From 9d279b99acae0689aff49954f369c5e113702740 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robert=20Paj=C4=85k?= <pellared@hotmail.com>
Date: Mon, 30 Sep 2024 10:38:27 +0200
Subject: [PATCH 1/2] Add verify_examples.sh

---
 Makefile           |  5 +++-
 RELEASING.md       | 11 +++++++
 get_main_pkgs.sh   | 30 +++++++++++++++++++
 tools/go.mod       |  5 +++-
 tools/go.sum       | 10 ++++++-
 tools/tools.go     |  1 +
 verify_examples.sh | 75 ++++++++++++++++++++++++++++++++++++++++++++++
 7 files changed, 134 insertions(+), 3 deletions(-)
 create mode 100755 get_main_pkgs.sh
 create mode 100755 verify_examples.sh

diff --git a/Makefile b/Makefile
index db1e210e98b..751a68f81ab 100644
--- a/Makefile
+++ b/Makefile
@@ -54,6 +54,9 @@ $(MULTIMOD): PACKAGE=go.opentelemetry.io/build-tools/multimod
 CROSSLINK = $(TOOLS)/crosslink
 $(CROSSLINK): PACKAGE=go.opentelemetry.io/build-tools/crosslink
 
+GOJQ = $(TOOLS)/gojq
+$(TOOLS)/gojq: PACKAGE=github.com/itchyny/gojq/cmd/gojq
+
 GOTMPL = $(TOOLS)/gotmpl
 $(GOTMPL): PACKAGE=go.opentelemetry.io/build-tools/gotmpl
 
@@ -66,7 +69,7 @@ $(GOJSONSCHEMA): PACKAGE=github.com/atombender/go-jsonschema
 GOVULNCHECK = $(TOOLS)/govulncheck
 $(GOVULNCHECK): PACKAGE=golang.org/x/vuln/cmd/govulncheck
 
-tools: $(GOLANGCI_LINT) $(MISSPELL) $(GOCOVMERGE) $(STRINGER) $(PORTO) $(MULTIMOD) $(CROSSLINK) $(GOTMPL) $(GORELEASE) $(GOJSONSCHEMA) $(GOVULNCHECK)
+tools: $(GOLANGCI_LINT) $(MISSPELL) $(GOCOVMERGE) $(STRINGER) $(PORTO) $(GOJQ) $(MULTIMOD) $(CROSSLINK) $(GOTMPL) $(GORELEASE) $(GOJSONSCHEMA) $(GOVULNCHECK)
 
