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478 lines
14 KiB
Rust
478 lines
14 KiB
Rust
use std::collections::HashMap;
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use std::fmt;
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use std::sync::Arc;
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use buildkit_proto::pb::{self, op::Op, OpMetadata, SourceOp};
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use lazy_static::*;
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use regex::Regex;
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use crate::ops::{OperationBuilder, SingleBorrowedOutput, SingleOwnedOutput};
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use crate::serialization::{Context, Node, Operation, OperationId, Result};
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use crate::utils::{OperationOutput, OutputIdx};
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#[derive(Debug)]
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pub struct ImageSource {
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id: OperationId,
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domain: Option<String>,
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name: String,
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tag: Option<String>,
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digest: Option<String>,
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description: HashMap<String, String>,
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ignore_cache: bool,
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resolve_mode: Option<ResolveMode>,
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}
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#[derive(Debug, Clone, Copy)]
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pub enum ResolveMode {
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Default,
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ForcePull,
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PreferLocal,
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}
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impl fmt::Display for ResolveMode {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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match self {
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ResolveMode::Default => write!(f, "default"),
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ResolveMode::ForcePull => write!(f, "pull"),
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ResolveMode::PreferLocal => write!(f, "local"),
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}
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}
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}
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impl Default for ResolveMode {
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fn default() -> Self {
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ResolveMode::Default
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}
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}
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lazy_static! {
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static ref TAG_EXPR: Regex = Regex::new(r":[\w][\w.-]+$").unwrap();
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}
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impl ImageSource {
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// The implementation is based on:
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// https://github.com/containerd/containerd/blob/614c0858f2a8db9ee0c788a9164870069f3e53ed/reference/docker/reference.go
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pub(crate) fn new<S>(name: S) -> Self
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where
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S: Into<String>,
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{
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let mut name = name.into();
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let (digest, digest_separator) = match name.find('@') {
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Some(pos) => (Some(name[pos + 1..].into()), pos),
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None => (None, name.len()),
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};
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name.truncate(digest_separator);
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let (tag, tag_separator) = match TAG_EXPR.find(&name) {
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Some(found) => (Some(name[found.start() + 1..].into()), found.start()),
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None => (None, name.len()),
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};
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name.truncate(tag_separator);
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let (domain, mut name) = match name.find('/') {
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// The input has canonical-like format.
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Some(separator_pos) if &name[..separator_pos] == "docker.io" => {
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(None, name[separator_pos + 1..].into())
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}
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// Special case when domain is "localhost".
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Some(separator_pos) if &name[..separator_pos] == "localhost" => {
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(Some("localhost".into()), name[separator_pos + 1..].into())
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}
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// General case for a common domain.
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Some(separator_pos) if name[..separator_pos].find('.').is_some() => (
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Some(name[..separator_pos].into()),
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name[separator_pos + 1..].into(),
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),
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// General case for a domain with port number.
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Some(separator_pos) if name[..separator_pos].find(':').is_some() => (
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Some(name[..separator_pos].into()),
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name[separator_pos + 1..].into(),
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),
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// Fallback if the first component is not a domain name.
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Some(_) => (None, name),
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// Fallback if only single url component present.
