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authortv <tv@shackspace.de>2015-05-21 01:56:08 +0200
committertv <tv@shackspace.de>2015-05-21 01:56:08 +0200
commit36670f3e1cccad579b994a29320eeb8e287803b7 (patch)
tree484cb2c1075cdcabe8020ca40704f4d68f2b2fed /lib/prelude.sh
parentb95a514bcced00af77ae4adab77326dba9ab4c36 (diff)
sh: functions -> bin/
Diffstat (limited to 'lib/prelude.sh')
-rw-r--r--lib/prelude.sh261
1 files changed, 0 insertions, 261 deletions
diff --git a/lib/prelude.sh b/lib/prelude.sh
deleted file mode 100644
index 2adfb5651..000000000
--- a/lib/prelude.sh
+++ /dev/null
@@ -1,261 +0,0 @@
-# clone_or_update : [user@]hostname x local_dir x git_url x git_rev -> ()
-clone_or_update() {(
- target=$1
- nixpkgs_dir=$2
- git_url=$3
- git_rev=$4
-
- echo '
- set -euf
-
- if [ ! -d "$nixpkgs_dir" ]; then
- mkdir -p "$nixpkgs_dir"
- fi
-
- cd "$nixpkgs_dir"
-
- git init -q
-
- if ! current_url=$(git config remote.src.url); then
- git remote add src "$git_url"
- elif [ $current_url != $git_url ]; then
- git remote set-url src "$git_url"
- fi
-
- git fetch src
-
- git checkout "$git_rev"
- ' \
- | ssh "$target" env \
- nixpkgs_dir="$nixpkgs_dir" \
- git_rev="$git_rev" \
- git_url="$git_url" \
- /bin/sh
-)}
-
-# deploy : nixos-config x [user@]hostname -> ()
-deploy() {(
- main=$1
- target=$2
- nixpkgs_dir=/var/nixpkgs # TODO make configurable
-
- git_url=$(nixpkgs_url $main)
- git_rev=$(nixpkgs_rev $main)
-
- if [ "$git_url" = '' ] || [ "$git_rev" = '' ]; then
- echo "specify nixpkgs.url and nixpkgs.rev in $main !"
- exit 23
- fi
-
- filter=$(rsync_filter "$main")
-
- echo "$filter" \
- | rsync -f '. -' -zvrlptD --delete-excluded ./ "$target":/etc/nixos/
-
- clone_or_update "$target" "$nixpkgs_dir" "$git_url" "$git_rev"
- ssh "$target" nixos-rebuild switch \
- -I nixos-config=/etc/nixos/"$main" \
- -I nixpkgs="$nixpkgs_dir" \
- -I secrets=/etc/nixos/secrets \
-)}
-
-# rsync_filter : nixos-config -> rsync-filter
-rsync_filter() {(
- main=$1
-
- hosts=$(list_hosts)
- module_imports=$(set -euf; list_module_imports "$main")
- other_imports=$(
- echo "$module_imports" \
- | xargs grep -H . \
- | import_statements \
- | slash_path_relpath \
- | undot_paths \
- | sort \
- | uniq \
- | sed '/\.nix$/!s:$:/default.nix:' \
- )
- secrets=$(echo "$module_imports" | xargs cat | quoted_strings | filter_secrets)
-
- # TODO collect all other paths from *_imports
-
- abs_deps=$(
- echo "$hosts"
- echo "$module_imports"
- echo "$other_imports"
- echo "$secrets"
- )
-
- rel_deps=$(echo "$abs_deps" | make_relative_to "$PWD")
- filter=$(echo "$rel_deps" | make_rsync_whitelist)
-
- echo "$filter"
-)}
-
-# list_module_imports : nix-file -> lines nix-file
-list_module_imports() {
- if echo "$1" | grep -q ^/; then
- :
- else
- set -- "./$1"
- fi
- imports=$(nix-instantiate \
- -I secrets=secrets \
- --strict \
- --json \
- --eval \
- -E \
- "with builtins; with import ./lib/modules.nix; map toString (list-imports $1)")
- echo "$imports" \
- | jq -r .[]
-}
-
-# list_hosts : lines tinc-host-file
-# Precondition: $PWD/hosts is the correct repository :)
-list_hosts() {
- git -C hosts ls-tree --name-only HEAD \
- | awk '{print ENVIRON["PWD"]"/hosts/"$$0}'
-}
-
-# filter_secrets : lines string |> lines secrets-file-candidate
-# Notice how false positives are possible.
