forked from 0k/0k-charms
17 changed files with 212 additions and 32 deletions
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7cyclos/hooks/postgres_database-relation-joined
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6docuseal/hooks/postgres_database-relation-joined
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9etherpad/hooks/postgres_database-relation-joined
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11gitea/hooks/postgres_database-relation-joined
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6hedgedoc/hooks/postgres_database-relation-joined
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4keycloak/hooks/postgres_database-relation-joined
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9mattermost/hooks/postgres_database-relation-joined
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9odoo-tecnativa/hooks/postgres_database-relation-joined
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8onlyoffice/hooks/postgres_database-relation-joined
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11peertube/hooks/postgres_database-relation-joined
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46postgres-stub/README.org
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62postgres-stub/hooks/postgres_database-relation-joined
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29postgres-stub/lib/common
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7postgres-stub/metadata.yml
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4postgres/hooks/postgres_database-relation-joined
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6rallly/hooks/postgres_database-relation-joined
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10synapse/hooks/postgres_database-relation-joined
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# -*- ispell-local-dictionary: "english" -*- |
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* Description |
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=postgres-stub= allows you to declare an external =postgres= so that |
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your local services can connect to it. It assumes you have the host, |
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port of the external postgres access, and a login, password, and a |
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database (already created) to connect to. |
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For now, this stub can't manage an admin access to create database, and |
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more. This would be an easy addition thou. |
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This can be useful for instance if you have an external provider giving |
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you access to their postgres (use SSL then!), or in your private cloud, |
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or on the same host but not managed by docker, either directly on the host |
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or by other virtual services (LXC, VMWare...). |
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* Usage |
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You can declare a stub service by specifying at least the host of your |
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external =postgres= database. |
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#+begin_src yaml |
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my-postgres-stub: |
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charm: postgres-stub |
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options: |
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host: my-host.mydomain.fr:20432 |
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#+end_src |
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If you don't specify a port, then it'll be defaulted to ~5432~ |
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Any service that want to connect to this database could then: |
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#+begin_src yaml |
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myservice: |
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# ... |
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relations: |
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postgres-database: |
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postgres-stub: |
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my-postgres-stub: |
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dbname: my-db-name |
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user: my-username |
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password: my-p4s5w0rd |
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#+end_src |
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#!/bin/bash |
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## When writing relation script, remember: |
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## - they should be idempotents |
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## - they can be launched while the dockers is already up |
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## - they are launched from the host |
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## - the target of the link is launched first, and get a chance to ``relation-set`` |
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## - both side of the scripts get to use ``relation-get``. |
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DBNAME=$(relation-get dbname) || { |
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DBNAME="$BASE_SERVICE_NAME" |
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relation-set dbname "$DBNAME" |
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} |
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USER=$(relation-get user) || { |
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USER="$BASE_SERVICE_NAME" |
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relation-set user "$USER" |
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} |
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HOST=$(options-get host) || true |
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if [ -z "$HOST" ]; then |
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err "No host specified. Please specify ${WHITE}host${NORMAL}" \ |
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"in ${DARKYELLOW}$SERVICE_NAME${NORMAL}'s option." |
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exit 1 |
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fi |
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if [[ "$HOST" =~ :[0-9]+$ ]]; then |
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PORT="${HOST##*:}" |
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HOST="${HOST%:*}" |
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fi |
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if ! [[ "$HOST" =~ ^[0-9a-zA-Z.-]+$ ]]; then |
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err "Invalid host specified: '$HOST'. Please provide a valid" \ |
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"network target as ${WHITE}host${NORMAL} value" \ |
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"in ${DARKYELLOW}$SERVICE_NAME${NORMAL}'s option." |
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exit 1 |
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fi |
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PORT=${PORT:-5432} |
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relation-set host "$HOST" |
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relation-set port "$PORT" |
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. lib/common |
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set -e |
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if ! PASSWORD="$(relation-get password 2>/dev/null)"; then |
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err "Please provide a password" |
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exit 1 |
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fi |
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echo "SELECT 1;" | ddb "$DBNAME" || { |
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err "Connection failed to $DBNAME on $HOST:$PORT with user $USER and given password" |
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exit 1 |
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} |
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array_read-0 extensions < <(relation-get extensions 2>/dev/null | shyaml get-values-0) |
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if [ "${#extensions[@]}" -gt 0 ]; then |
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db_install_extensions "$DBNAME" "${extensions[@]}" || exit 1 |
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fi |
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# -*- mode: shell-script -*- |
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POSTGRES_IMAGE=docker.0k.io/postgres:12.15.0-myc |
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ddb () { |
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docker run --rm -i \ |
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-e PGPASSWORD="$PASSWORD" \ |
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-e PGHOST="$HOST" \ |
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-e PGUSER="$USER" \ |
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-e PGPORT="$PORT" \ |
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--entrypoint psql \ |
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"${POSTGRES_IMAGE}" \ |
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-qAt "$@" |
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} |
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## |
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## Entrypoints |
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## |
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db_install_extensions() { |
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local dbname="$1" |
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shift |
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for ext in "$@"; do |
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ddb -d "$dbname" < <(echo "CREATE EXTENSION IF NOT EXISTS $ext;") || return 1 |
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info "Installed $ext extension on database '$dbname'." |
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done |
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} |
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@ -0,0 +1,7 @@ |
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type: stub |
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provides: |
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postgres-database: |
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default-options: |
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host: ## Can contain a port specification (if not, port is 5432) |
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