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None => (None, name),
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};
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if domain.is_none() && name.find('/').is_none() {
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name = format!("library/{}", name);
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}
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Self {
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id: OperationId::default(),
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domain,
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name,
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tag,
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digest,
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description: Default::default(),
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ignore_cache: false,
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resolve_mode: None,
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}
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}
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pub fn with_resolve_mode(mut self, mode: ResolveMode) -> Self {
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self.resolve_mode = Some(mode);
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self
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}
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pub fn resolve_mode(&self) -> Option<ResolveMode> {
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self.resolve_mode
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}
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pub fn with_digest<S>(mut self, digest: S) -> Self
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where
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S: Into<String>,
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{
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self.digest = Some(digest.into());
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self
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}
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pub fn with_tag<S>(mut self, tag: S) -> Self
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where
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S: Into<String>,
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{
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self.tag = Some(tag.into());
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self
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}
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pub fn canonical_name(&self) -> String {
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let domain = match self.domain {
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Some(ref domain) => domain,
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None => "docker.io",
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};
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let tag = match self.tag {
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Some(ref tag) => tag,
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None => "latest",
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};
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match self.digest {
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Some(ref digest) => format!("{}/{}:{}@{}", domain, self.name, tag, digest),
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None => format!("{}/{}:{}", domain, self.name, tag),
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}
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}
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}
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impl<'a> SingleBorrowedOutput<'a> for ImageSource {
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fn output(&'a self) -> OperationOutput<'a> {
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OperationOutput::borrowed(self, OutputIdx(0))
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}
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}
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impl<'a> SingleOwnedOutput<'static> for Arc<ImageSource> {
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fn output(&self) -> OperationOutput<'static> {
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OperationOutput::owned(self.clone(), OutputIdx(0))
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}
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}
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impl OperationBuilder<'static> for ImageSource {
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fn custom_name<S>(mut self, name: S) -> Self
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where
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S: Into<String>,
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{
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self.description
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.insert("llb.customname".into(), name.into());
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self
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}
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fn ignore_cache(mut self, ignore: bool) -> Self {
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self.ignore_cache = ignore;
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self
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}
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}
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impl Operation for ImageSource {
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fn id(&self) -> &OperationId {
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&self.id
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}
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fn serialize(&self, _: &mut Context) -> Result<Node> {
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let mut attrs = HashMap::default();
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if let Some(ref mode) = self.resolve_mode {
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attrs.insert("image.resolvemode".into(), mode.to_string());
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}
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let head = pb::Op {
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op: Some(Op::Source(SourceOp {
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identifier: format!("docker-image://{}", self.canonical_name()),
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attrs,
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})),
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..Default::default()
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};
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let metadata = OpMetadata {
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description: self.description.clone(),
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ignore_cache: self.ignore_cache,
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..Default::default()
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};
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Ok(Node::new(head, metadata))
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}
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}
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#[test]
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fn serialization() {
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crate::check_op!(
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ImageSource::new("rustlang/rust:nightly"),
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|digest| { "sha256:dee2a3d7dd482dd8098ba543ff1dcb01efd29fcd16fdb0979ef556f38564543a" },
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|description| { vec![] },
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|caps| { vec![] },
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|cached_tail| { vec![] },
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|inputs| { vec![] },
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|op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/rustlang/rust:nightly".into(),
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attrs: Default::default(),
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})
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},
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);
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crate::check_op!(
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ImageSource::new("library/alpine:latest"),
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|digest| { "sha256:0e6b31ceed3e6dc542018f35a53a0e857e6a188453d32a2a5bbe7aa2971c1220" },
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|description| { vec![] },
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|caps| { vec![] },
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|cached_tail| { vec![] },
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|inputs| { vec![] },
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|op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/library/alpine:latest".into(),
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attrs: Default::default(),
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})
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},
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);
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crate::check_op!(
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ImageSource::new("rustlang/rust:nightly").custom_name("image custom name"),
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|digest| { "sha256:dee2a3d7dd482dd8098ba543ff1dcb01efd29fcd16fdb0979ef556f38564543a" },
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|description| { vec![("llb.customname", "image custom name")] },
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|caps| { vec![] },
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|cached_tail| { vec![] },
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|inputs| { vec![] },