-filter_secrets() {
- sed -n 's:^\(.*/\)\?\(secrets/.*\):'"${PWD//:/\\:}"'/\2:p'
-}
-
-# import_statements : lines (path ":" string) |> lines (path ":" relpath)
-import_statements() {
- sed -n '
- s@^\([^:]\+:\)\('"$(bre_invert_word import)"'\)*\<import\s\+@\1@
- t1;d
- :1; s@^\([^:]\+:\)\(\.*/\S*\)@\1\2\n@
- t2;d
- :2; P;D
- '
-}
-
-# slash_path_relpath : lines (path ":" relpath) |> lines path
-#
-# Example: "/foo/bar: baz" => "/foo/baz"
-#
-slash_path_relpath() {
- sed -n 's@/[^/]\+:@/@p'
-}
-
-# undot_paths : lines path |> lines path
-# Remove all dots (. and ..) from input paths.
-undot_paths() {
- sed '
- :0
- s://\+:/:g
- s:/\.\(/\|$\):\1:g
- s:/[^/]\+/\.\.\(/\|$\):\1:g
- s:^/\(\.\./\)\+:/:
- t0
- s:^$:/:
- '
-}
-
-# quoted_strings : lines string |> lines string
-# Extract all (double-) quoted strings from stdin.
-#
-# 0. find begin of string or skip line
-# 1. find end of string or skip line
-# 2. print string and continue after string
-quoted_strings() {
- sed '
- s:[^"]*":: ;t1;d
- :1; s:\(\([^"]\|\\"\)*\)":\1\n: ;t2;d
- :2; P;D
- ' \
- | sed 's:\\":":g'
-}
-
-# bre_escape : lines string |> lines bre-escaped-string
-bre_escape() {
- sed 's:[\.\[\\\*\^\$]:\\&:g'
-}
-
-# bre_invert_word : string -> BRE
-# TODO escape chars in the resulting BRE.
-bre_invert_word() {
- awk -v input="$1" '
- BEGIN {
- split(input,s,"")
- for (i in s) {
- c=s[i]
- printf "\\|%s[^%s]", y, c
- y = y c
- }
- }
- '
-}
-
-# ls_bre : directory -> BRE
-# Create a BRE from the files in a directory.
-ls_bre() {
- ls "$1" \
- | tr \\n / \
- | sed '
- s:[\.\[\\\*\^\$]:\\&:g
- s:/$::
- s:/:\\|:g
- '
-}
-
-# make_relative_to : lines path |> directory -> lines path
-# Non-matching paths won't get altered.
-make_relative_to() {
- sed "s:^$(echo "$1/" | bre_escape | sed 's/:/\\:/g')::"
-}
-
-# make_rsync_whitelist : lines relpath |> liens rsync-filter
-make_rsync_whitelist() {
- set -- "$(cat)"
-
- # include all files in stdin and their directories
- {
- echo "$1"
- echo "$1" | make_parent_dirs | sort | uniq
- } \
- | sed 's|^|+ /|'
-
- # exclude everything else
- echo '- *'
-}
-
-# make_parent_dirs : lines path |> lines directory
-# List all parent directories of a path.
-make_parent_dirs() {
- set -- "$(sed -n 's|/[^/]*$||p' | grep . | sort | uniq)"
- if echo "$1" | grep -q .; then
- echo "$1"
- echo "$1" | make_parent_dirs
- fi
-}
-
-# nixpkgs_url : nixos-config -> git_url
-nixpkgs_url() {
- nix-instantiate \
- -I nixos-config="$1" \
- --eval \
- --json \
- -E '(import <nixos-config> {config={}; pkgs={};}).nixpkgs.url' 2> /dev/null \
- | jq -r .
-}
-
-# nixpkgs_rev : nixos-config -> git_rev
-nixpkgs_rev() {
- nix-instantiate \
- -I nixos-config="$1" \
- --eval \
- --json \
- -E '(import <nixos-config> {config={}; pkgs={};}).nixpkgs.rev' 2> /dev/null \
- | jq -r . 2> /dev/null
-}
-
-# verbose COMMAND [ARGS...]
-verbose() {
- echo "$@" >&2
- "$@"
-}