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9fde1ac351
The first attempt occasionally fails, probably due to a race with the listener's startup. Additionally, perform minor adjustments to the output written to stderr to ensure it is properly flushed in the CI environment.
68 lines
1.7 KiB
Bash
Executable File
68 lines
1.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -eu
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set -o pipefail
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source "$(dirname ${BASH_SOURCE[0]})/lib/testing.sh"
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cid_es="$(container_id elasticsearch)"
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cid_ls="$(container_id logstash)"
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cid_lsp="$(container_id logspout)"
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ip_es="$(service_ip elasticsearch)"
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ip_ls="$(service_ip logstash)"
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ip_lsp="$(service_ip logspout)"
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log 'Waiting for readiness of Elasticsearch'
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poll_ready "$cid_es" "http://${ip_es}:9200/" -u 'elastic:testpasswd'
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log 'Waiting for readiness of Logstash'
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poll_ready "$cid_ls" "http://${ip_ls}:9600/_node/pipelines/main?pretty"
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log 'Waiting for readiness of Logspout'
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poll_ready "$cid_lsp" "http://${ip_lsp}/health"
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# When Logspout starts, it prints the following log line:
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# 2021/01/07 16:14:52 # logspout v3.2.13-custom by gliderlabs
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#
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# which we expect to find by querying:
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# docker.image:"docker-elk_logspout" AND message:"logspout gliderlabs"~3
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#
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log 'Searching a log entry forwarded by Logspout'
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declare response
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declare -i count
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declare -i was_retried=0
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# retry for max 60s (30*2s)
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for _ in $(seq 1 30); do
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response="$(curl "http://${ip_es}:9200/logstash-*/_search?q=docker.image:%22docker-elk_logspout%22%20AND%20message:%22logspout%20gliderlabs%22~3&pretty" -s -u elastic:testpasswd)"
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set +u # prevent "unbound variable" if assigned value is not an integer
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count="$(jq -rn --argjson data "${response}" '$data.hits.total.value')"
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set -u
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if (( count > 0 )); then
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break
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fi
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was_retried=1
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echo -n 'x' >&2
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sleep 2
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done
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if ((was_retried)); then
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# flush stderr, important in non-interactive environments (CI)
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echo >&2
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fi
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echo "$response"
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# Logspout may restart if Logstash isn't ready yet, so we tolerate multiple
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# results
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if (( count == 0 )); then
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echo 'Expected at least 1 document'
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exit 1
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fi
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