* This class adds a general method to collect data across recipes.
* The output is a conf file which can be parsed by the bitbake parser.
* Basic routines are made available to extract data from the output.
Signed-off-by: Jacob Stiffler <j-stiff...@ti.com>
---
meta-arago-distro/classes/recipe-data.bbclass | 100 ++++++++++++++++++++++++++
1 file changed, 100 insertions(+)
create mode 100644 meta-arago-distro/classes/recipe-data.bbclass
diff --git a/meta-arago-distro/classes/recipe-data.bbclass
b/meta-arago-distro/classes/recipe-data.bbclass
new file mode 100644
index 0000000..be1db1f
--- /dev/null
+++ b/meta-arago-distro/classes/recipe-data.bbclass
@@ -0,0 +1,100 @@
+# This class will record certain information about dependent recipes to a conf
+# file. This way it can be retrieved by other recipes. For example, this can be
+# used to obtain the SRC_URI for the SDK's SW manifest.
+
+# Configuration file to record the recipe data.
+RECIPE_DATA_FILE ?= "${TMPDIR}/recipe_data.conf"
+
+# Variables to record
+RECIPE_DATA_VARS ?= "PV SRC_URI FILE"
+
+
+# Helper to load the data from the conf file
+def recipe_data_load(d, recipe_data = bb.data.init()):
+ fn = d.getVar('RECIPE_DATA_FILE', True)
+
+ if not fn:
+ bb.fatal('"RECIPE_DATA_FILE" is not defined!')
+
+ if os.path.exists(fn):
+ with bb.utils.fileslocked([fn + '.lock']):
+ try:
+ bb.parse.handle(fn, recipe_data)
+ except Exception as e:
+ bb.warn('ERROR parsing "%s"' % fn)
+ bb.fatal(str(e))
+
+ return recipe_data
+
+
+def recipe_data_get_var(var, pn, d):
+ if var not in (d.getVar('RECIPE_DATA_VARS', True) or '').split():
+ bb.fatal('Variable "%s" was not configured to be recored' % var)
+
+ recipe_data = recipe_data_load(d)
+ return recipe_data.getVar('%s_pn-%s' % (var,pn), True)
+
+# Add a shell variety so that it can work in shell tasks
+# *** In shell tasks, inline python will be executed during parsing, so shell
+# *** variables passed as input.
+recipe_data_get_var_sh() {
+ local pn="$1"
+ local var="$2"
+
+ sed -ne 's|'$var'_pn-'$pn'[ \t]*=[ \t]*"\(.*\)"[ \t]*$|\1|p'
${RECIPE_DATA_FILE}
+}
+
+# Update the conf file with a new data.
+# Variables such as "FILE" and "TOPDIR" are filtered out by default.
+def recipe_data_update(fn, update_data, var_blacklist = ['__.*', 'FILE',
'TOPDIR'], expand = False):
+ import re
+
+ recipe_data = bb.data.init()
+
+ # Create the regex to filter out variables
+ re_blacklist = re.compile('^' + '$|^'.join(var_blacklist) + '$')
+ with bb.utils.fileslocked([fn + '.lock']):
+ try:
+ bb.parse.handle(fn, recipe_data)
+ except:
+ pass
+
+ for var in update_data.keys():
+ recipe_data.setVar(var, update_data.getVar(var,expand))
+
+ # We could use bb.data_smart's built in "emit_var", but that gives
+ # unnecessary comments.
+ with open(fn, "w") as f:
+ for var in recipe_data.keys():
+ if not re_blacklist.match(var):
+ f.write('%s = "%s"\n' % (var,
recipe_data.getVar(var,expand)))
+
+
+addtask emit_recipe_data
+do_emit_recipe_data[nostamp] = "1"
+python do_emit_recipe_data(){
+ recipe_vars = (d.getVar('RECIPE_DATA_VARS', True) or '').split()
+ recipe_data_file = d.getVar('RECIPE_DATA_FILE', True)
+
+ pn = d.getVar('PN', True) or bb.fatal('"PN" is not defined!')
+
+ data = bb.data.init()
+
+ # Set pn-${PN} to the overrides for convenience
+ data.setVar('OVERRIDES', 'pn-${PN}')
+ for var in recipe_vars:
+ val = d.getVar(var, True) or ''
+ data.setVar('%s_pn-%s' % (var, pn), val)
+
+ recipe_data_update(recipe_data_file, data)
+}
+
+# Add empty task to control dependencies
+addtask emit_recipe_data_all after do_emit_recipe_data
+do_emit_recipe_data_all[noexec] = "1"
+do_emit_recipe_data_all[nostamp] = "1"
+do_emit_recipe_data_all[recrdeptask] = "do_emit_recipe_data_all
do_emit_recipe_data"
+do_emit_recipe_data_all[recideptask] = "do_${BB_DEFAULT_TASK}"
+do_emit_recipe_data_all() {
+ :
+}
--
2.7.4
_______________________________________________
meta-arago mailing list
meta-arago@arago-project.org
http://arago-project.org/cgi-bin/mailman/listinfo/meta-arago
