feat(CI): improve Travis configuration (#1486)

- use random DB names in order to detect statements which address a specific DB
- split compilation and DB check (DB check and dry run only have to run once)
- use separate shell scripts for easier module Travis integration

apps/ci/ci-before_install.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+if [ "$TRAVIS_BUILD_ID" = "1" ]
+then
+  export CCOMPILERC="clang-3.8"
+  export CCOMPILERCXX="clang++-3.8"
+
+  echo "set root password"
+  export DB_RND_NAME=$(cat /dev/urandom | tr -dc 'a-z' | fold -w 5 | head -n 1)
+  sudo mysql -e "use mysql; update user set authentication_string=PASSWORD('$DB_RND_NAME') where User='root'; update user set plugin='mysql_native_password';FLUSH PRIVILEGES;"
+  sudo mysql_upgrade -u root -p$DB_RND_NAME
+  sudo service mysql restart
+  printf "[client]\npassword=%s" "$DB_RND_NAME" >~/.my.cnf
+  chmod 400 ~/.my.cnf
+elif [ "$TRAVIS_BUILD_ID" = "2" ]
+then
+  export CCOMPILERC="clang-7"
+  export CCOMPILERCXX="clang++-7"
+
+  echo "add custom APT repository llvm-toolchain-xenial-7"
+  wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+  echo "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-7 main" | sudo tee -a /etc/apt/sources.list
+  sudo apt-get update -qq
+fi

apps/ci/ci-error-check.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+DB_ERRORS_FILE="/home/travis/build/azerothcore/azerothcore-wotlk/env/dist/bin/DBErrors.log";
+#DB_ERRORS_FILE="./env/dist/bin/DBErrors.log";
+
+if [[ ! -f ${DB_ERRORS_FILE} ]]; then
+    echo "File ${DB_ERRORS_FILE} not found!";
+    exit 1
+fi
+
+if [[ -s ${DB_ERRORS_FILE} ]]; then
+     printf "The DBErrors.log file contains startup errors:\n\n";
+     cat ${DB_ERRORS_FILE};
+     printf "\nPlease solve the startup errors listed above!\n";
+     exit 1;
+else
+     echo "No startup errors found in DBErrors.log, good job!";
+fi

apps/ci/ci-install.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+echo "install OS deps (apt-get)"
+bash ./acore.sh "install-deps"
+
+if [ "$TRAVIS_BUILD_ID" = "1" ]
+then
+  echo "install clang-3.8"
+  sudo apt-get install clang-3.8
+elif [ "$TRAVIS_BUILD_ID" = "2" ]
+then
+  echo "install clang-7"
+  sudo apt-get install clang-7
+fi
+
+echo "create config.sh"
+cat >>conf/config.sh <<CONFIG_SH
+CCOMPILERC=$CCOMPILERC
+CCOMPILERCXX=$CCOMPILERCXX
+MTHREADS=4
+CWARNINGS=ON
+CDEBUG=OFF
+CTYPE=Release
+CSCRIPTS=ON
+CSERVERS=ON
+CTOOLS=ON
+CSCRIPTPCH=OFF
+CCOREPCH=OFF
+CCUSTOMOPTIONS='-DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache -DCMAKE_C_FLAGS="-Werror" -DCMAKE_CXX_FLAGS="-Werror"'
+DB_CHARACTERS_CONF="MYSQL_USER='root'; MYSQL_PASS='$DB_RND_NAME'; MYSQL_HOST='localhost';"
+DB_AUTH_CONF="MYSQL_USER='root'; MYSQL_PASS='$DB_RND_NAME'; MYSQL_HOST='localhost';"
+DB_WORLD_CONF="MYSQL_USER='root'; MYSQL_PASS='$DB_RND_NAME'; MYSQL_HOST='localhost';"
+DB_AUTH_NAME=auth_$DB_RND_NAME
+DB_CHARACTERS_NAME=characters_$DB_RND_NAME
+DB_WORLD_NAME=world_$DB_RND_NAME
+CONFIG_SH
+
+if [ "$TRAVIS_BUILD_ID" = "1" ]
+then
+  echo "import DB"
+  bash ./acore.sh "db-assembler" "import-all"
+fi

apps/ci/ci-script.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+echo "compile core"
+export CCACHE_CPP2=true
+ccache -s
+timeout 2580 bash ./acore.sh "compiler" "all"
+ccache -s
+
+if [ "$TRAVIS_BUILD_ID" = "1" ]
+then
+  echo "start worldserver dry-run"
+  git clone --depth=1 --branch=master --single-branch https://github.com/ac-data/ac-data.git /home/travis/build/azerothcore/azerothcore-wotlk/env/dist/data
+  sed -e "s/;;acore_auth/;$DB_RND_NAME;auth_$DB_RND_NAME/" -e "s/;;acore_world/;$DB_RND_NAME;world_$DB_RND_NAME/" -e "s/;;acore_characters/;$DB_RND_NAME;characters_$DB_RND_NAME/" ./data/travis/worldserver.conf >./env/dist/etc/worldserver.conf
+  ./env/dist/bin/worldserver --dry-run
+  ./apps/ci/ci-error-check.sh
+fi