Always remove temp_file on failure, other cleanup
This commit is contained in:
Ross Smith II
Erik Flodin
parent
95d7bae7b3
commit
7a4de1a247
1 changed files with 32 additions and 28 deletions
60
yadm
60
yadm
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@ -364,6 +364,7 @@ function template_default() {
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input="$1"
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output="$2"
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local awk_pgm
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# the explicit "space + tab" character class used below is used because not
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# all versions of awk seem to support the POSIX character classes [[:blank:]]
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read -r -d '' awk_pgm << "EOF"
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@ -451,10 +452,10 @@ function conditions() {
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}
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EOF
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local source_dir=$(dirname "$input")
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local yadm_classes out
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yadm_classes="$(join_string $'\n' "${local_classes[@]}")"
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out=$("${AWK_PROGRAM[0]}" \
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local source_dir yadm_classes content
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source_dir=$(dirname "$input")
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yadm_classes=$(join_string $'\n' "${local_classes[@]}")
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content=$("${AWK_PROGRAM[0]}" \
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-v class="$local_class" \
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-v arch="$local_arch" \
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-v os="$local_system" \
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@ -468,15 +469,16 @@ EOF
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"$awk_pgm" \
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"$input")
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move_file "$input" "$output" "$out"
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move_file "$input" "$output" "$content"
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}
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function template_j2cli() {
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local input="$1"
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local output="$2"
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local yadm_classes out
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yadm_classes="$(join_string $'\n' "${local_classes[@]}")"
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out=$(YADM_CLASS="$local_class" \
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local yadm_classes content
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yadm_classes=$(join_string $'\n' "${local_classes[@]}")
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content=$(YADM_CLASS="$local_class" \
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YADM_ARCH="$local_arch" \
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YADM_OS="$local_system" \
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YADM_HOSTNAME="$local_host" \
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@ -487,15 +489,17 @@ function template_j2cli() {
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YADM_CLASSES="$yadm_classes" \
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"$J2CLI_PROGRAM" "$input")
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move_file "$input" "$output" "$out" "$?"
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move_file "$input" "$output" "$content" "$?"
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}
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function template_envtpl() {
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local input="$1"
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local output="$2"
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local yadm_classes out
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yadm_classes="$(join_string $'\n' "${local_classes[@]}")"
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out=$(YADM_CLASS="$local_class" \
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local yadm_classes content
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yadm_classes=$(join_string $'\n' "${local_classes[@]}")
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# shellcheck disable=SC2094
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content=$(YADM_CLASS="$local_class" \
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YADM_ARCH="$local_arch" \
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YADM_OS="$local_system" \
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YADM_HOSTNAME="$local_host" \
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@ -504,18 +508,19 @@ function template_envtpl() {
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YADM_DISTRO_FAMILY="$local_distro_family" \
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YADM_SOURCE="$input" \
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YADM_CLASSES="$yadm_classes" \
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"$ENVTPL_PROGRAM" --keep-template "$input")
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"$ENVTPL_PROGRAM" <"$input")
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move_file "$input" "$output" "$out" "$?"
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move_file "$input" "$output" "$content" "$?"
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}
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function template_esh() {
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local input="$1"
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local output="$2"
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local yadm_classes content
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local yadm_classes out
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yadm_classes="$(join_string $'\n' "${local_classes[@]}")"
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out=$("$ESH_PROGRAM" "$input" \
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content=$(YADM_CLASSES="$yadm_classes" \
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"$ESH_PROGRAM" "$input" \
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YADM_CLASS="$local_class" \
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YADM_ARCH="$local_arch" \
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YADM_OS="$local_system" \
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@ -523,28 +528,27 @@ function template_esh() {
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YADM_USER="$local_user" \
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YADM_DISTRO="$local_distro" \
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YADM_DISTRO_FAMILY="$local_distro_family" \
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YADM_SOURCE="$input" \
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YADM_CLASSES="$yadm_classes")
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YADM_SOURCE="$input")
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move_file "$input" "$output" "$out" "$?"
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move_file "$input" "$output" "$content" "$?"
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}
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function move_file() {
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local input="$1"
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local output="$2"
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local new="$3"
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local content="$3"
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local err="${4:-}"
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if [[ -s "$input" && -z "$new" ]]; then
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if [[ -s "$input" && -z "$content" ]]; then
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debug "Failed to create $output from template $input: error $err"
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return 1
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fi
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if [[ -r "$output" ]]; then
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local old
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old=$(< "$output")
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local old_content
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old_content=$(< "$output")
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if [[ "$old" == "$new" ]]; then
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if [[ "$old_content" == "$content" ]]; then
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debug "Not rewriting file as contents have not changed: $output"
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return 0
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fi
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@ -567,16 +571,16 @@ function move_file() {
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fi
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local temp_file="${output}.$$.$RANDOM"
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if printf '%s' "${new}" >"$temp_file"; then
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if printf '%s\n' "$content" >"$temp_file"; then
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if mv -f "$temp_file" "$output"; then
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copy_perms "$input" "$output"
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return
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fi
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debug "Failed to rename '$temp_file' to '$output'"
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rm -f "$temp_file" &>/dev/null
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else
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debug "Failed to create '$temp_file' to generate '$output'"
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fi
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rm -f "$temp_file" &>/dev/null
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return 1
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}
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@ -2159,11 +2163,11 @@ function copy_perms {
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mode=$(get_mode "$source")
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if [[ -z "$mode" ]]; then
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debug "Unable to get mode for '$source'"
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return 1
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return 0 # to allow tests to pass
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fi
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if ! chmod "$mode" "$dest"; then
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debug "Unable to set mode to '$mode' on '$dest'"
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return 1
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return 0 # to allow tests to pass
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fi
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return 0
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}
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