chore(NODE-3552): test serverless behind a loadbalancer (#2997)

.evergreen/config.yml

@@ -146,12 +146,26 @@ functions:
           ${PREPARE_SHELL}
           # Disable xtrace (just in case it was accidentally set).
           set +x
-          MONGODB_URI="${MONGODB_URI}" \
-          MONGODB_API_VERSION="${MONGODB_API_VERSION}" \
-          AUTH="auth" SSL="ssl" SERVERLESS=1 \
-          SERVERLESS_ATLAS_USER="${SERVERLESS_ATLAS_USER}" \
-          SERVERLESS_ATLAS_PASSWORD="${SERVERLESS_ATLAS_PASSWORD}" \
-            bash ${PROJECT_DIRECTORY}/.evergreen/run-serverless-tests.sh
+
+          export MONGODB_API_VERSION="${MONGODB_API_VERSION}"
+          export AUTH="auth"
+          export SSL="ssl"
+          export SERVERLESS="1"
+          export SERVERLESS_ATLAS_USER="${SERVERLESS_ATLAS_USER}"
+          export SERVERLESS_ATLAS_PASSWORD="${SERVERLESS_ATLAS_PASSWORD}"
+
+          export SINGLE_ATLASPROXY_SERVERLESS_URI="${SINGLE_ATLASPROXY_SERVERLESS_URI}"
+          export MULTI_ATLASPROXY_SERVERLESS_URI="${MULTI_ATLASPROXY_SERVERLESS_URI}"
+
+          export MONGODB_URI="${SINGLE_ATLASPROXY_SERVERLESS_URI}"
+          export SINGLE_MONGOS_LB_URI="${SINGLE_ATLASPROXY_SERVERLESS_URI}"
+
+          # Setting MULTI_MONGOS to the SINGLE_ATLAS is intentional
+          # LB tests pick one host out of the comma separated list
+          # so just passing the one host is equivalent
+          export MULTI_MONGOS_LB_URI="${SINGLE_ATLASPROXY_SERVERLESS_URI}"
+
+          bash ${PROJECT_DIRECTORY}/.evergreen/run-serverless-tests.sh
   start-load-balancer:
     - command: shell.exec
       params:
@@ -615,11 +629,11 @@ functions:
         working_dir: src
         timeout_secs: 60
         env:
-          MONGODB_URI: '${MONGODB_URI}'
-          PROJECT_DIRECTORY: '${PROJECT_DIRECTORY}'
+          MONGODB_URI: ${MONGODB_URI}
+          PROJECT_DIRECTORY: ${PROJECT_DIRECTORY}
         binary: bash
         args:
-          - '${PROJECT_DIRECTORY}/.evergreen/run-snappy-version-test.sh'
+          - ${PROJECT_DIRECTORY}/.evergreen/run-snappy-version-test.sh
   run bson-ext test:
     - command: shell.exec
       type: test
@@ -1737,6 +1751,7 @@ task_groups:
           script: |
             ${PREPARE_SHELL}
             set +o xtrace
+            LOADBALANCED=ON \
             SERVERLESS_DRIVERS_GROUP=${SERVERLESS_DRIVERS_GROUP} \
             SERVERLESS_API_PUBLIC_KEY=${SERVERLESS_API_PUBLIC_KEY} \
             SERVERLESS_API_PRIVATE_KEY=${SERVERLESS_API_PRIVATE_KEY} \

.evergreen/config.yml.in

@@ -167,12 +167,26 @@ functions:
           ${PREPARE_SHELL}
           # Disable xtrace (just in case it was accidentally set).
           set +x
-          MONGODB_URI="${MONGODB_URI}" \
-          MONGODB_API_VERSION="${MONGODB_API_VERSION}" \
-          AUTH="auth" SSL="ssl" SERVERLESS=1 \
-          SERVERLESS_ATLAS_USER="${SERVERLESS_ATLAS_USER}" \
-          SERVERLESS_ATLAS_PASSWORD="${SERVERLESS_ATLAS_PASSWORD}" \
-            bash ${PROJECT_DIRECTORY}/.evergreen/run-serverless-tests.sh
+
+          export MONGODB_API_VERSION="${MONGODB_API_VERSION}"
+          export AUTH="auth"
+          export SSL="ssl"
+          export SERVERLESS="1"
+          export SERVERLESS_ATLAS_USER="${SERVERLESS_ATLAS_USER}"
+          export SERVERLESS_ATLAS_PASSWORD="${SERVERLESS_ATLAS_PASSWORD}"
+
+          export SINGLE_ATLASPROXY_SERVERLESS_URI="${SINGLE_ATLASPROXY_SERVERLESS_URI}"
+          export MULTI_ATLASPROXY_SERVERLESS_URI="${MULTI_ATLASPROXY_SERVERLESS_URI}"
+
+          export MONGODB_URI="${SINGLE_ATLASPROXY_SERVERLESS_URI}"
+          export SINGLE_MONGOS_LB_URI="${SINGLE_ATLASPROXY_SERVERLESS_URI}"
+
+          # Setting MULTI_MONGOS to the SINGLE_ATLAS is intentional
+          # LB tests pick one host out of the comma separated list
+          # so just passing the one host is equivalent
+          export MULTI_MONGOS_LB_URI="${SINGLE_ATLASPROXY_SERVERLESS_URI}"
+
+          bash ${PROJECT_DIRECTORY}/.evergreen/run-serverless-tests.sh
 