 # Virtualized python tools via docker
 
diff --git a/RELEASING.md b/RELEASING.md
index a345df17546..6a2b107017e 100644
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -159,3 +159,14 @@ different module sets, be sure to use the stable release tag but be sure to
 include each version in the release title (i.e. `Release v1.0.0/v0.25.0`). The
 release body should include all the curated changes from the Changelog for this
 release.
+
+## Verify Examples
+
+After releasing verify that examples build outside of the repository.
+
+```sh
+./verify_examples.sh
+```
+
+The script copies examples into a different directory removes any `replace` declarations in `go.mod` and builds them.
+This ensures they build with the published release, not the local copy.
diff --git a/get_main_pkgs.sh b/get_main_pkgs.sh
new file mode 100755
index 00000000000..93e80ea306c
--- /dev/null
+++ b/get_main_pkgs.sh
@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+set -euo pipefail
+
+top_dir='.'
+if [[ $# -gt 0 ]]; then
+    top_dir="${1}"
+fi
+
+p=$(pwd)
+mod_dirs=()
+
+# Note `mapfile` does not exist in older bash versions:
+# https://stackoverflow.com/questions/41475261/need-alternative-to-readarray-mapfile-for-script-on-older-version-of-bash
+
+while IFS= read -r line; do
+    mod_dirs+=("$line")
+done < <(find "${top_dir}" -type f -name 'go.mod' -exec dirname {} \; | sort)
+
+for mod_dir in "${mod_dirs[@]}"; do
+    cd "${mod_dir}"
+
+    while IFS= read -r line; do
+        echo ".${line#${p}}"
+    done < <(go list --find -f '{{.Name}}|{{.Dir}}' ./... | grep '^main|' | cut -f 2- -d '|')
+    cd "${p}"
+done
diff --git a/tools/go.mod b/tools/go.mod
index 2115f6f8690..daafa0cbae1 100644
--- a/tools/go.mod
+++ b/tools/go.mod
@@ -8,6 +8,7 @@ require (
 	github.com/atombender/go-jsonschema v0.16.0
 	github.com/client9/misspell v0.3.4
 	github.com/golangci/golangci-lint v1.61.0
+	github.com/itchyny/gojq v0.12.16
 	github.com/jcchavezs/porto v0.6.0
 	github.com/wadey/gocovmerge v0.0.0-20160331181800-b5bfa59ec0ad
 	go.opentelemetry.io/build-tools/crosslink v0.14.0
@@ -103,6 +104,7 @@ require (
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/hexops/gotextdiff v1.0.3 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/itchyny/timefmt-go v0.1.6 // indirect
 	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
 	github.com/jgautheron/goconst v1.7.1 // indirect
 	github.com/jingyugao/rowserrcheck v1.1.1 // indirect
@@ -128,7 +130,7 @@ require (
 	github.com/matoous/godox v0.0.0-20230222163458-006bad1f9d26 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/mattn/go-runewidth v0.0.9 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
 	github.com/mgechev/revive v1.3.9 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/mitchellh/go-wordwrap v1.0.1 // indirect
@@ -153,6 +155,7 @@ require (
 	github.com/quasilyte/gogrep v0.5.0 // indirect
 	github.com/quasilyte/regex/syntax v0.0.0-20210819130434-b3f0c404a727 // indirect
 	github.com/quasilyte/stdinfo v0.0.0-20220114132959-f7386bf02567 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/ryancurrah/gomodguard v1.3.5 // indirect
 	github.com/ryanrolds/sqlclosecheck v0.5.1 // indirect
 	github.com/sagikazarmark/locafero v0.4.0 // indirect
diff --git a/tools/go.sum b/tools/go.sum
index 9503e15c06d..e8939da351e 100644
--- a/tools/go.sum
+++ b/tools/go.sum
@@ -228,6 +228,10 @@ github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUq
 github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/itchyny/gojq v0.12.16 h1:yLfgLxhIr/6sJNVmYfQjTIv0jGctu6/DgDoivmxTr7g=
+github.com/itchyny/gojq v0.12.16/go.mod h1:6abHbdC2uB9ogMS38XsErnfqJ94UlngIJGlRAIj4jTM=
+github.com/itchyny/timefmt-go v0.1.6 h1:ia3s54iciXDdzWzwaVKXZPbiXzxxnv1SPGFfM/myJ5Q=
+github.com/itchyny/timefmt-go v0.1.6/go.mod h1:RRDZYC5s9ErkjQvTvvU7keJjxUYzIISJGxm9/mAERQg=
 github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 h1:BQSFePA1RWJOlocH6Fxy8MmwDt+yVQYULKfN0RoTN8A=
 github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99/go.mod h1:1lJo3i6rXxKeerYnT8Nvf0QmHCRC1n8sfWVwXF2Frvo=
 github.com/jcchavezs/porto v0.6.0 h1:AgQLGwsXaxDkPj4Y+paFkVGLAR4n/1RRF0xV5UKinwg=
@@ -292,8 +296,9 @@ github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovk
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/mattn/go-runewidth v0.0.9 h1:Lm995f3rfxdpd6TSmuVCHVb/QhupuXlYr8sCI/QdE+0=
 github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
+github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mgechev/revive v1.3.9 h1:18Y3R4a2USSBF+QZKFQwVkBROUda7uoBlkEuBD+YD1A=
 github.com/mgechev/revive v1.3.9/go.mod h1:+uxEIr5UH0TjXWHTno3xh4u7eg6jDpXKzQccA9UGhHU=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
@@ -357,6 +362,9 @@ github.com/quasilyte/regex/syntax v0.0.0-20210819130434-b3f0c404a727 h1:TCg2WBOl
 github.com/quasilyte/regex/syntax v0.0.0-20210819130434-b3f0c404a727/go.mod h1:rlzQ04UMyJXu/aOvhd8qT+hvDrFpiwqp8MRXDY9szc0=
 github.com/quasilyte/stdinfo v0.0.0-20220114132959-f7386bf02567 h1:M8mH9eK4OUR4lu7Gd+PU1fV2/qnDNfzT635KRSObncs=
 github.com/quasilyte/stdinfo v0.0.0-20220114132959-f7386bf02567/go.mod h1:DWNGW8A4Y+GyBgPuaQJuWiy0XYftx4Xm/y5Jqk9I6VQ=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8=
 github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
diff --git a/tools/tools.go b/tools/tools.go
index 0c3d1c3fa2c..7af0b311cfd 100644
--- a/tools/tools.go
+++ b/tools/tools.go
@@ -10,6 +10,7 @@ import (
 	_ "github.com/atombender/go-jsonschema"
 	_ "github.com/client9/misspell/cmd/misspell"
 	_ "github.com/golangci/golangci-lint/cmd/golangci-lint"
+	_ "github.com/itchyny/gojq"
 	_ "github.com/jcchavezs/porto/cmd/porto"
 	_ "github.com/wadey/gocovmerge"
 	_ "go.opentelemetry.io/build-tools/crosslink"
diff --git a/verify_examples.sh b/verify_examples.sh
new file mode 100755
index 00000000000..234845563f0
--- /dev/null
+++ b/verify_examples.sh
@@ -0,0 +1,75 @@
+#!/bin/bash
+
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+set -euo pipefail
+
+cd $(dirname $0)
+TOOLS_DIR=$(pwd)/.tools
+GOPATH=$(go env GOPATH)
+
+# if [ -z "${GOPATH}" ] ; then
+# 	printf "GOPATH is not defined.\n"
+# 	exit -1
+# fi
+
+# if [ ! -d "${GOPATH}" ] ; then
+# 	printf "GOPATH ${GOPATH} is invalid \n"
+# 	exit -1
+# fi
+
+# # Pre-requisites
+# if ! git diff --quiet; then \
+# 	git status
+# 	printf "\n\nError: working tree is not clean\n"
+# 	exit -1
+# fi
+
+# if [ "$(git tag --contains $(git log -1 --pretty=format:"%H"))" = "" ] ; then
+# 	printf "$(git log -1)"
+# 	printf "\n\nError: HEAD is not pointing to a tagged version"
+# fi
+
+make ${TOOLS_DIR}/gojq
+
+DIR_TMP="${GOPATH}/src/oteltmp/"
+rm -rf $DIR_TMP
+mkdir -p $DIR_TMP
+
+printf "Copy examples to ${DIR_TMP}\n"
+cp -a ./examples ${DIR_TMP}
+
+# Update go.mod files
+printf "Update go.mod: rename module and remove replace\n"
+
+PACKAGE_DIRS=$(find . -mindepth 2 -type f -name 'go.mod' -exec dirname {} \; | egrep 'examples' | sed 's/^\.\///' | sort)
+
+for dir in $PACKAGE_DIRS; do
+	printf "  Update go.mod for $dir\n"
+	(cd "${DIR_TMP}/${dir}" && \
+	 # replaces is ("mod1" "mod2" …)
+	 replaces=($(go mod edit -json | ${TOOLS_DIR}/gojq '.Replace[].Old.Path' || true))
+	 # strip double quotes
+	 replaces=("${replaces[@]%\"}") && \
+	 replaces=("${replaces[@]#\"}") && \
+	 # make an array (-dropreplace=mod1 -dropreplace=mod2 …)
+	 dropreplaces=("${replaces[@]/#/-dropreplace=}") && \
+	 go mod edit -module "oteltmp/${dir}" "${dropreplaces[@]}" && \
+	 go mod tidy)
+done
+printf "Update done:\n\n"
+
+# Build directories that contain main package. These directories are different than
+# directories that contain go.mod files.
+printf "Build examples:\n"
+EXAMPLES=$(./get_main_pkgs.sh ./examples)
+for ex in $EXAMPLES; do
+	printf "  Build $ex in ${DIR_TMP}/${ex}\n"
+	(cd "${DIR_TMP}/${ex}" && \
+	 go build .)
+done
+
+# Cleanup
+printf "Remove copied files.\n"
+rm -rf $DIR_TMP

