dt-migration

Smartscape Migration Skill

This skill migrates Dynatrace classic and Gen2 entity-based DQL queries and query patterns to Smartscape-based equivalents.

Load the dt-dql-essentials skill before writing final DQL so the translated query also follows current DQL syntax rules.

This skill focuses on Smartscape-oriented DQL migration only. It does not cover asset-level migration workflows.

Query Purpose Classification

Start here. The correct migration strategy depends on what the query is actually trying to do — not just which classic constructs it uses.

There are three distinct situations:

Decision:

• Situations 1 or 2 — load references/mass-data-filtering-strategy.md and complete all steps including field discovery (Step 2) and equivalence verification (Step 4). Do not skip the fieldsSnapshot gates — they determine which approach is viable. Only fall back to the Migration Workflow below when the entity-type mapping or relationship traversal is needed to complete a Smartscape subquery.
• Situation 3 — continue with the Migration Workflow and entity mapping table below.

Note: Situation 3 has a sub-case where classicEntitySelector is used to filter the entities returned by fetch dt.entity.*. This is rare and follows the same smartscapeNodes path — resolve the selector conditions using references/mass-data-filtering-strategy.md Step 1B, then apply them as node filters in smartscapeNodes.

Migration Workflow

Follow this order for Situation 3 (pure entity list queries) and for constructing Smartscape subqueries in Situations 1 and 2:

1. Identify the classic input pattern:
   • fetch dt.entity.*
   • classicEntitySelector(...)
   • relationship field access such as belongs_to[...], runs[...], instance_of[...]
   • signal or event queries using dt.entity.*
2. Identify the involved classic entity types.
3. Look up the Smartscape replacement in the core entity mapping table below.
4. Check which classic DQL constructs need explicit migration.
5. Rewrite the query using Smartscape primitives:
   • smartscapeNodes
   • smartscapeEdges
   • traverse
   • references
   • getNodeName()
   • getNodeField()
6. Check for special cases, unsupported entities, or ID assumptions.
7. Load the matching detailed references for the specific entity family or migration pattern.

For the full migration process and output expectations, load references/migration-workflow.md.

Core Entity Mapping Table

Use this compact table first for common migrations. For the full mapping set, load references/type-mappings.md.

DQL Constructs to Inspect During Migration

These classic constructs usually need explicit rewriting:

For the detailed function-by-function guide, load references/dql-function-migration.md.

Special Cases

Do not translate these patterns literally:

• Host group — no standalone Smartscape entity; use fields on HOST
• Process group — no standalone Smartscape entity; use fields on PROCESS
• Container group — no standalone Smartscape entity; preserve output shape with placeholders if needed
• Classic IDs — classic entity IDs do not carry over to Smartscape automatically
• Planned, missing, or not-planned mappings — check the full mapping table before assuming direct support

Load references/special-cases.md before migrating these patterns.

Entity-Focused Guides

When a migration centers on a specific entity family, load the matching detailed guide:

• references/entity-host.md
• references/entity-service.md
• references/entity-process.md
• references/entity-container.md
• references/entity-kubernetes.md
• references/entity-cloud-application.md

Each guide explains:

• what the classic entity represented
• what the Smartscape replacement is
• which fields usually change
• how relationships are migrated
• common examples and pitfalls

References

• references/README.md — Reference index and reading guide
• references/mass-data-filtering-strategy.md — Start here for Situations 1 and 2. Mandatory steps: resolve conditions, run fieldsSnapshot discovery, select approach, write query, verify equivalence
• references/auto-tagging-field-mapping.md — Maps auto-tagging rule condition keys to semantic dictionary fields (mass data and Smartscape node attributes)
• references/entity-selector-predicates.md — Full predicate vocabulary for classicEntitySelector expressions
• references/migration-workflow.md — End-to-end migration process and output expectations
• references/type-mappings.md — Full classic-to-Smartscape type and field mappings
• references/dql-function-migration.md — How to migrate classic DQL functions and patterns
• references/relationship-mappings.md — Valid Smartscape edges and traversal guidance
• references/special-cases.md — Non-literal and unsupported entity migrations
• references/quick-reference.md — Compact rules and gotchas
• references/examples.md — Before/after migration examples