Enum StepCondition 

pub enum StepCondition {
    Always,
    OnPreviousSuccess,
    OnPreviousFailure,
    Expression(String),
    FieldEquals {
        field: String,
        value: String,
    },
    FieldContains {
        field: String,
        substring: String,
    },
    And(Vec<StepCondition>),
    Or(Vec<StepCondition>),
    Not(Box<StepCondition>),
}

A condition that gates whether a workflow step should execute.

Variants

Always

Always execute — the step is unconditional.

OnPreviousSuccess

Execute only when the immediately preceding step succeeded.

OnPreviousFailure

Execute only when the immediately preceding step failed.

Expression(String)

Evaluate a simple expression of the form "field op value".

Supported operators: >, <, ==, !=, >=, <=, contains.

FieldEquals

Execute when ctx.previous_output[field] == value.

Fields

field: String

Output field key.

value: String

Expected value.

FieldContains

Execute when ctx.previous_output[field] contains substring.

Fields

field: String

Output field key.

substring: String

Required substring.

And(Vec<StepCondition>)

All sub-conditions must be true (short-circuit).

Or(Vec<StepCondition>)

At least one sub-condition must be true (short-circuit).

Not(Box<StepCondition>)

Negation of the inner condition.

Implementations

impl StepCondition

pub fn parse(s: &str) -> Result<Self, String>

Parse a StepCondition from its string representation.

Supported forms:

• "always" → StepCondition::Always
• "on_success" / "on_previous_success" → StepCondition::OnPreviousSuccess
• "on_failure" / "on_previous_failure" → StepCondition::OnPreviousFailure
• "expr: <expression>" → StepCondition::Expression
• "field_equals: <field>=<value>" → StepCondition::FieldEquals
• "field_contains: <field>=<substring>" → StepCondition::FieldContains

Errors

Returns an error string for unrecognised or malformed input.

Trait Implementations

impl Clone for StepCondition

fn clone(&self) -> StepCondition

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StepCondition

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StepCondition

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for StepCondition

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.