[PATCH 1/2] utils: 'meas_json' utility to convert measurement feed into a JSON feed.

historical

---
 openbsc/src/utils/Makefile.am |   6 +-
 openbsc/src/utils/meas_json.c | 169 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 174 insertions(+), 1 deletion(-)
 create mode 100644 openbsc/src/utils/meas_json.c

diff --git a/openbsc/src/utils/Makefile.am b/openbsc/src/utils/Makefile.am
index f6255a0..89f2dfb 100644
--- a/openbsc/src/utils/Makefile.am
+++ b/openbsc/src/utils/Makefile.am
@@ -4,7 +4,7 @@ AM_LDFLAGS = $(COVERAGE_LDFLAGS)
 
 noinst_HEADERS = meas_db.h
 
-bin_PROGRAMS = bs11_config isdnsync
+bin_PROGRAMS = bs11_config isdnsync meas_json
 if HAVE_SQLITE3
 bin_PROGRAMS += osmo-meas-pcap2db osmo-meas-udp2db
 endif
@@ -32,6 +32,10 @@ meas_vis_SOURCES = meas_vis.c
 meas_vis_LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) -lcdk -lncurses
 meas_vis_CFLAGS = $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS)
 
+meas_json_SOURCES = meas_json.c
+meas_json_LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS)
+meas_json_CFLAGS = $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS)
+
 osmo_meas_pcap2db_SOURCES = meas_pcap2db.c meas_db.c
 osmo_meas_pcap2db_LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) -lpcap $(SQLITE3_LIBS)
 osmo_meas_pcap2db_CFLAGS = $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS)
diff --git a/openbsc/src/utils/meas_json.c b/openbsc/src/utils/meas_json.c
new file mode 100644
index 0000000..940e5e7
--- /dev/null
+++ b/openbsc/src/utils/meas_json.c
@@ -0,0 +1,169 @@
+/* Convert measurement report feed into JSON feed printed to stdout.
+ * Each measurement report is printed as a separae JSON root entry.
+ * All measurement reports are separated by a new line.
+ */
+
+/* (C) 2015 by Alexander Chemeris <Alexander.Chemeris at fairwaves.co>
+ * With parts of code adopted from different places in OpenBSC.
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <netinet/in.h>
+
+#include <osmocom/core/socket.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/select.h>
+
+#include <osmocom/gsm/gsm_utils.h>
+
+#include <openbsc/meas_feed.h>
+
+static void print_meas_rep_uni_json(struct gsm_meas_rep_unidir *mru)
+{
+	printf("\"RXL-FULL\":%d, \"RXL-SUB\":%d, ",
+		rxlev2dbm(mru->full.rx_lev),
+		rxlev2dbm(mru->sub.rx_lev));
+	printf("\"RXQ-FULL\":%d, \"RXQ-SUB\":%d",
+		mru->full.rx_qual, mru->sub.rx_qual);
+}
+
+static void print_meas_rep_json(struct gsm_meas_rep *mr)
+{
+	int i;
+
+	printf("\"NR\":%d", mr->nr);
+
+	if (mr->flags & MEAS_REP_F_DL_DTX)
+		printf(", \"DTXd\":true");
+
+	printf(", \"UL_MEAS\":{");
+	print_meas_rep_uni_json(&mr->ul);
+	printf("}");
+	printf(", \"BS_POWER\":%d", mr->bs_power);
+	if (mr->flags & MEAS_REP_F_MS_TO)
+		printf(", \"MS_TO\":%d", mr->ms_timing_offset);
+
+	if (mr->flags & MEAS_REP_F_MS_L1) {
+		printf(", \"L1_MS_PWR\":%d", mr->ms_l1.pwr);
+		printf(", \"L1_FPC\":%s",
+			mr->flags & MEAS_REP_F_FPC ? "true" : "false");
+		printf(", \"L1_TA\":%u", mr->ms_l1.ta);
+	}
+
+	if (mr->flags & MEAS_REP_F_UL_DTX)
+		printf(", \"DTXu\":true");
+	if (mr->flags & MEAS_REP_F_BA1)
+		printf(", \"BA1\":true");
+	if (mr->flags & MEAS_REP_F_DL_VALID) {
+		printf(", \"DL_MEAS\":{");
+		print_meas_rep_uni_json(&mr->dl);
+		printf("}");
+	}
+
+	if (mr->num_cell == 7)
+		return;
+	printf(", \"NUM_NEIGH\":%u, \"NEIGH\":[", mr->num_cell);
+	for (i = 0; i < mr->num_cell; i++) {
+		struct gsm_meas_rep_cell *mrc = &mr->cell[i];
+		if (i!=0) printf(", ");
+		printf("\"IDX\":%u, \"ARFCN\":%u, \"BSIC\":%u, \"POWER\":%d",
+			mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev));
+	}
+	printf("]");
+}
+
+static void print_meas_feed_json(struct meas_feed_meas *mfm)
+{
+	time_t now = time(NULL);
+
+	printf("{");
+	printf("\"time\":%ld, \"imsi\":\"%s\", \"name\":\"%s\", \"scenario\":\"%s\", ",
+		now, mfm->imsi, mfm->name, mfm->scenario);
+
+	printf("\"meas_rep\":{");
+	print_meas_rep_json(&mfm->mr);
+	printf("}");
+
+	printf("}\n");
+
+}
+
+static int handle_meas(struct msgb *msg)
+{
+	struct meas_feed_meas *mfm = (struct meas_feed_meas *) msgb_data(msg);
+
+	print_meas_feed_json(mfm);
+
+	return 0;
+}
+
+static int handle_msg(struct msgb *msg)
+{
+	struct meas_feed_hdr *mfh = (struct meas_feed_hdr *) msgb_data(msg);
+
+	if (mfh->version != MEAS_FEED_VERSION)
+		return -EINVAL;
+
+	switch (mfh->msg_type) {
+	case MEAS_FEED_MEAS:
+		handle_meas(msg);
+		break;
+	default:
+		break;
+	}
+}
+
+static int udp_fd_cb(struct osmo_fd *ofd, unsigned int what)
+{
+	int rc;
+
+	if (what & BSC_FD_READ) {
+		struct msgb *msg = msgb_alloc(1024, "UDP Rx");
+
+		rc = read(ofd->fd, msgb_data(msg), msgb_tailroom(msg));
+		if (rc < 0)
+			return rc;
+		msgb_put(msg, rc);
+		handle_msg(msg);
+		msgb_free(msg);
+	}
+
+	return 0;
+}
+
+int main(int argc, char **argv)
+{
+	int rc;
+	struct osmo_fd udp_ofd;
+
+	udp_ofd.cb = udp_fd_cb;
+	rc =  osmo_sock_init_ofd(&udp_ofd, AF_INET, SOCK_DGRAM, IPPROTO_UDP, NULL, 8888, OSMO_SOCK_F_BIND);
+	if (rc < 0)
+		exit(1);
+
+	while (1) {
+		osmo_select_main(0);
+	};
+
+	exit(0);
+}
-- 
1.9.1


