1#!/bin/bash
2
3# Copyright 2018 Datawire. All rights reserved.
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9# http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License
16
17# THE DEFAULT BOOT SEQUENCE IS NOW entrypoint.go. HOWEVER, we'll stick
18# with entrypoint.sh when the --dev-magic parameter is present. This
19# is currently used only for test_scout.py. This is a BRUTAL HACK.
20
21if [ "$1" != "--dev-magic" ]; then
22 exec busyambassador entrypoint "$@" # See comment above.
23fi
24
25DEVMAGIC=yes
26
27# If we are here, define AMBASSADOR_FAST_RECONFIGURE, to make
28# _absolutely certain_ that diagd's localhost checks are in sync with
29# what's actually running...
30export AMBASSADOR_FAST_RECONFIGURE=false
31
32ENTRYPOINT_DEBUG=
33
34log () {
35 local now
36
37 now=$(date +"%Y-%m-%d %H:%M:%S")
38 echo "${now} AMBASSADOR INFO ${@}" >&2
39}
40
41debug () {
42 local now
43
44 if [ -n "$ENTRYPOINT_DEBUG" ]; then
45 now=$(date +"%Y-%m-%d %H:%M:%S")
46 echo "${now} AMBASSADOR DEBUG ${@}" >&2
47 fi
48}
49
50wait_for_url () {
51 local name url tries_left delay status
52
53 name="$1"
54 url="$2"
55
56 tries_left=10
57 delay=1
58
59 while (( tries_left > 0 )); do
60 debug "pinging $name ($tries_left)..."
61
62 status=$(curl -s -o /dev/null -w "%{http_code}" $url)
63
64 if [ "$status" = "200" ]; then
65 break
66 fi
67
68 tries_left=$(( tries_left - 1 ))
69 sleep $delay
70 delay=$(( delay * 2 ))
71 if (( delay > 10 )); then delay=5; fi
72 done
73
74 if (( tries_left <= 0 )); then
75 log "giving up on $name and hoping for the best..."
76 else
77 log "$name running"
78 fi
79}
80
81################################################################################
82# CONFIG PARSING #
83################################################################################
84
85ambassador_root="/ambassador"
86
87export LC_ALL=C.UTF-8
88export LANG=C.UTF-8
89
90# If we have an AGENT_SERVICE, but no AMBASSADOR_ID, force AMBASSADOR_ID
91# from the AGENT_SERVICE.
92
93if [ -z "$AMBASSADOR_ID" -a -n "$AGENT_SERVICE" ]; then
94 export AMBASSADOR_ID="intercept-${AGENT_SERVICE}"
95 log "Intercept: set AMBASSADOR_ID to $AMBASSADOR_ID"
96fi
97
98export AMBASSADOR_NAMESPACE="${AMBASSADOR_NAMESPACE:-default}"
99export AMBASSADOR_CONFIG_BASE_DIR="${AMBASSADOR_CONFIG_BASE_DIR:-$ambassador_root}"
100export ENVOY_DIR="${AMBASSADOR_CONFIG_BASE_DIR}/envoy"
101export ENVOY_BOOTSTRAP_FILE="${AMBASSADOR_CONFIG_BASE_DIR}/bootstrap-ads.json"
102export ENVOY_BASE_ID="${AMBASSADOR_ENVOY_BASE_ID:-0}"
103
104export APPDIR="${APPDIR:-$ambassador_root}"
105
106# If we don't set PYTHON_EGG_CACHE explicitly, /.cache is set by
107# default, which fails when running as a non-privileged user
108export PYTHON_EGG_CACHE="${PYTHON_EGG_CACHE:-$AMBASSADOR_CONFIG_BASE_DIR}/.cache"
109export PYTHONUNBUFFERED=true
110
111log "running with dev magic"
112diagd --dev-magic
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