From 67d8ec1232a4ae428dedd814b2718afd48c8b620 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robert=20Paj=C4=85k?= <pellared@hotmail.com>
Date: Tue, 1 Oct 2024 15:36:57 +0200
Subject: [PATCH 2/2] Uncomment after testing

---
 verify_examples.sh | 36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/verify_examples.sh b/verify_examples.sh
index 234845563f0..944e5fd36c5 100755
--- a/verify_examples.sh
+++ b/verify_examples.sh
@@ -9,27 +9,27 @@ cd $(dirname $0)
 TOOLS_DIR=$(pwd)/.tools
 GOPATH=$(go env GOPATH)
 
-# if [ -z "${GOPATH}" ] ; then
-# 	printf "GOPATH is not defined.\n"
-# 	exit -1
-# fi
+if [ -z "${GOPATH}" ] ; then
+	printf "GOPATH is not defined.\n"
+	exit -1
+fi
 
-# if [ ! -d "${GOPATH}" ] ; then
-# 	printf "GOPATH ${GOPATH} is invalid \n"
-# 	exit -1
-# fi
+if [ ! -d "${GOPATH}" ] ; then
+	printf "GOPATH ${GOPATH} is invalid \n"
+	exit -1
+fi
 
-# # Pre-requisites
-# if ! git diff --quiet; then \
-# 	git status
-# 	printf "\n\nError: working tree is not clean\n"
-# 	exit -1
-# fi
+# Pre-requisites
+if ! git diff --quiet; then \
+	git status
+	printf "\n\nError: working tree is not clean\n"
+	exit -1
+fi
 
-# if [ "$(git tag --contains $(git log -1 --pretty=format:"%H"))" = "" ] ; then
-# 	printf "$(git log -1)"
-# 	printf "\n\nError: HEAD is not pointing to a tagged version"
-# fi
+if [ "$(git tag --contains $(git log -1 --pretty=format:"%H"))" = "" ] ; then
+	printf "$(git log -1)"
+	printf "\n\nError: HEAD is not pointing to a tagged version"
+fi
 
 make ${TOOLS_DIR}/gojq