Initial PoC

4 files changed, 90 insertions, 0 deletions

diff --git a/lib/datetime.sh b/lib/datetime.sh
new file mode 100644
index 0000000..7f67a49
--- /dev/null
+++ b/lib/datetime.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+# date_iso_utc
+date_now_iso_utc() {
+  TZ=GMT date +"%Y-%m-%dT%H:%M:%SZ"
+}
+
+posix_time_microseconds() {
+  bc -e "($(perl -MTime::HiRes=gettimeofday -MPOSIX=strftime -e '($s,$us) = gettimeofday(); printf "%d.%06d\n", $s, $us') * 1000)" | cut -d '.' -f 1
+}
diff --git a/lib/dependencies.sh b/lib/dependencies.sh
new file mode 100644
index 0000000..bb86be3
--- /dev/null
+++ b/lib/dependencies.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env sh
+
+ensure_command_exists() {
+  _cmd=$1
+  _ret=0
+  if [ -z "${_cmd}" ]; then
+    _execution_error error=missing_argument function=ensure_command_exists argument=cmd
+  fi
+  if ! which "$1" > /dev/null 2>&1; then
+    _execution_error error=missing_dependency dependency="${_cmd}"
+  fi
+}
diff --git a/lib/identifiers.sh b/lib/identifiers.sh
new file mode 100644
index 0000000..cc7bc01
--- /dev/null
+++ b/lib/identifiers.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env sh
+
+# make_random_identifier [SIZE=32]
+# Generate a random alphanumeric identifier using `/dev/urandom`.
+# id=$(make_random_identifier)
+# id=$(make_random_identifier 64)
+make_random_identifier() {
+  _size="${1:-32}"
+  </dev/urandom env LC_CTYPE=C tr -dc "[:alnum:]" | head -c "$_size"
+}
diff --git a/lib/os.sh b/lib/os.sh
new file mode 100644
index 0000000..211bfaa
--- /dev/null
+++ b/lib/os.sh
@@ -0,0 +1,58 @@
+#!/usr/bin/env sh
+set -e
+
+export JSON_OS=
+
+if [ -f /etc/os-release ]; then
+  . /etc/os-release
+  _os_type="${NAME}"
+  _os_name="${ID}"
+  _os_pretty_name="${PRETTY_NAME}"
+  _os_version="${VERSION}"
+  _os_version_id="${VERSION_ID}"
+  _os_supported=1
+else
+  uname=$(uname | tr '[:upper:]' '[:lower:]')
+  case "${uname}" in
+    darwin)
+      _os_type="macos"
+      >&2 echo "${0}: error: macos not done yet!"
+      exit 1;;
+   *)
+      _os_type="${uname}"
+      >&2 echo "cloyster/os_detect.sh: error: unknown operating system: '${uname}'"
+  esac
+fi
+
+_m=$(uname -m)
+case "${_m}" in
+x86_64) _os_machine=amd64;;
+i*86) _os_machine=x86;;
+*)
+  _os_machine="${_m}"
+    ;;
+esac
+
+JSON_OS=$(jo -d. \
+  "os.supported@${_os_supported}" \
+   "os.type=${_os_type}" \
+   "os.name=${_os_name}" \
+   "os.pretty_name=${_os_pretty_name}" \
+   "os.version=${_os_version}" \
+   "os.version_id=${_os_version_id}" \
+   "os.machine=${_os_machine}")
+
+# os_get KEY|jq [JQ_QUERY]
+os_get() {
+  _key="${1}"
+  if [ -z "${1}" ]; then
+    _key=".os"
+  elif [ "${1}" = "jq" ] && [ -n "${2}" ]; then
+    _key="${2}"
+  else
+    _key=".os.${_key}"
+  fi
+  value="$(echo ${JSON_OS} | jq -r "${_key}")"
+  if [ "${value}" = "null" ]; then value=; fi
+  echo "${value}"
+}