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|op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/rustlang/rust:nightly".into(),
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attrs: Default::default(),
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})
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},
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);
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crate::check_op!(
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ImageSource::new("rustlang/rust:nightly").with_digest("sha256:123456"),
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|digest| { "sha256:a9837e26998d165e7b6433f8d40b36d259905295860fcbbc62bbce75a6c991c6" },
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|description| { vec![] },
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|caps| { vec![] },
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|cached_tail| { vec![] },
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|inputs| { vec![] },
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|op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/rustlang/rust:nightly@sha256:123456".into(),
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attrs: Default::default(),
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})
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},
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);
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}
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#[test]
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fn resolve_mode() {
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crate::check_op!(
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ImageSource::new("rustlang/rust:nightly").with_resolve_mode(ResolveMode::Default),
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|digest| { "sha256:792e246751e84b9a5e40c28900d70771a07e8cc920c1039cdddfc6bf69256dfe" },
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|description| { vec![] },
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|caps| { vec![] },
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|cached_tail| { vec![] },
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|inputs| { vec![] },
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|op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/rustlang/rust:nightly".into(),
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attrs: crate::utils::test::to_map(vec![("image.resolvemode", "default")]),
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})
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},
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);
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crate::check_op!(
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ImageSource::new("rustlang/rust:nightly").with_resolve_mode(ResolveMode::ForcePull),
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|digest| { "sha256:0bd920010eab701bdce44c61d220e6943d56d3fb9a9fa4e773fc060c0d746122" },
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|description| { vec![] },
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|caps| { vec![] },
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|cached_tail| { vec![] },
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|inputs| { vec![] },
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|op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/rustlang/rust:nightly".into(),
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attrs: crate::utils::test::to_map(vec![("image.resolvemode", "pull")]),
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})
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},
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);
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crate::check_op!(
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ImageSource::new("rustlang/rust:nightly").with_resolve_mode(ResolveMode::PreferLocal),
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|digest| { "sha256:bd6797c8644d2663b29c36a8b3b63931e539be44ede5e56aca2da4f35f241f18" },
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|description| { vec![] },
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|caps| { vec![] },
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|cached_tail| { vec![] },
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|inputs| { vec![] },
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|op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/rustlang/rust:nightly".into(),
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attrs: crate::utils::test::to_map(vec![("image.resolvemode", "local")]),
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})
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},
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);
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}
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#[test]
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fn image_name() {
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crate::check_op!(ImageSource::new("rustlang/rust"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/rustlang/rust:latest".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("rust:nightly"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/library/rust:nightly".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("rust"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/library/rust:latest".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("library/rust"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/library/rust:latest".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("rust:obj@sha256:abcdef"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/library/rust:obj@sha256:abcdef".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("rust@sha256:abcdef"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/library/rust:latest@sha256:abcdef".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("rust:obj@abcdef"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/library/rust:obj@abcdef".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(
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ImageSource::new("b.gcr.io/test.example.com/my-app:test.example.com"),
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|op| {
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Op::Source(SourceOp {
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identifier: "docker-image://b.gcr.io/test.example.com/my-app:test.example.com"
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.into(),
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attrs: Default::default(),
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})
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}
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);
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crate::check_op!(
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ImageSource::new("sub-dom1.foo.com/bar/baz/quux:some-long-tag"),
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|op| {
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Op::Source(SourceOp {
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identifier: "docker-image://sub-dom1.foo.com/bar/baz/quux:some-long-tag".into(),
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attrs: Default::default(),
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})
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}
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);
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crate::check_op!(
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ImageSource::new("sub-dom1.foo.com/quux:some-long-tag"),
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|op| {
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Op::Source(SourceOp {
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identifier: "docker-image://sub-dom1.foo.com/quux:some-long-tag".into(),
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attrs: Default::default(),
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})
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}
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);
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crate::check_op!(ImageSource::new("localhost/rust:obj"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://localhost/rust:obj".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("127.0.0.1/rust:obj"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://127.0.0.1/rust:obj".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("localhost:5000/rust:obj"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://localhost:5000/rust:obj".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("127.0.0.1:5000/rust:obj"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://127.0.0.1:5000/rust:obj".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("localhost:5000/rust"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://localhost:5000/rust:latest".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("127.0.0.1:5000/rust"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://127.0.0.1:5000/rust:latest".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("docker.io/rust"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/library/rust:latest".into(),
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attrs: Default::default(),
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})
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});
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crate::check_op!(ImageSource::new("docker.io/library/rust"), |op| {
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Op::Source(SourceOp {
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identifier: "docker-image://docker.io/library/rust:latest".into(),
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attrs: Default::default(),
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})
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});
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}
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