   "start-load-balancer":
     - command: shell.exec
@@ -698,6 +712,7 @@ task_groups:
           script: |
             ${PREPARE_SHELL}
             set +o xtrace
+            LOADBALANCED=ON \
             SERVERLESS_DRIVERS_GROUP=${SERVERLESS_DRIVERS_GROUP} \
             SERVERLESS_API_PUBLIC_KEY=${SERVERLESS_API_PUBLIC_KEY} \
             SERVERLESS_API_PRIVATE_KEY=${SERVERLESS_API_PRIVATE_KEY} \

.evergreen/generate_evergreen_tasks.js

@@ -618,8 +618,8 @@ BUILD_VARIANTS.push({
   tasks: ['serverless_task_group']
 });
 
-const fileData = yaml.safeLoad(fs.readFileSync(`${__dirname}/config.yml.in`, 'utf8'));
+const fileData = yaml.load(fs.readFileSync(`${__dirname}/config.yml.in`, 'utf8'));
 fileData.tasks = (fileData.tasks || []).concat(BASE_TASKS).concat(TASKS).concat(SINGLETON_TASKS);
 fileData.buildvariants = (fileData.buildvariants || []).concat(BUILD_VARIANTS);
 
-fs.writeFileSync(`${__dirname}/config.yml`, yaml.safeDump(fileData, { lineWidth: 120 }), 'utf8');
+fs.writeFileSync(`${__dirname}/config.yml`, yaml.dump(fileData, { lineWidth: 120 }), 'utf8');

.evergreen/run-checks.sh

@@ -3,6 +3,19 @@ set -o errexit # Exit the script with error if any of the commands fail
 
 source "${PROJECT_DIRECTORY}/.evergreen/init-nvm.sh"
 
+# Attempt to update our EVG config
+# if it changes, crash so that any gen script changes are forced to be run before pushing
+set +o xtrace
+echo "Running evergreen config generation, expecting no changes..."
+npm run build:evergreen
+if ! git diff --exit-code ./.evergreen/config.yml; then
+    echo "Detected .evergreen/config.yml not up to date"
+    echo "Make sure to run: node .evergreen/generate_evergreen_tasks.js"
+    exit 1
+fi
+set -o xtrace
+
+## Checks typescript, eslint, and prettier
 npm run check:lint
 
 npm run check:unit

.evergreen/run-serverless-tests.sh

@@ -1,13 +1,21 @@
-#!/bin/bash
+#!/usr/bin/env bash
+
 source "${PROJECT_DIRECTORY}/.evergreen/install-dependencies.sh"
 
-SERVERLESS_ATLAS_USER="${SERVERLESS_ATLAS_USER}" \
-SERVERLESS_ATLAS_PASSWORD="${SERVERLESS_ATLAS_PASSWORD}" \
-SERVERLESS=1 AUTH=auth SSL=ssl \
-MONGODB_URI=${MONGODB_URI} npx mocha \
+if [ -z ${SERVERLESS+omitted} ]; then echo "SERVERLESS is unset" && exit 1; fi
+if [ -z ${MULTI_ATLASPROXY_SERVERLESS_URI+omitted} ]; then echo "MULTI_ATLASPROXY_SERVERLESS_URI is unset" && exit 1; fi
+if [ -z ${SINGLE_ATLASPROXY_SERVERLESS_URI+omitted} ]; then echo "SINGLE_ATLASPROXY_SERVERLESS_URI is unset" && exit 1; fi
+if [ -z ${SINGLE_MONGOS_LB_URI+omitted} ]; then echo "SINGLE_MONGOS_LB_URI is unset" && exit 1; fi
+if [ -z ${MULTI_MONGOS_LB_URI+omitted} ]; then echo "MULTI_MONGOS_LB_URI is unset" && exit 1; fi
+if [ -z ${MONGODB_URI+omitted} ]; then echo "MONGODB_URI is unset" && exit 1; fi
+if [ -z ${SERVERLESS_ATLAS_USER+omitted} ]; then echo "SERVERLESS_ATLAS_USER is unset" && exit 1; fi
+if [ -z ${SERVERLESS_ATLAS_PASSWORD+omitted} ]; then echo "SERVERLESS_ATLAS_PASSWORD is unset" && exit 1; fi
+
+npx mocha --file test/tools/runner/index.js \
   test/functional/crud_spec.test.js \
   test/functional/retryable_reads.test.js \
   test/functional/retryable_writes.test.js \
   test/functional/sessions.test.js \
   test/functional/transactions.test.js \
-  test/functional/versioned-api.test.js
+  test/functional/versioned-api.test.js \
+  test/functional/load-balancer-spec.test.js

.gitignore

@@ -60,3 +60,5 @@ lib/
 
 .vscode
 output
+
+serverless-expansion.yml

CONTRIBUTORS.md

@@ -51,11 +51,11 @@
 - Senmiao Liu
 - heroic
 - gitfy
+- Eric Adum
 
 ## Maintainers
 
 - Neal Beeken <<neal.beeken@mongodb.com>>
-- Eric Adum <<eric.adum@mongodb.com>>
 - Durran Jordan <<durran@gmail.com>>
 - Daria Pardue <<daria.pardue@mongodb.com>>