosphor-mapper.bb
@@ -9,11 +9,13 @@ inherit autotools pkgconfig
 inherit obmc-phosphor-python-autotools
 inherit obmc-phosphor-dbus-service
 inherit obmc-phosphor-systemd
+inherit phosphor-mapperdir
 
 DEPENDS += "systemd"
 DEPENDS += "autoconf-archive-native"
 DEPENDS += "sdbusplus"
 DEPENDS += "phosphor-logging"
+DEPENDS += "${PN}-config-native"
 
 DBUS_SERVICE_${PN} += "xyz.openbmc_project.ObjectMapper.service"
 SYSTEMD_SERVICE_${PN} += " \
@@ -22,6 +24,7 @@ SYSTEMD_SERVICE_${PN} += " \
         "
 RDEPENDS_libmapper += "libsystemd"
 RDEPENDS_${PN} += " \
+        python-argparse \
         python-xml \
         python-dbus \
         python-pygobject \
@@ -41,3 +44,52 @@ python populate_packages_prepend () {
 }
 PACKAGES_DYNAMIC += "^libmapper.*"
 FILES_${PN}_remove = "${libdir}/lib*.so.* ${libdir}/*"
+
+# Construct a systemd environment file with mapper commandline
+# from the native sysroot /usr/share/phosphor-mapper filesystem.
+python do_emit_env() {
+    path = d.getVar('STAGING_DIR_NATIVE', True) + \
+        d.getVar('namespace_dir', True)
+    paths = []
+    for p in os.listdir(path):
+        paths.append(os.sep + os.sep.join(p.split('-')))
+
+    path = d.getVar('STAGING_DIR_NATIVE', True) + \
+        d.getVar('interface_dir', True)
+    interfaces = []
+    for i in os.listdir(path):
+        interfaces.append('.'.join(i.split('-')))
+
+    path = d.getVar('STAGING_DIR_NATIVE', True) + \
+        d.getVar('blacklist_dir', True)
+    blacklists = []
+    for b in os.listdir(path):
+        blacklists.append(os.sep + os.sep.join(b.split('-')))
+
+    path = d.getVar('STAGING_DIR_NATIVE', True) + \
+        d.getVar('interfaceblacklist_dir', True)
+    interface_blacklists = []
+    for ib in os.listdir(path):
+        interface_blacklists.append('.'.join(ib.split('-')))
+
+    path = [d.getVar('D', True) + d.getVar('envfiledir', True)]
+    path.append('obmc')
+    path.append('mapper')
+    parent = os.path.join(*path[:-1])
+    path = os.path.join(*path)
+
+    if not os.path.exists(parent):
+        os.makedirs(parent)
+    with open(path, 'w+') as fd:
+        fd.write('MAPPER_NAMESPACES="{}"'.format(' '.join(paths)))
+        fd.write('\n')
+        fd.write('MAPPER_INTERFACES="{}"'.format(' '.join(interfaces)))
+        fd.write('\n')
+        fd.write('MAPPER_BLACKLISTS="{}"'.format(' '.join(blacklists)))
+        fd.write('\n')
+        fd.write('MAPPER_INTERFACEBLACKLISTS="{}"'.format(' '.join(interface_blacklists)))
+        fd.write('\n')
+}
+
+do_install[postfuncs] += "do_emit_env"
+do_install[vardeps] += "PHOSPHOR_MAPPER_NAMESPACES"