Fix pg setup on Hosted Service

[DZakh]

Summary by CodeRabbit

• New Features

  • Added support for new networks: ChainwebTestnet20, ChainwebTestnet21, and Plume.
  • Improved schema initialization logic to optionally preserve existing empty PostgreSQL schemas.

• Improvements

  • Updated network categorization and tier classification to include new networks.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between 5fa2df0 and 444dfa9.

📒 Files selected for processing (1)

• codegenerator/cli/npm/envio/src/PgStorage.res (3 hunks)

"""

Walkthrough

This update introduces an option to reuse an existing empty PostgreSQL schema during initialization in the PgStorage module and integrates three new network variants into the Network enum in the chain_helpers module. The changes affect schema initialization logic and network categorization, including block threshold and tier assignment.

Changes

File(s)	Change Summary
codegenerator/cli/npm/envio/src/PgStorage.res	Added reuseExistingPgSchema parameter to schema initialization; logic updated to reuse empty schemas if present.
codegenerator/cli/src/config_parsing/chain_helpers.rs	Added ChainwebTestnet20, ChainwebTestnet21, and Plume to Network enum; updated block threshold and tier logic.

Sequence Diagram(s)

sequenceDiagram
    participant Caller
    participant PgStorage
    participant Postgres

    Caller->>PgStorage: make()
    PgStorage->>Postgres: Query schema table names
    PgStorage->>PgStorage: Check if schema is empty
    alt Schema is empty
        PgStorage->>PgStorage: Set reuseExistingPgSchema = true
    else Schema not empty
        PgStorage->>PgStorage: Set reuseExistingPgSchema = false
    end
    PgStorage->>PgStorage: makeInitializeTransaction(reuseExistingPgSchema)
    PgStorage->>Postgres: Run initialization transaction

Loading

Possibly related PRs

• Fix to use PG user from env variables #593: Both PRs modify makeInitializeTransaction in PgStorage, though this one adds schema reuse logic while the other adds a PostgreSQL user parameter.
• Improve Envio managed db schema logic #630: Both PRs update schema initialization logic in PgStorage, with this one adding schema reuse and the other focusing on stricter safety checks.

Suggested reviewers

• moose-code

Poem

In the warren of code, a schema anew,
Now can be kept if empty—how clever, how true!
Three new networks join the hop,
Chainweb twins and Plume on top.
With paws on the keys and whiskers that twitch,
This bunny says: “Migrations just got a switch!” 🐇
"""

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[moose-code]

lgtm