Add automated license check to travis

.travis.yml

@@ -98,7 +98,7 @@ jobs:
     # This tests the formatting of a PR.
     - if: (type = pull_request) OR (type = cron) OR NOT (branch = master)
       stage: test
-      name: "pgindent"
+      name: "pgindent and license check"
       env:
         - PG_VERSION=10.2 PG_GIT_TAG=REL_10_2
       before_install:
@@ -112,6 +112,7 @@ jobs:
         - docker exec -it pgbuild /bin/bash -c 'cd /build/debug && make pgindent'
         - docker exec -it pgbuild /bin/bash -c 'diff -r -q /build/src /tmp/timescale_src'
         - docker exec -it pgbuild /bin/bash -c 'diff -r -q /build/test/src /tmp/timescale_test_src'
+        - docker exec -it pgbuild /bin/bash -c 'cd /build/debug && make licensecheck'
 
     - if: type = cron
       stage: test

CMakeLists.txt

@@ -300,3 +300,10 @@ endif (UNIX)
 add_subdirectory(test)
 add_subdirectory(sql)
 add_subdirectory(src)
+
+add_custom_target(licensecheck
+  SRC_DIR=${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/check_license_apache.sh -c ${CMAKE_CURRENT_SOURCE_DIR}/src
+  COMMAND SRC_DIR=${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/check_license_apache.sh -s ${CMAKE_CURRENT_SOURCE_DIR}/sql
+  COMMAND SRC_DIR=${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/check_license_apache.sh -c ${CMAKE_CURRENT_SOURCE_DIR}/test
+  COMMAND SRC_DIR=${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/check_license_apache.sh -t ${CMAKE_CURRENT_SOURCE_DIR}/test
+  USES_TERMINAL)

scripts/c_license_header.h

@@ -0,0 +1,6 @@
+/*
+ * Copyright (c) 2016-2018  Timescale, Inc. All Rights Reserved.
+ *
+ * This file is licensed under the Apache License,
+ * see LICENSE-APACHE at the top level directory.
+ */

scripts/check_file_license_apache.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+FLAG=${1}
+FILE=${2}
+SCRIPTPATH="$( cd "$(dirname "${0}")" ; pwd -P )"
+TIMESCALE_LOCATION=`dirname ${SCRIPTPATH}`
+
+LICENSE_FILE=
+LICENSE_STRING=
+FIRST_COMMENT=
+
+if [[ "${FLAG}" == '-c' ]]; then
+    LICENSE_FILE=${SCRIPTPATH}/c_license_header.h
+    LICENSE_STRING=`awk 'BEGIN {ORS="\0"}{if($1 == "*/") {print; exit;}} {print}' ${LICENSE_FILE}`
+    FIRST_COMMENT=`awk 'BEGIN {ORS="\0"}{if($1 == "*/") {print; exit;}} {print}' ${FILE}`
+elif [[ "${FLAG}" == '-s' ]]; then
+    LICENSE_FILE=${SCRIPTPATH}/sql_license.sql
+    LICENSE_STRING=`awk 'BEGIN {ORS="\0"}{if($1 == "") {print; exit;}} {print}' ${SCRIPTPATH}/sql_license.sql`
+    FIRST_COMMENT=`awk 'BEGIN {ORS="\0"}{if($1 == "") {print; exit;}} {print}' ${FILE}`
+elif [[ "${FLAG}" == '-t' ]]; then
+    LICENSE_FILE=${SCRIPTPATH}/test_license.sql
+    LICENSE_STRING=`awk 'BEGIN {ORS="\0"}{if($1 == "") {print; exit;}} {print}' ${SCRIPTPATH}/test_license.sql`
+    FIRST_COMMENT=`awk 'BEGIN {ORS="\0"}{if($1 == "") {print; exit;}} {print}' ${FILE}`
+else
+    echo "Unkown flag" ${1}
+    exit 1;
+fi
+
+if [[ "${FIRST_COMMENT}" != "${LICENSE_STRING}" ]]; then
+    echo ${FILE#"$TIMESCALE_LOCATION/"} "lacks a license header. Add";
+    echo
+    cat ${LICENSE_FILE}
+    echo
+    echo "to the top of the file";
+    exit 1;
+fi
+
+exit 0;

scripts/check_license_apache.sh

@@ -0,0 +1,24 @@
+#! /bin/bash
+
+SUFFIX0=
+SUFFIX1=
+
+if [[ ${1} == '-c' ]]; then
+SUFFIX0='*.c'
+SUFFIX1='*.h'
+else
+SUFFIX0='*.sql'
+SUFFIX1='*.sql'
+fi
+
+SCRIPT_DIR=$(dirname ${0})
+SRC_DIR=$(dirname ${SCRIPT_DIR})
+
+# we skip license checks for:
+#   - the update script fragments, because the generated update scripts will
+#     contain the license at top, and we don't want to repeat it in the middle
+#   - test/sql/dump which contains auto-generated code
+#   - src/chunk_adatptive since it's still in BETA
+
+find $2 -type f \( -name "${SUFFIX0}" -or -name "${SUFFIX1}" \) -and -not -path "${SRC_DIR}/sql/updates/*.sql" -and -not -path "${SRC_DIR}/test/sql/dump/*.sql" -and -not -path "${SRC_DIR}/src/chunk_adaptive.*" -print0 | xargs -0 -n1 $(dirname ${0})/check_file_license_apache.sh ${1}
+

scripts/sql_license.sql

@@ -0,0 +1,5 @@
+-- Copyright (c) 2016-2018  Timescale, Inc. All Rights Reserved.
+--
+-- This file is licensed under the Apache License, see LICENSE-APACHE
+-- at the top level directory of the timescaledb distribution.
+

scripts/test_license.sql

@@ -0,0 +1,5 @@
+-- Copyright (c) 2016-2018  Timescale, Inc. All Rights Reserved.
+--
+-- This file is licensed under the Apache License,
+-- see LICENSE-APACHE at the top level directory.
+