[taler-deployment] branch master updated: NLnet task 5 delivery, draft.

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The following commit(s) were added to refs/heads/master by this push:
     new 6144444  NLnet task 5 delivery, draft.
6144444 is described below

commit 6144444b239ecf57aaf8878d294bee007654c207
Author: MS <ms@taler.net>
AuthorDate: Mon Jul 24 10:42:15 2023 +0200

    NLnet task 5 delivery, draft.
---
 nlnet/task5/date-range/Dockerfile  | 13 +++++
 nlnet/task5/date-range/start.sh    | 19 ++++++++
 nlnet/task5/long-poll/Dockerfile   | 14 ++++++
 nlnet/task5/long-poll/start.sh     | 44 +++++++++++++++++
 nlnet/task5/performance/Dockerfile | 14 ++++++
 nlnet/task5/performance/start.sh   | 99 ++++++++++++++++++++++++++++++++++++++
 6 files changed, 203 insertions(+)

diff --git a/nlnet/task5/date-range/Dockerfile 
b/nlnet/task5/date-range/Dockerfile
new file mode 100644
index 0000000..c2a7353
--- /dev/null
+++ b/nlnet/task5/date-range/Dockerfile
@@ -0,0 +1,13 @@
+FROM debian:stable
+
+RUN apt-get update
+RUN apt-get install -y openjdk-17-jre git python3-pip curl jq sqlite3 
postgresql python3-requests python3-click sudo
+
+# Installation
+RUN git clone git://git.taler.net/libeufin
+WORKDIR /libeufin
+RUN git fetch && git checkout 4bc5f38f571a45d427f73813ec3846bf59413afa
+RUN ./bootstrap
+RUN ./configure --prefix=/usr/local
+RUN make install
+ENTRYPOINT ["/start.sh"]
diff --git a/nlnet/task5/date-range/start.sh b/nlnet/task5/date-range/start.sh
new file mode 100644
index 0000000..c7018ea
--- /dev/null
+++ b/nlnet/task5/date-range/start.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# Draft.
+
+# 0, setup and start services.
+libeufin-sandbox make-transaction $PARAMS
+# 1, set artificial time for the transaction at $PAST.
+# 2, retrieve the $PAST transaction via Nexus.
+libeufin-cli \
+  connections \
+    fetch-transactions \
+      --range-type=time-frame \
+      --start $START \
+      --end $END
+# 3, show ingested transactions, where only $PATH appears.
+libeufin-cli
+  accounts
+    list-payments
+      $OTHER_ARGS
diff --git a/nlnet/task5/long-poll/Dockerfile b/nlnet/task5/long-poll/Dockerfile
new file mode 100644
index 0000000..46eebdb
--- /dev/null
+++ b/nlnet/task5/long-poll/Dockerfile
@@ -0,0 +1,14 @@
+FROM debian:stable
+
+RUN apt-get update
+RUN apt-get install -y openjdk-17-jre git python3-pip curl jq sqlite3 
postgresql python3-requests python3-click sudo
+
+# Installation
+RUN git clone git://git.taler.net/libeufin
+WORKDIR /libeufin
+RUN git fetch && git checkout 4bc5f38f571a45d427f73813ec3846bf59413afa
+RUN ./bootstrap
+RUN ./configure --prefix=/usr/local
+RUN make install
+COPY start.sh /
+ENTRYPOINT ["/start.sh"]
diff --git a/nlnet/task5/long-poll/start.sh b/nlnet/task5/long-poll/start.sh
new file mode 100644
index 0000000..35edd9c
--- /dev/null
+++ b/nlnet/task5/long-poll/start.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+
+wire_transfer () {
+  /libeufin/cli/tests/wire-transfer.sh
+}
+
+(/libeufin/cli/tests/launch_services_with_xlibeufinbank.sh &> /dev/null) &
+# Wait Nexus to be online:
+OK="0"
+echo -n "Waiting for Nexus ..."
+for n in $(seq 1 100); do
+  echo -n "."
+  sleep 1
+  wget --timeout=1 \
+       --tries=3 \
+       --waitretry=0 \
+       -o /dev/null \
+       -O /dev/null \
+       http://localhost:5001 || continue
+  OK="1"
+  break
+done
+if [ "1" != "$OK" ]
+then
+  echo "Failed to launch services."
+  exit 1
+fi
+echo "OK"
+
+echo
+echo Services are online!  The following shell offers a 'wire-transfer.sh'
+echo command that wires money to Nexus 'test-user'.  Give it after having
+echo connected an HTTP client that long-polls to Nexus.
+echo
+
+cd /usr/bin/
+ln -s /libeufin/cli/tests/wire-transfer.sh
+bash
+
+# This command has 100 seconds long-polling.  It can be
+# used before the user create any wire transfer to 'test-user'
+# to show how those then actually make Neuxs respond to
+# the long-poller.
+# curl -v -u test-user:x 
"http://localhost:5001/facades/test-facade/taler-wire-gateway/history/incoming?delta=5&long_poll_ms=100000";
