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Always remove temp_file on failure, other cleanup

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Ross Smith II 2023-10-12 07:58:10 -07:00
parent 95d7bae7b3
commit 1fba041aa7
1 changed files with 26 additions and 23 deletions
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49
yadm
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@ -364,6 +364,7 @@ function template_default() {
input="$1"
output="$2"
local awk_pgm
# the explicit "space + tab" character class used below is used because not
# all versions of awk seem to support the POSIX character classes [[:blank:]]
read -r -d '' awk_pgm << "EOF"
@ -451,10 +452,10 @@ function conditions() {
}
EOF
local source_dir=$(dirname "$input")
local yadm_classes out
yadm_classes="$(join_string $'\n' "${local_classes[@]}")"
out=$("${AWK_PROGRAM[0]}" \
local source_dir yadm_classes content
source_dir=$(dirname "$input")
yadm_classes=$(join_string $'\n' "${local_classes[@]}")
content=$("${AWK_PROGRAM[0]}" \
-v class="$local_class" \
-v arch="$local_arch" \
-v os="$local_system" \
@ -468,15 +469,16 @@ EOF
"$awk_pgm" \
"$input")
move_file "$input" "$output" "$out"
move_file "$input" "$output" "$content"
}
function template_j2cli() {
local input="$1"
local output="$2"
local yadm_classes out
yadm_classes="$(join_string $'\n' "${local_classes[@]}")"
out=$(YADM_CLASS="$local_class" \
local yadm_classes content
yadm_classes=$(join_string $'\n' "${local_classes[@]}")
content=$(YADM_CLASS="$local_class" \
YADM_ARCH="$local_arch" \
YADM_OS="$local_system" \
YADM_HOSTNAME="$local_host" \
@ -487,15 +489,16 @@ function template_j2cli() {
YADM_CLASSES="$yadm_classes" \
"$J2CLI_PROGRAM" "$input")
move_file "$input" "$output" "$out" "$?"
move_file "$input" "$output" "$content" "$?"
}
function template_envtpl() {
local input="$1"
local output="$2"
local yadm_classes out
yadm_classes="$(join_string $'\n' "${local_classes[@]}")"
out=$(YADM_CLASS="$local_class" \
local yadm_classes content
yadm_classes=$(join_string $'\n' "${local_classes[@]}")
content=$(YADM_CLASS="$local_class" \
YADM_ARCH="$local_arch" \
YADM_OS="$local_system" \
YADM_HOSTNAME="$local_host" \
@ -506,16 +509,16 @@ function template_envtpl() {
YADM_CLASSES="$yadm_classes" \
"$ENVTPL_PROGRAM" --keep-template "$input")
move_file "$input" "$output" "$out" "$?"
move_file "$input" "$output" "$content" "$?"
}
function template_esh() {
local input="$1"
local output="$2"
local yadm_classes content
local yadm_classes out
yadm_classes="$(join_string $'\n' "${local_classes[@]}")"
out=$("$ESH_PROGRAM" "$input" \
content=$("$ESH_PROGRAM" "$input" \
YADM_CLASS="$local_class" \
YADM_ARCH="$local_arch" \
YADM_OS="$local_system" \
@ -526,25 +529,25 @@ function template_esh() {
YADM_SOURCE="$input" \
YADM_CLASSES="$yadm_classes")
move_file "$input" "$output" "$out" "$?"
move_file "$input" "$output" "$content" "$?"
}
function move_file() {
local input="$1"
local output="$2"
local new="$3"
local content="$3"
local err="${4:-}"
if [[ -s "$input" && -z "$new" ]]; then
if [[ -s "$input" && -z "$content" ]]; then
debug "Failed to create $output from template $input: error $err"
return 1
fi
if [[ -r "$output" ]]; then
local old
old=$(< "$output")
local old_content
old_content=$(< "$output")
if [[ "$old" == "$new" ]]; then
if [[ "$old_content" == "$content" ]]; then
debug "Not rewriting file as contents have not changed: $output"
return 0
fi
@ -567,16 +570,16 @@ function move_file() {
fi
local temp_file="${output}.$$.$RANDOM"
if printf '%s' "${new}" >"$temp_file"; then
if printf '%s' "$content" >"$temp_file"; then
if mv -f "$temp_file" "$output"; then
copy_perms "$input" "$output"
return
fi
debug "Failed to rename '$temp_file' to '$output'"
rm -f "$temp_file" &>/dev/null
else
debug "Failed to create '$temp_file' to generate '$output'"
fi
rm -f "$temp_file" &>/dev/null
return 1
}