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Gotenberg

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Gotenberg is a stateless API for converting various document formats into PDF files. For more information, see the Gotenberg documentation.

Supported versions Anchor to this heading

  • 8

You can select the major version. But the latest compatible minor version is applied automatically and can’t be overridden.

Patch versions are applied periodically for bug fixes and the like. When you deploy your app, you always get the latest available patches.

Relationship reference Anchor to this heading

For each service defined via a relationship to your application, Upsun automatically generates corresponding environment variables within your application container, in the $<RELATIONSHIP-NAME>_<SERVICE-PROPERTY> format.

Here is example information available through the service environment variables themselves, or through the PLATFORM_RELATIONSHIPS environment variable.

You can obtain the complete list of available service environment variables in your app container by running upsun ssh env.

Note that the information about the relationship can change when an app is redeployed or restarted or the relationship is changed. So your apps should only rely on the service environment variables directly rather than hard coding any values.

GOTENBERG_INSTANCE_IPS=["249.45.240.83"]
GOTENBERG_SCHEME=http
GOTENBERG_HOSTNAME=rssjaxyeoorjje6axcq35xu5gq.gotenberg.service._.eu-5.platformsh.site >}}
GOTENBERG_SERVICE=gotenberg
GOTENBERG_CLUSTER=p2f2xrzyq7a6k-main-bvxea6i
GOTENBERG_IP=169.254.137.3
GOTENBERG_TYPE=gotenberg:8
GOTENBERG_HOST=gotenberg.internal
GOTENBERG_PORT=3000
GOTENBERG_REL=http

For some advanced use cases, you can use the PLATFORM_RELATIONSHIPS environment variable. The structure of the PLATFORM_RELATIONSHIPS environment variable can be obtained by running upsun relationships in your terminal:

{
  "host": "gotenberg.internal",
  "hostname": "rssjaxyeoorjje6axcq35xu5gq.gotenberg.service._.eu-5.platformsh.site",
  "cluster": "p2f2xrzyq7a6k-main-bvxea6i",
  "service": "gotenberg",
  "rel": "http",
  "scheme": "http",
  "port": "3000",
  "type": "gotenberg:8",
  "instance_ips": [
    "249.45.240.83"
  ],
  "ip": "169.254.137.3",
  "url": "http://gotenberg.internal:3000"
}

Here is an example of how to gather PLATFORM_RELATIONSHIPS environment variable information in a .environment file:

.environment 
# Decode the built-in credentials object variable.
export RELATIONSHIPS_JSON="$(echo "$PLATFORM_RELATIONSHIPS" | base64 --decode)"

# Set environment variables for individual credentials.
export APP_GOTENBERG_HOST=="$(echo $RELATIONSHIPS_JSON | jq -r '.gotenberg[0].host')"

Usage example Anchor to this heading

1. Configure the service Anchor to this heading

To define the service, use the gotenberg type:

.upsun/config.yaml 
services:
  # The name of the service container. Must be unique within a project.
  <SERVICE_NAME>:
    type: gotenberg:<VERSION>

Note that changing the name of the service replaces it with a brand new service and all existing data is lost. Back up your data before changing the service.

2. Define the relationship Anchor to this heading

To define the relationship, use the http endpoint:

.upsun/config.yaml 
applications:
  # The name of the app container. Must be unique within a project.
  <APP_NAME>:
    # Relationships enable access from this app to a given service.
    # The example below shows simplified configuration leveraging a default service
    # (identified from the relationship name) and a default endpoint.
    # See the Application reference for all options for defining relationships and endpoints.
    relationships:
      <SERVICE_NAME>:

You can define <SERVICE_NAME> as you like, so long as it’s unique between all defined services and matches in both the application and services configuration.

.upsun/config.yaml 
applications:
  # The name of the app container. Must be unique within a project.
  <APP_NAME>:
    # Relationships enable access from this app to a given service.
    # The example below shows configuration with an explicitly set service name and endpoint.
    # See the Application reference for all options for defining relationships and endpoints.
    relationships:
      <RELATIONSHIP_NAME>:
        service: <SERVICE_NAME>
        endpoint: http

You can define <SERVICE_NAME> and <RELATIONSHIP_NAME> as you like, so long as it’s unique between all defined services and relationships and matches in both the application and services configuration.

With the above definition, Upsun uses the http endpoint, providing a relationship (the network address a service is accessible from) that is identical to the name of that service.

The http endpoint uses port 3000 by default.

Example configuration Anchor to this heading

.upsun/config.yaml 
applications:
  # The name of the app container. Must be unique within a project.
  myapp:
    # Relationships enable access from this app to a given service.
    # The example below shows simplified configuration leveraging a default service
    # (identified from the relationship name) and a default endpoint.
    # See the Application reference for all options for defining relationships and endpoints.
    relationships:
      gotenberg:
services:
  # The name of the service container. Must be unique within a project.
  gotenberg:
    type: gotenberg:8
.upsun/config.yaml 
applications:
  # The name of the app container. Must be unique within a project.
  myapp:
    # Relationships enable access from this app to a given service.
    # The example below shows configuration with an explicitly set service name and endpoint.
    # See the Application reference for all options for defining relationships and endpoints.
    relationships:
      gotenberg:
        service: gotenberg
        endpoint: http
services:
  # The name of the service container. Must be unique within a project.
  gotenberg:
    type: gotenberg:8

Generate a PDF using Gotenberg Anchor to this heading

As an example, to generate a PDF file of the Upsun website, run the following cURL command:

Terminal 
curl \
--request POST http://yduimhaby523ase4lju3qhimre.gotenberg8.service._.eu-3.platformsh.site/forms/chromium/convert/url \
--form url=https://upsun.com \
--form landscape=true \
--form marginTop=1 \
--form marginBottom=1 \
-o my.pdf