Add Database ValueFrom

[japan4415]

Close #7

What I changed

• Modified values.yaml to allow valueFrom to pull values from existing Secrets.
• Added a process in the helper to create a single ValueFrom JSON that consolidates existing values and Secrets created from the PostgreSQL helm, among others.
  • For details, please refer to the diagram below.

flowchart TD
    subgraph langfuse
        F["Deployment"]
        subgraph values
            subgraph postgresql
                subgraph auth
                    subgraph username
                        F(("ValueFrom(DATABASE_USERNAME)"))
                        G(("Value(DATABASE_USERNAME)"))
                    end
                    subgraph password
                        A(("ValueFrom(DATABASE_PASSWORD)"))
                        B(("Value(DATABASE_PASSWORD)"))
                    end
                end
                C["Secret"]
                H["ConfigMap"]
            end
        end
        subgraph helper
            J(("Value(DATABASE_USERNAME)"))
            E(("Value(DATABASE_PASSWORD)"))
        end
        I["Deployment"]
    end
    subgraph postgres
        D["Secret"]
    end

    A --> E
    B --> C
    C --> E
    D --> E
    G --> H
    H --> J
    F --> J

    E --> I
    J --> I

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[CLAassistant]

All committers have signed the CLA.

[aschaber1]

Hey @japan4415, looks pretty cool, could you maybe also add the alternative way of using DATABASE_URL instead of DATABASE_HOST, DATABASE_USERNAME, DATABASE_PASSWORD and DATABASE_NAME?

Source: https://langfuse.com/docs/deployment/self-host#configuring-environment-variables

[mautini]

I think this one is not necessary with {{- if (not .Values.langfuse.nextauth.secret.valueFrom) }} at the beginning of the file

[mautini]

This is not necessary with {{- if (not .Values.langfuse.nextauth.url.valueFrom) }} (l.1)

[mautini]

Useless with {{- if (not .Values.langfuse.salt.valueFrom) }} at the top?

[mautini]

Regarding the changes, especially the non retro-compatibility introduced in values.yaml and semver specs, it needs a major bump

[mautini]

Added comments. It seems to be a great addition but break retro-compatibility

[japan4415]

so sorry i missed notification from github
ill continue writing fix from today