Struct TemplateInstruction 

pub struct TemplateInstruction { /* private fields */ }

A full template-engine instruction (feature templates) — minijinja (Jinja2 syntax: conditionals, loops, filters) over the session state, mirroring ADK’s use_jinja2 instructions. The whole state is exposed as state (subscript prefixed keys: {{ state["session:turn_count"] }}), and every key that is a bare identifier is also available at top level ({{ name }}). Falls back to the empty string for missing values under Jinja’s default undefined semantics.

let inst = TemplateInstruction::new(
    "You are a support agent.\n\
     {% if state[\"derived:risk\"] and state[\"derived:risk\"] > 0.8 %}\
     Escalate carefully and show extra empathy.{% endif %}",
)?;
LlmTextAgent::new("support", llm).instruction_provider(inst);

Implementations

impl TemplateInstruction

pub fn new(source: impl Into<String>) -> Result<Self, String>

Compile-check the template now so errors surface at build time, not on the first model request.

Trait Implementations

impl InstructionProvider for TemplateInstruction

Available on crate feature templates only.

fn provide(&self, state: &State) -> String

Produce the system instruction for the current request.