diff --git a/nlnet/task5/performance/Dockerfile 
b/nlnet/task5/performance/Dockerfile
new file mode 100644
index 0000000..46eebdb
--- /dev/null
+++ b/nlnet/task5/performance/Dockerfile
@@ -0,0 +1,14 @@
+FROM debian:stable
+
+RUN apt-get update
+RUN apt-get install -y openjdk-17-jre git python3-pip curl jq sqlite3 
postgresql python3-requests python3-click sudo
+
+# Installation
+RUN git clone git://git.taler.net/libeufin
+WORKDIR /libeufin
+RUN git fetch && git checkout 4bc5f38f571a45d427f73813ec3846bf59413afa
+RUN ./bootstrap
+RUN ./configure --prefix=/usr/local
+RUN make install
+COPY start.sh /
+ENTRYPOINT ["/start.sh"]
diff --git a/nlnet/task5/performance/start.sh b/nlnet/task5/performance/start.sh
new file mode 100644
index 0000000..317c52a
--- /dev/null
+++ b/nlnet/task5/performance/start.sh
@@ -0,0 +1,99 @@
+#!/bin/bash
+
+# This script shows, via runnuing the benchmark, how
+# the LibEuFin database connections are significantly
+# shorter than the benchmark total time.
+
+# For this reason, it can only be that LibEuFin opens
+# and closes many PostgreSQL connections, as it is required
+# by milestone #3.
+
+set -eux
+
+# Converts AA:BB:CC.DDD to milliseconds.
+convert_pg_time_to_ms () {
+  awk -F[.:] '{SECS=(60*60*$1)+(60*$2)+$3; MILLI=$4; 
TOTAL_MS=(SECS*1000)+MILLI; print TOTAL_MS}'
+}
+
+createdb talercheck
+
+prepare_and_run () {
+  (taler-unified-setup.sh \
+    -emwtns \
+    -c /exchange/src/benchmark/benchmark-cs.conf \
+    -u exchange-account-2 &> /check_ready.txt) &
+  
+  # Wait that the prep. went through.
+  echo -n Waiting the unified setup to complete..
+  READY="NO"
+  for i in `seq 100` true; do
+    if grep "<<READY>>" /check_ready.txt; then
+    READY="YES"
+    break
+    fi
+    echo -n "."; sleep 0.5
+  done
+  
+  if test $READY = "YES"; then
+    echo "DONE"
+  else
+    cat /check_ready.txt
+    echo FAIL
+    exit 1
+  fi
+  
+  NEXUS_PID=$(cat /libeufin-nexus.pid)
+  SANDBOX_PID=$(cat /libeufin-sandbox.pid)
+  
+  if test -z $NEXUS_PID; then
+    echo Could not find Nexus PID, failing.
+    exit 1
+  fi
+  
+  if test -z $SANDBOX_PID; then
+    echo Could not find Sandbox PID, failing.
+    exit 1
+  fi
+  
+  echo Running the benchmark..
+  taler-exchange-benchmark \
+    -c /exchange/src/benchmark/benchmark-cs.conf.edited \
+    -u exchange-account-2 \ # Which exchange account to pick from the config.
+    -L WARNING \
+    -n1 \ # How many coins per reserve.
+    -r100 # How many reserves per client.
+}
+
+/usr/bin/time -o /benchmark-wall-clock-time.txt --format=%e prepare_and_run
+
+# Convert the wall clock time to milliseconds, to make
+# it compatible with the format as GREPped through Postgres logs.
+BENCHMARK_TOT_MS=$(awk -F. '{t=($1 * 1000 + $2 * 10)} END {print t}' 
/benchmark-wall-clock-time.txt)
+
+NEXUS_LONGEST_DB_SESSION=$(grep disconnection < 
/var/log/postgresql/postgresql-14-main.log \
+  | grep $NEXUS_PID | convert_pg_time_to_ms | sort | head -1)
+
+SANDBOX_LONGEST_DB_SESSION=$(grep disconnection < 
/var/log/postgresql/postgresql-14-main.log \
+  | grep $SANDBOX_PID | convert_pg_time_to_ms | sort | head -1)
+
+if test $NEXUS_LONGEST_DB_SESSION -gt $BENCHMARK_TOT_MS; then
+  echo Nexus had a DB session longer than the benchmark itself, failing.
+  exit 1
+fi
+
+if test $SANDBOX_LONGEST_DB_SESSION -gt $BENCHMARK_TOT_MS; then
+  echo Sandbox had a DB session longer than the benchmark itself, failing.
+  exit 1
+fi
+
+NEXUS_TIME_FRACTION=$(echo "$BENCHMARK_TOT_MS / $NEXUS_LONGEST_DB_SESSION" | 
bc -lq)
+SANDBOX_TIME_FRACTION=$(echo "$BENCHMARK_TOT_MS / $SANDBOX_LONGEST_DB_SESSION" 
| bc -lq)
+
+# Here: the further from 1 the better.
+echo Nexus longest DB session is $NEXUS_TIME_FRACTION of the total benchmark 
time.
+echo Sandbox longest DB session is $SANDBOX_TIME_FRACTION of the total 
benchmark time.
+
+# Now show the total space occupied by the database.
+# Although that's a _total_ estimate, it'll anyhow show
+# that _also_ libeufin has reasonable data usage.
+echo "SELECT pg_size_pretty(pg_database_size('libeufincheck'))" | psql -d 
libeufincheck

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