CI: github actions: add OpenTracing builds

let us add OpenTracing module to "all features" builds

.github/matrix.py

@@ -71,6 +71,10 @@ for CC in ["gcc", "clang"]:
             "CC": CC,
             "FLAGS": [
                 "USE_ZLIB=1",
+                "USE_OT=1",
+                "OT_INC=${HOME}/opt/include",
+                "OT_LIB=${HOME}/opt/lib",
+                "OT_RUNPATH=1",
                 "USE_PCRE=1",
                 "USE_PCRE_JIT=1",
                 "USE_LUA=1",
@@ -139,6 +143,10 @@ matrix.append(
         "FLAGS": get_asan_flags(CC)
         + [
             "USE_ZLIB=1",
+            "USE_OT=1",
+            "OT_INC=${HOME}/opt/include",
+            "OT_LIB=${HOME}/opt/lib",
+            "OT_RUNPATH=1",
             "USE_PCRE=1",
             "USE_PCRE_JIT=1",
             "USE_LUA=1",

.github/workflows/vtest.yml

@@ -64,6 +64,9 @@ jobs:
     - name: Install SSL ${{ matrix.ssl }}
       if: ${{ matrix.ssl && matrix.ssl != 'stock' }}
       run: env ${{ matrix.ssl }} scripts/build-ssl.sh
+    - name: Install OpenTracing libs
+      if: ${{ contains(matrix.FLAGS, 'USE_OT=1') }}
+      run: scripts/build-ot.sh
     - name: Build WURFL
       if: ${{ contains(matrix.FLAGS, 'USE_WURFL=1') }}
       run: make -C addons/wurfl/dummy

scripts/build-ot.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+#
+# OT helper. script built from documentation: https://github.com/haproxytech/opentracing-c-wrapper
+#
+
+set -e
+
+export OT_CPP_VERSION=1.5.0
+
+if [ ! -f "download-cache/v${OT_CPP_VERSION}.tar.gz" ]; then
+    wget -P download-cache/ \
+        "https://github.com/opentracing/opentracing-cpp/archive/v${OT_CPP_VERSION}.tar.gz"
+fi
+
+if [ "$(cat ${HOME}/opt/.ot-cpp-version)" != "${OT_CPP_VERSION}" ]; then
+    tar xf download-cache/v${OT_CPP_VERSION}.tar.gz
+    cd opentracing-cpp-${OT_CPP_VERSION}
+    mkdir build
+    cd build
+    cmake -DCMAKE_INSTALL_PREFIX=${HOME}/opt -DBUILD_STATIC_LIBS=OFF -DBUILD_MOCKTRACER=OFF -DBUILD_TESTING=OFF ..
+    make
+    make install
+    echo "${OT_CPP_VERSION}" > "${HOME}/opt/.ot-cpp-version"
+fi
+
+git clone https://github.com/haproxytech/opentracing-c-wrapper.git
+cd opentracing-c-wrapper
+ ./scripts/bootstrap
+ ./configure --prefix=${HOME}/opt --with-opentracing=${HOME}/opt
+ make
+ make install
+
+